With the pace of time, synthesis of nanomaterials has paved paths to blend two or more materials ... more With the pace of time, synthesis of nanomaterials has paved paths to blend two or more materials having different properties into hybrid nanoparticles. Therefore, it has become possible to combine two different functionalities in a single nanoparticle and their properties can be enhanced or modified by coupling of two different components. Core–shell technology has now represented a new trend in analytical sciences. Core–shell nanostructures are in demand due to their specific design and geometry. They have internal core of one component (metal or biomolecules) surrounded by a shell of another component. Core–shell nanoparticles have great importance due to their high thermal stability, high solubility and lower toxicity. In this review, recent progress in development of new and sophisticated core–shell nanostructures has been explored. The first section covers introduction throwing light on basics of core–shell nanoparticles. Following section classifies core–shell nanostructures into single core/shell, multicore/single shell, single core/multishell and multicore/multishell nanostructures. Next main section gives a brief description on types of core–shell nanomaterials followed by processes for the synthesis of core–shell nanostructures. Ultimately, the final section focuses on the application areas such as drug delivery, bioimaging, solar cell applications etc.
With the pace of time, synthesis of nanomaterials has paved paths to blend two or more materials ... more With the pace of time, synthesis of nanomaterials has paved paths to blend two or more materials having different properties into hybrid nanoparticles. Therefore, it has become possible to combine two different functionalities in a single nanoparticle and their properties can be enhanced or modified by coupling of two different components. Core–shell technology has now represented a new trend in analytical sciences. Core–shell nanostructures are in demand due to their specific design and geometry. They have internal core of one component (metal or biomolecules) surrounded by a shell of another component. Core–shell nanoparticles have great importance due to their high thermal stability, high solubility and lower toxicity. In this review, recent progress in development of new and sophisticated core–shell nanostructures has been explored. The first section covers introduction throwing light on basics of core–shell nanoparticles. Following section classifies core–shell nanostructures into single core/shell, multicore/single shell, single core/multishell and multicore/multishell nanostructures. Next main section gives a brief description on types of core–shell nanomaterials followed by processes for the synthesis of core–shell nanostructures. Ultimately, the final section focuses on the application areas such as drug delivery, bioimaging, solar cell applications etc.
Abstract With increasing trend in industrialization, heavy metals possess a great threat to the e... more Abstract With increasing trend in industrialization, heavy metals possess a great threat to the environment due to their discharge in water and wastewater above permissible limits. Heavy metals have toxic effects on human and environment. However, advancement in newly budding and fangled nanotechnology offers better treatment techniques. Development of novel and cost-effective 0D, 1D, 2D and 3D nanomaterials for environmental remediation, pollution detection and other applications has attracted considerable attention. Zero valent iron and iron oxide nanoparticles are found to be the best candidates for heavy metal adsorption and removal. Various mechanical, optical and electrical properties of nanoparticles play important role in nanoparticle formation and interaction. Forms of iron oxide such as hematite (α Fe2O3) and magnetite (Fe3O4) nanoparticles of varied morphology and size (10 nm, 20 nm, 50 nm etc.) were synthesized by various methods like sol-gel, precipitation, hydrothermal processes and magnetic nano-composites with different iron precursors (iron acetate, iron nitrate, ferric chloride, ferrous sulphate etc.). Iron oxide nanoparticles (in a variety of chemical and structural forms) have already exhibited its diversity and potential in many frontiers of environmental area. Present review is focused on the application of iron and iron oxide nanoparticles towards heavy metal removal.
Experimental and Modeling Process Optimization of Lead Adsorption on Magnetite Nanoparticles via Isothermal, Kinetics, and Thermodynamic Studies, 2020
Lead has been a burgeoning environmental pollutant used in industrial sectors. Therefore, to emph... more Lead has been a burgeoning environmental pollutant used in industrial sectors. Therefore, to emphasize the reactivity of lead toward magnetite nanoparticles for their removal, the present study was framed to analyze mechanisms involved in adsorption of lead. Batch adsorption studies have shown remarkable adsorption efficiency with only a 10 mg adsorbent dose used to extract 99% Pb 2+ (110 mg L −1) within 40 min at pH 6. Isothermal, kinetic, and thermodynamic studies were conducted, and the equilibrium data was best fit for the Langmuir isotherm model with a maximum of 41.66 mg g −1 adsorption capacity at 328 K. Moreover, a pseudo second order was followed for adsorption kinetics and thermodynamic parameters such as Gibbs energy (ΔG°), enthalpy (ΔH°), and entropy (ΔS°) that were calculated and revealed the spontaneous, feasible, and exothermic nature of the process.
With increasing trend in industrialization, heavy metals possess a great threat to the environmen... more With increasing trend in industrialization, heavy metals possess a great threat to the environment due to their discharge in water and wastewater above permissible limits. Heavy metals have toxic effects on human and environment. However, advancement in newly budding and fangled nanotechnology offers better treatment techniques. Development of novel and cost-effective 0D, 1D, 2D and 3D nanomaterials for environmental re-mediation, pollution detection and other applications has attracted considerable attention. Zero valent iron and iron oxide nanoparticles are found to be the best candidates for heavy metal adsorption and removal. Various mechanical, optical and electrical properties of nanoparticles play important role in nanoparticle formation and interaction. Forms of iron oxide such as hematite (α Fe 2 O 3) and magnetite (Fe 3 O 4) nanoparticles of varied morphology and size (10 nm, 20 nm, 50 nm etc.) were synthesized by various methods like sol-gel, precipitation, hydrothermal processes and magnetic nano-composites with different iron precursors (iron acetate, iron nitrate, ferric chloride, ferrous sulphate etc.). Iron oxide nanoparticles (in a variety of chemical and structural forms) have already exhibited its diversity and potential in many frontiers of environmental area. Present review is focused on the application of iron and iron oxide nanoparticles towards heavy metal removal.
With the pace of time, synthesis of nanomaterials has paved paths to blend two or more materials ... more With the pace of time, synthesis of nanomaterials has paved paths to blend two or more materials having different properties into hybrid nanoparticles. Therefore, it has become possible to combine two different functionalities in a single nanoparticle and their properties can be enhanced or modified by coupling of two different components. Core–shell technology has now represented a new trend in analytical sciences. Core–shell nanostructures are in demand due to their specific design and geometry. They have internal core of one component (metal or biomolecules) surrounded by a shell of another component. Core–shell nanoparticles have great importance due to their high thermal stability, high solubility and lower toxicity. In this review, recent progress in development of new and sophisticated core–shell nanostructures has been explored. The first section covers introduction throwing light on basics of core–shell nanoparticles. Following section classifies core–shell nanostructures into single core/shell, multicore/single shell, single core/multishell and multicore/multishell nanostructures. Next main section gives a brief description on types of core–shell nanomaterials followed by processes for the synthesis of core–shell nanostructures. Ultimately, the final section focuses on the application areas such as drug delivery, bioimaging, solar cell applications etc.
With the pace of time, synthesis of nanomaterials has paved paths to blend two or more materials ... more With the pace of time, synthesis of nanomaterials has paved paths to blend two or more materials having different properties into hybrid nanoparticles. Therefore, it has become possible to combine two different functionalities in a single nanoparticle and their properties can be enhanced or modified by coupling of two different components. Core–shell technology has now represented a new trend in analytical sciences. Core–shell nanostructures are in demand due to their specific design and geometry. They have internal core of one component (metal or biomolecules) surrounded by a shell of another component. Core–shell nanoparticles have great importance due to their high thermal stability, high solubility and lower toxicity. In this review, recent progress in development of new and sophisticated core–shell nanostructures has been explored. The first section covers introduction throwing light on basics of core–shell nanoparticles. Following section classifies core–shell nanostructures into single core/shell, multicore/single shell, single core/multishell and multicore/multishell nanostructures. Next main section gives a brief description on types of core–shell nanomaterials followed by processes for the synthesis of core–shell nanostructures. Ultimately, the final section focuses on the application areas such as drug delivery, bioimaging, solar cell applications etc.
Abstract With increasing trend in industrialization, heavy metals possess a great threat to the e... more Abstract With increasing trend in industrialization, heavy metals possess a great threat to the environment due to their discharge in water and wastewater above permissible limits. Heavy metals have toxic effects on human and environment. However, advancement in newly budding and fangled nanotechnology offers better treatment techniques. Development of novel and cost-effective 0D, 1D, 2D and 3D nanomaterials for environmental remediation, pollution detection and other applications has attracted considerable attention. Zero valent iron and iron oxide nanoparticles are found to be the best candidates for heavy metal adsorption and removal. Various mechanical, optical and electrical properties of nanoparticles play important role in nanoparticle formation and interaction. Forms of iron oxide such as hematite (α Fe2O3) and magnetite (Fe3O4) nanoparticles of varied morphology and size (10 nm, 20 nm, 50 nm etc.) were synthesized by various methods like sol-gel, precipitation, hydrothermal processes and magnetic nano-composites with different iron precursors (iron acetate, iron nitrate, ferric chloride, ferrous sulphate etc.). Iron oxide nanoparticles (in a variety of chemical and structural forms) have already exhibited its diversity and potential in many frontiers of environmental area. Present review is focused on the application of iron and iron oxide nanoparticles towards heavy metal removal.
Experimental and Modeling Process Optimization of Lead Adsorption on Magnetite Nanoparticles via Isothermal, Kinetics, and Thermodynamic Studies, 2020
Lead has been a burgeoning environmental pollutant used in industrial sectors. Therefore, to emph... more Lead has been a burgeoning environmental pollutant used in industrial sectors. Therefore, to emphasize the reactivity of lead toward magnetite nanoparticles for their removal, the present study was framed to analyze mechanisms involved in adsorption of lead. Batch adsorption studies have shown remarkable adsorption efficiency with only a 10 mg adsorbent dose used to extract 99% Pb 2+ (110 mg L −1) within 40 min at pH 6. Isothermal, kinetic, and thermodynamic studies were conducted, and the equilibrium data was best fit for the Langmuir isotherm model with a maximum of 41.66 mg g −1 adsorption capacity at 328 K. Moreover, a pseudo second order was followed for adsorption kinetics and thermodynamic parameters such as Gibbs energy (ΔG°), enthalpy (ΔH°), and entropy (ΔS°) that were calculated and revealed the spontaneous, feasible, and exothermic nature of the process.
With increasing trend in industrialization, heavy metals possess a great threat to the environmen... more With increasing trend in industrialization, heavy metals possess a great threat to the environment due to their discharge in water and wastewater above permissible limits. Heavy metals have toxic effects on human and environment. However, advancement in newly budding and fangled nanotechnology offers better treatment techniques. Development of novel and cost-effective 0D, 1D, 2D and 3D nanomaterials for environmental re-mediation, pollution detection and other applications has attracted considerable attention. Zero valent iron and iron oxide nanoparticles are found to be the best candidates for heavy metal adsorption and removal. Various mechanical, optical and electrical properties of nanoparticles play important role in nanoparticle formation and interaction. Forms of iron oxide such as hematite (α Fe 2 O 3) and magnetite (Fe 3 O 4) nanoparticles of varied morphology and size (10 nm, 20 nm, 50 nm etc.) were synthesized by various methods like sol-gel, precipitation, hydrothermal processes and magnetic nano-composites with different iron precursors (iron acetate, iron nitrate, ferric chloride, ferrous sulphate etc.). Iron oxide nanoparticles (in a variety of chemical and structural forms) have already exhibited its diversity and potential in many frontiers of environmental area. Present review is focused on the application of iron and iron oxide nanoparticles towards heavy metal removal.
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