SUMMARY:A value driven and highly competent R&D professional having 1 year industrial experience ... more SUMMARY:A value driven and highly competent R&D professional having 1 year industrial experience as chemist in a US based MNC, SC Johnson Products Pvt. Ltd., Delhi and 3.5+ years of postdoctoral experience in catalysis and catalyst development. Currently associated with FITT & Department of Chemical Engineering, IIT Delhi as Project Scientist and working in the area of heterogeneous catalysis. Expertise in heterogeneous and homogeneous catalysis Proficient in Ionic liquid, metal oxide, metal phosphate and carbon based catalyst synthesis and characterization (by FT-IR, XRD, TEM, SEM, TGA) Well versed in chromatographic (HPLC, GC, GC-MS) and spectroscopic (IR, NMR, UV-Vis) characterization techniques Experience of close collaboration with computational chemists, both for understanding and verification of chemical phenomena Skilled at planning experiments and analyzing/interpreting the results Experienced in Density functional theory (DFT) and ab initio calculations Demonstrated high performance standards with astute attention to details and deadlines. Worked well in diverse teams to achieve goals through effective communication and interpersonal skills Strong ability to master a situation quickly; highly knowledgeable in a wide variety of professional disciplines and an expert at organizing and directing turnaround situations Possessing excellent communication and collaboration skills to lead and work in concert with diverse groups effectively. Dedicated and highly ambitious to achieve personal as well as the organizational goals
Partially saturated 2-pyrone molecules undergo ring-opening and decarboxylation via retro-Diels–A... more Partially saturated 2-pyrone molecules undergo ring-opening and decarboxylation via retro-Diels–Alder (rDA) reaction. Density functional theory (DFT) simulations were utilized to calculate the intrinsic activation barrier and reaction energies of the steps involved in rDA reaction of biomass-derived 5,6-dihydro-4-hydroxy-6-methylpyran-2-one (5DHHMP), 4-hydroxy-3,6-dimethyl-pyran-2-one (4HDMP) and 4-hydroxy-6-(2-oxo-propyl)-3,6-dihydro-pyran-2-one (4HOPP). The rDA reaction of the three molecules in water proceeds in two steps via the formation of a zwitterionic intermediate. The calculated activation barrier (E a ¼ 61 kJ mol À1) for the rDA reaction of 5DHHMP in water compares well with the experimentally measured value. In the absence of hydrogen bonding interactions such as in the solvent n-hexane and gas-phase, the rDA reaction is concerted and activation barriers of the three molecules were estimated to be relatively higher. Substituents at C 6 , C 4 and C 3 position in partially saturated 2-pyrones showed a clear effect on the reactivity of the molecules which was correlated back to the resultant normal electron demand frontier molecular orbital (FMO) gap of the product diene and dienophile. The electronic and geometric (steric) effects of the substituents were separated by including several other structurally similar molecules having variations in the position, type and number of substituents. In general, the electronic effect of the substituents follow a linear trend, where FMO gap for normal electron demand serves as a good descriptor of the reactivity. The geometric effect was represented on a linear scale to quantify the steric hindrance offered by the methyl substituents. Molecules having no hydroxyl substituent at C 4 such as 6-methyl-3,6-dihydro-2H-pyran-2-one (4HMTHP) and 4,6,6-trimethyl-3,6-dihydro-2H-pyran-2-one (DTMP) showed a concerted route for rDA reaction in water without the formation of the intermediate. The rates of rDA reaction of the molecules were observed to be accelerated in water as compared to n-hexane. In solvents, the reactivity of the molecule doesn't correlate to the FMO gap of the products, likely due to the differential stabilization of the reactant and transition state. In general, polar solvents (water, DMSO, ethanol and methanol) were calculated to show lesser activation energy despite of a greater FMO gap as compared to non-polar solvents (n-hexane). In a solvent, the rDA reaction of the molecules follows a Brønsted–Evans–Polanyi (BEP) relationship. In presence of a Brønsted acid catalyst the rDA reaction of 5DHHMP proceeds via the formation of an oxocarbenium ion which further helps in facilitating the reaction with a significantly reduced activation barrier (E a ¼ 15 kJ mol À1).
Nanohexaconazole is a highly efficient fungicide against Rhizoctonia solani. Nanoparticles are al... more Nanohexaconazole is a highly efficient fungicide against Rhizoctonia solani. Nanoparticles are alleged to adversely affect the non-target organisms. In order to evaluate such concern, the present study was carried out to investigate the effect of nanohexaconazole and its commercial formulation on sensitive nitrogen fixing blue green algae (BGA) and bacteria. Various activities of algae and bacteria namely growth, N-fixation, N-assimilation, Indole acetic acid (IAA) production and phosphate solubilization were differently affected in the presence of hexaconazole. Although, there was stimulatory to slightly inhibitory effect on the growth measurable parameters of the organisms studied at the recommended dose of nanohexaconazole, but its higher dose was inhibitory to all these microorganisms. On the other hand, the recommended as well as higher dose of commercial hex-aconazole showed much severe inhibition of growth and metabolic activity of these organisms as compared to the nano preparation. The uses of nanohexazconazole instead of hexaconazole as a fungicide will not only help to control various fungal pathogens but also sustain the growth and activity of these beneficial microorganisms for sustaining soil fertility and productivity.
Partially saturated 2-pyrone molecules undergo ring-opening and decarboxylation via retro-Diels–A... more Partially saturated 2-pyrone molecules undergo ring-opening and decarboxylation via retro-Diels–Alder (rDA) reaction. Density functional theory (DFT) simulations were utilized to calculate the intrinsic activation barrier and reaction energies of the steps involved in rDA reaction of biomass-derived 5,6-dihydro-4-hydroxy-6-methylpyran-2-one (5DHHMP), 4-hydroxy-3,6-dimethyl-pyran-2-one (4HDMP) and 4-hydroxy-6-(2-oxo-propyl)-3,6-dihydro-pyran-2-one (4HOPP). The rDA reaction of the three molecules in water proceeds in two steps via the formation of a zwitterionic intermediate. The calculated activation barrier (E a ¼ 61 kJ mol À1) for the rDA reaction of 5DHHMP in water compares well with the experimentally measured value. In the absence of hydrogen bonding interactions such as in the solvent n-hexane and gas-phase, the rDA reaction is concerted and activation barriers of the three molecules were estimated to be relatively higher. Substituents at C 6 , C 4 and C 3 position in partially saturated 2-pyrones showed a clear effect on the reactivity of the molecules which was correlated back to the resultant normal electron demand frontier molecular orbital (FMO) gap of the product diene and dienophile. The electronic and geometric (steric) effects of the substituents were separated by including several other structurally similar molecules having variations in the position, type and number of substituents. In general, the electronic effect of the substituents follow a linear trend, where FMO gap for normal electron demand serves as a good descriptor of the reactivity. The geometric effect was represented on a linear scale to quantify the steric hindrance offered by the methyl substituents. Molecules having no hydroxyl substituent at C 4 such as 6-methyl-3,6-dihydro-2H-pyran-2-one (4HMTHP) and 4,6,6-trimethyl-3,6-dihydro-2H-pyran-2-one (DTMP) showed a concerted route for rDA reaction in water without the formation of the intermediate. The rates of rDA reaction of the molecules were observed to be accelerated in water as compared to n-hexane. In solvents, the reactivity of the molecule doesn't correlate to the FMO gap of the products, likely due to the differential stabilization of the reactant and transition state. In general, polar solvents (water, DMSO, ethanol and methanol) were calculated to show lesser activation energy despite of a greater FMO gap as compared to non-polar solvents (n-hexane). In a solvent, the rDA reaction of the molecules follows a Brønsted–Evans–Polanyi (BEP) relationship. In presence of a Brønsted acid catalyst the rDA reaction of 5DHHMP proceeds via the formation of an oxocarbenium ion which further helps in facilitating the reaction with a significantly reduced activation barrier (E a ¼ 15 kJ mol À1).
The importance of ethyl levulinate (EL) as a fuel additive and a potential biomass-derived platfo... more The importance of ethyl levulinate (EL) as a fuel additive and a potential biomass-derived platform molecule is noteworthy. EL is obtained from the esterification of levulinic acid (LA) in the presence of ethanol. Besides LA, the acid-catalyzed ethanolysis reaction to produce EL can be carried out on a variety of biomass-derived substrates including furfuryl alcohol (FAL), chloromethyl furfural, monosaccharides, polysaccharides and lignocellulosic biomass. The acid catalysts employed for such conversions cover a wide range of structure and properties. The nature of the acid catalysts and the key intermediates formed during the reaction dictate the overall yield of the desired product. For example, in the ethanolysis reaction of FAL to produce EL, diethyl ether (DEE) and ethoxymethylfuran (EMF) produced as side products are suggested to influence the selectivity of EL. Similarly, in the ethanolysis of glucose, formation of ethyl-D-glucopyranoside (EDGP) results in a slow conversion to product EL. The review, therefore, focuses on highlighting the importance of catalyst structure, acidity and reaction mechanism and the role of key intermediates in the production of EL from biorenewable resources.
We have recently reported the development of nano-
sulphur with remarkable fungicidal ... more We have recently reported the development of nano- sulphur with remarkable fungicidal properties, much better than the conventional sulphur. The nanosulphur could substitute the toxic conventional synthetic fun- gicides. The lack of estimation protocols for active ingredient in nanoformulations and exploitation of nanosulphur as a new technology for fungal manage- ment necessitates the need for estimation protocols to ensure the quality and quantity of sulphur in nano- formulations. Therefore, a method was developed for the estimation of sulphur in its nanoformulations using UV–visible spectrophotometry. Thirty-four samples of nanosulphur were analysed to validate the method. The percentage estimation of the active in- gredient in all the samples was above 80.
The study was aimed to develop a nano form of an existing fungicide for improving plant protectio... more The study was aimed to develop a nano form of an existing fungicide for improving plant protection and reducing crop losses caused by fungal pathogens. The protocol for the preparation and estimation of nanohexaconazole was developed. Technically pure hexaconazole was converted into its nanoform using polyethyleneglycol-400 (PEG) as the surface stabilizing agent. Nanohexaconazole was characterized using Scanning Electron Microscopy (SEM) and Dynamic Light Scattering (DLS) studies. The average particle size of nanohexaconazole was about 100 nm. An analytical method was also developed for quality control of the nanofungicide by GLC fitted with flame ionization detector. Its limit of detection was 2.5 ppm. Fungicidal potential of nanohexaconazole was better in comparison to that of conventional hexaconazole. Hydrolytic and thermal stability studies confirmed its stability at par with the conventional formulation of fungicide. Impact of nanohexaconazole on soil nitrifiers was tested in vitro and there were no significant adverse effect in their numbers observed as compared to conventional registered formulation, proving the safety of the nanofungicide.
Dual Brønsted and Lewis acidity of solid acid catalysts enhances selective production of 5-hydrox... more Dual Brønsted and Lewis acidity of solid acid catalysts enhances selective production of 5-hydroxymethylfurfural (HMF). This report describes a simple template-free synthetic approach for thepreparation of titanium hydrogenphosphate (TiHP) material containing Lewis and Brønsted acid sites.As-synthesized material has been thoroughly analyzed by several analytical methods for elucidating itsstructural properties, including determination of the presence of Brønsted acidic phosphate group andmeasurement of total acid density. NH3-TPD data reveals high surface acidity (1.43 mmol g−1) of theTiHP, which is indeed reflects to its catalytic effectiveness for the conversion of fructose, giving 55% HMFin biphasic solvent. Glucose conversion gives better yield (35%) when the reaction was carried out ina larger reactor (2 L Parr reactor), which might be due to better mechanical stirring and hence highermixing efficiency of the reactants. Brønsted acid sites in the catalyst facilitated the formation of furanring opening product, levulinic acid, at higher temperatures. The catalyst shows excellent recyclabilityand the recovered catalyst after the 3rd cycles retained XRD and TGA characteristics.
We have recently reported the development of nanosulphur with remarkable fungicidal properties, m... more We have recently reported the development of nanosulphur with remarkable fungicidal properties, much better than the conventional sulphur. The nanosulphur could substitute the toxic conventional synthetic fungicides. The lack of estimation protocols for active ingredient in nanoformulations and exploitation of nanosulphur as a new technology for fungal management necessitates the need for estimation protocols to
ensure the quality and quantity of sulphur in nanoformulations. Therefore, a method was developed for the estimation of sulphur in its nanoformulations using UV–visible spectrophotometry. Thirty-four samples of nanosulphur were analysed to validate the
method. The percentage estimation of the active ingredient in all the samples was above 80.
Direct transformation of cellulose and sugarcane bagasse into 5-hydroxymethylfurfural (HMF) was c... more Direct transformation of cellulose and sugarcane bagasse into 5-hydroxymethylfurfural (HMF) was carried out using single or combined metal chloride catalysts in DMA–LiCl solvent under microwave-assisted heating. Among several metal chloride catalysts ...
SUMMARY:A value driven and highly competent R&D professional having 1 year industrial experience ... more SUMMARY:A value driven and highly competent R&D professional having 1 year industrial experience as chemist in a US based MNC, SC Johnson Products Pvt. Ltd., Delhi and 3.5+ years of postdoctoral experience in catalysis and catalyst development. Currently associated with FITT & Department of Chemical Engineering, IIT Delhi as Project Scientist and working in the area of heterogeneous catalysis. Expertise in heterogeneous and homogeneous catalysis Proficient in Ionic liquid, metal oxide, metal phosphate and carbon based catalyst synthesis and characterization (by FT-IR, XRD, TEM, SEM, TGA) Well versed in chromatographic (HPLC, GC, GC-MS) and spectroscopic (IR, NMR, UV-Vis) characterization techniques Experience of close collaboration with computational chemists, both for understanding and verification of chemical phenomena Skilled at planning experiments and analyzing/interpreting the results Experienced in Density functional theory (DFT) and ab initio calculations Demonstrated high performance standards with astute attention to details and deadlines. Worked well in diverse teams to achieve goals through effective communication and interpersonal skills Strong ability to master a situation quickly; highly knowledgeable in a wide variety of professional disciplines and an expert at organizing and directing turnaround situations Possessing excellent communication and collaboration skills to lead and work in concert with diverse groups effectively. Dedicated and highly ambitious to achieve personal as well as the organizational goals
Partially saturated 2-pyrone molecules undergo ring-opening and decarboxylation via retro-Diels–A... more Partially saturated 2-pyrone molecules undergo ring-opening and decarboxylation via retro-Diels–Alder (rDA) reaction. Density functional theory (DFT) simulations were utilized to calculate the intrinsic activation barrier and reaction energies of the steps involved in rDA reaction of biomass-derived 5,6-dihydro-4-hydroxy-6-methylpyran-2-one (5DHHMP), 4-hydroxy-3,6-dimethyl-pyran-2-one (4HDMP) and 4-hydroxy-6-(2-oxo-propyl)-3,6-dihydro-pyran-2-one (4HOPP). The rDA reaction of the three molecules in water proceeds in two steps via the formation of a zwitterionic intermediate. The calculated activation barrier (E a ¼ 61 kJ mol À1) for the rDA reaction of 5DHHMP in water compares well with the experimentally measured value. In the absence of hydrogen bonding interactions such as in the solvent n-hexane and gas-phase, the rDA reaction is concerted and activation barriers of the three molecules were estimated to be relatively higher. Substituents at C 6 , C 4 and C 3 position in partially saturated 2-pyrones showed a clear effect on the reactivity of the molecules which was correlated back to the resultant normal electron demand frontier molecular orbital (FMO) gap of the product diene and dienophile. The electronic and geometric (steric) effects of the substituents were separated by including several other structurally similar molecules having variations in the position, type and number of substituents. In general, the electronic effect of the substituents follow a linear trend, where FMO gap for normal electron demand serves as a good descriptor of the reactivity. The geometric effect was represented on a linear scale to quantify the steric hindrance offered by the methyl substituents. Molecules having no hydroxyl substituent at C 4 such as 6-methyl-3,6-dihydro-2H-pyran-2-one (4HMTHP) and 4,6,6-trimethyl-3,6-dihydro-2H-pyran-2-one (DTMP) showed a concerted route for rDA reaction in water without the formation of the intermediate. The rates of rDA reaction of the molecules were observed to be accelerated in water as compared to n-hexane. In solvents, the reactivity of the molecule doesn't correlate to the FMO gap of the products, likely due to the differential stabilization of the reactant and transition state. In general, polar solvents (water, DMSO, ethanol and methanol) were calculated to show lesser activation energy despite of a greater FMO gap as compared to non-polar solvents (n-hexane). In a solvent, the rDA reaction of the molecules follows a Brønsted–Evans–Polanyi (BEP) relationship. In presence of a Brønsted acid catalyst the rDA reaction of 5DHHMP proceeds via the formation of an oxocarbenium ion which further helps in facilitating the reaction with a significantly reduced activation barrier (E a ¼ 15 kJ mol À1).
Nanohexaconazole is a highly efficient fungicide against Rhizoctonia solani. Nanoparticles are al... more Nanohexaconazole is a highly efficient fungicide against Rhizoctonia solani. Nanoparticles are alleged to adversely affect the non-target organisms. In order to evaluate such concern, the present study was carried out to investigate the effect of nanohexaconazole and its commercial formulation on sensitive nitrogen fixing blue green algae (BGA) and bacteria. Various activities of algae and bacteria namely growth, N-fixation, N-assimilation, Indole acetic acid (IAA) production and phosphate solubilization were differently affected in the presence of hexaconazole. Although, there was stimulatory to slightly inhibitory effect on the growth measurable parameters of the organisms studied at the recommended dose of nanohexaconazole, but its higher dose was inhibitory to all these microorganisms. On the other hand, the recommended as well as higher dose of commercial hex-aconazole showed much severe inhibition of growth and metabolic activity of these organisms as compared to the nano preparation. The uses of nanohexazconazole instead of hexaconazole as a fungicide will not only help to control various fungal pathogens but also sustain the growth and activity of these beneficial microorganisms for sustaining soil fertility and productivity.
Partially saturated 2-pyrone molecules undergo ring-opening and decarboxylation via retro-Diels–A... more Partially saturated 2-pyrone molecules undergo ring-opening and decarboxylation via retro-Diels–Alder (rDA) reaction. Density functional theory (DFT) simulations were utilized to calculate the intrinsic activation barrier and reaction energies of the steps involved in rDA reaction of biomass-derived 5,6-dihydro-4-hydroxy-6-methylpyran-2-one (5DHHMP), 4-hydroxy-3,6-dimethyl-pyran-2-one (4HDMP) and 4-hydroxy-6-(2-oxo-propyl)-3,6-dihydro-pyran-2-one (4HOPP). The rDA reaction of the three molecules in water proceeds in two steps via the formation of a zwitterionic intermediate. The calculated activation barrier (E a ¼ 61 kJ mol À1) for the rDA reaction of 5DHHMP in water compares well with the experimentally measured value. In the absence of hydrogen bonding interactions such as in the solvent n-hexane and gas-phase, the rDA reaction is concerted and activation barriers of the three molecules were estimated to be relatively higher. Substituents at C 6 , C 4 and C 3 position in partially saturated 2-pyrones showed a clear effect on the reactivity of the molecules which was correlated back to the resultant normal electron demand frontier molecular orbital (FMO) gap of the product diene and dienophile. The electronic and geometric (steric) effects of the substituents were separated by including several other structurally similar molecules having variations in the position, type and number of substituents. In general, the electronic effect of the substituents follow a linear trend, where FMO gap for normal electron demand serves as a good descriptor of the reactivity. The geometric effect was represented on a linear scale to quantify the steric hindrance offered by the methyl substituents. Molecules having no hydroxyl substituent at C 4 such as 6-methyl-3,6-dihydro-2H-pyran-2-one (4HMTHP) and 4,6,6-trimethyl-3,6-dihydro-2H-pyran-2-one (DTMP) showed a concerted route for rDA reaction in water without the formation of the intermediate. The rates of rDA reaction of the molecules were observed to be accelerated in water as compared to n-hexane. In solvents, the reactivity of the molecule doesn't correlate to the FMO gap of the products, likely due to the differential stabilization of the reactant and transition state. In general, polar solvents (water, DMSO, ethanol and methanol) were calculated to show lesser activation energy despite of a greater FMO gap as compared to non-polar solvents (n-hexane). In a solvent, the rDA reaction of the molecules follows a Brønsted–Evans–Polanyi (BEP) relationship. In presence of a Brønsted acid catalyst the rDA reaction of 5DHHMP proceeds via the formation of an oxocarbenium ion which further helps in facilitating the reaction with a significantly reduced activation barrier (E a ¼ 15 kJ mol À1).
The importance of ethyl levulinate (EL) as a fuel additive and a potential biomass-derived platfo... more The importance of ethyl levulinate (EL) as a fuel additive and a potential biomass-derived platform molecule is noteworthy. EL is obtained from the esterification of levulinic acid (LA) in the presence of ethanol. Besides LA, the acid-catalyzed ethanolysis reaction to produce EL can be carried out on a variety of biomass-derived substrates including furfuryl alcohol (FAL), chloromethyl furfural, monosaccharides, polysaccharides and lignocellulosic biomass. The acid catalysts employed for such conversions cover a wide range of structure and properties. The nature of the acid catalysts and the key intermediates formed during the reaction dictate the overall yield of the desired product. For example, in the ethanolysis reaction of FAL to produce EL, diethyl ether (DEE) and ethoxymethylfuran (EMF) produced as side products are suggested to influence the selectivity of EL. Similarly, in the ethanolysis of glucose, formation of ethyl-D-glucopyranoside (EDGP) results in a slow conversion to product EL. The review, therefore, focuses on highlighting the importance of catalyst structure, acidity and reaction mechanism and the role of key intermediates in the production of EL from biorenewable resources.
We have recently reported the development of nano-
sulphur with remarkable fungicidal ... more We have recently reported the development of nano- sulphur with remarkable fungicidal properties, much better than the conventional sulphur. The nanosulphur could substitute the toxic conventional synthetic fun- gicides. The lack of estimation protocols for active ingredient in nanoformulations and exploitation of nanosulphur as a new technology for fungal manage- ment necessitates the need for estimation protocols to ensure the quality and quantity of sulphur in nano- formulations. Therefore, a method was developed for the estimation of sulphur in its nanoformulations using UV–visible spectrophotometry. Thirty-four samples of nanosulphur were analysed to validate the method. The percentage estimation of the active in- gredient in all the samples was above 80.
The study was aimed to develop a nano form of an existing fungicide for improving plant protectio... more The study was aimed to develop a nano form of an existing fungicide for improving plant protection and reducing crop losses caused by fungal pathogens. The protocol for the preparation and estimation of nanohexaconazole was developed. Technically pure hexaconazole was converted into its nanoform using polyethyleneglycol-400 (PEG) as the surface stabilizing agent. Nanohexaconazole was characterized using Scanning Electron Microscopy (SEM) and Dynamic Light Scattering (DLS) studies. The average particle size of nanohexaconazole was about 100 nm. An analytical method was also developed for quality control of the nanofungicide by GLC fitted with flame ionization detector. Its limit of detection was 2.5 ppm. Fungicidal potential of nanohexaconazole was better in comparison to that of conventional hexaconazole. Hydrolytic and thermal stability studies confirmed its stability at par with the conventional formulation of fungicide. Impact of nanohexaconazole on soil nitrifiers was tested in vitro and there were no significant adverse effect in their numbers observed as compared to conventional registered formulation, proving the safety of the nanofungicide.
Dual Brønsted and Lewis acidity of solid acid catalysts enhances selective production of 5-hydrox... more Dual Brønsted and Lewis acidity of solid acid catalysts enhances selective production of 5-hydroxymethylfurfural (HMF). This report describes a simple template-free synthetic approach for thepreparation of titanium hydrogenphosphate (TiHP) material containing Lewis and Brønsted acid sites.As-synthesized material has been thoroughly analyzed by several analytical methods for elucidating itsstructural properties, including determination of the presence of Brønsted acidic phosphate group andmeasurement of total acid density. NH3-TPD data reveals high surface acidity (1.43 mmol g−1) of theTiHP, which is indeed reflects to its catalytic effectiveness for the conversion of fructose, giving 55% HMFin biphasic solvent. Glucose conversion gives better yield (35%) when the reaction was carried out ina larger reactor (2 L Parr reactor), which might be due to better mechanical stirring and hence highermixing efficiency of the reactants. Brønsted acid sites in the catalyst facilitated the formation of furanring opening product, levulinic acid, at higher temperatures. The catalyst shows excellent recyclabilityand the recovered catalyst after the 3rd cycles retained XRD and TGA characteristics.
We have recently reported the development of nanosulphur with remarkable fungicidal properties, m... more We have recently reported the development of nanosulphur with remarkable fungicidal properties, much better than the conventional sulphur. The nanosulphur could substitute the toxic conventional synthetic fungicides. The lack of estimation protocols for active ingredient in nanoformulations and exploitation of nanosulphur as a new technology for fungal management necessitates the need for estimation protocols to
ensure the quality and quantity of sulphur in nanoformulations. Therefore, a method was developed for the estimation of sulphur in its nanoformulations using UV–visible spectrophotometry. Thirty-four samples of nanosulphur were analysed to validate the
method. The percentage estimation of the active ingredient in all the samples was above 80.
Direct transformation of cellulose and sugarcane bagasse into 5-hydroxymethylfurfural (HMF) was c... more Direct transformation of cellulose and sugarcane bagasse into 5-hydroxymethylfurfural (HMF) was carried out using single or combined metal chloride catalysts in DMA–LiCl solvent under microwave-assisted heating. Among several metal chloride catalysts ...
Uploads
sulphur with remarkable fungicidal properties, much
better than the conventional sulphur. The nanosulphur
could substitute the toxic conventional synthetic fun-
gicides. The lack of estimation protocols for active
ingredient in nanoformulations and exploitation of
nanosulphur as a new technology for fungal manage-
ment necessitates the need for estimation protocols to
ensure the quality and quantity of sulphur in nano-
formulations. Therefore, a method was developed for
the estimation of sulphur in its nanoformulations
using UV–visible spectrophotometry. Thirty-four
samples of nanosulphur were analysed to validate the
method. The percentage estimation of the active in-
gredient in all the samples was above 80.
ensure the quality and quantity of sulphur in nanoformulations. Therefore, a method was developed for the estimation of sulphur in its nanoformulations using UV–visible spectrophotometry. Thirty-four samples of nanosulphur were analysed to validate the
method. The percentage estimation of the active ingredient in all the samples was above 80.
sulphur with remarkable fungicidal properties, much
better than the conventional sulphur. The nanosulphur
could substitute the toxic conventional synthetic fun-
gicides. The lack of estimation protocols for active
ingredient in nanoformulations and exploitation of
nanosulphur as a new technology for fungal manage-
ment necessitates the need for estimation protocols to
ensure the quality and quantity of sulphur in nano-
formulations. Therefore, a method was developed for
the estimation of sulphur in its nanoformulations
using UV–visible spectrophotometry. Thirty-four
samples of nanosulphur were analysed to validate the
method. The percentage estimation of the active in-
gredient in all the samples was above 80.
ensure the quality and quantity of sulphur in nanoformulations. Therefore, a method was developed for the estimation of sulphur in its nanoformulations using UV–visible spectrophotometry. Thirty-four samples of nanosulphur were analysed to validate the
method. The percentage estimation of the active ingredient in all the samples was above 80.