High‐purity hydrogen produced by water splitting is considered as one of the most promising fuels... more High‐purity hydrogen produced by water splitting is considered as one of the most promising fuels to replace traditional fossil fuels. Developing highly efficient electrocatalysts toward hydrogen evolution is vital for the realization of large‐scale H2 generation. Glycerol is used herein in a facile solvothermal process to synthesize edge‐rich ultrathin MoS2/reduced graphene oxide (RGO) composites. The introduction of glycerol plays an important role in the formation of such interesting structures. The MoS2/RGO electrocatalyst exhibits excellent hydrogen evolution reaction (HER) activity and remarkable stability, owing to the rich active edges and improved electrical conductivity of the catalyst composites. This work provides new insights to engineer the structures of MoSx‐based composites and thus achieves more active and efficient electrocatalysts.
In this study, Pseudosperma arenarium is proposed as a new species, based on morphological, ecolo... more In this study, Pseudosperma arenarium is proposed as a new species, based on morphological, ecological, molecular and biochemical evidence. The new species grows on sandy ground under Populus and Pinus sylvestris in north-western China and northern Europe, respectively. It is characterised by the combination of the robust habit, nearly glabrous pileus, large cylindrical basidiospores, thin-walled cheilocystidia and ecological associations with Populus alba × P. berolinensis and Pinus sylvestris and unique phylogenetic placement. Additionally, a comprehensive toxin determination of the new species using ultra-high performance liquid chromatography-tandem mass spectrometry was conducted. Results showed that it was a muscarine-positive species. The content were approximately five times higher in the pilei [4012.2 ± 803.1–4302.3 ± 863.2 mg/kg (k = 2, p = 95%)] than in the stipes [850.4 ± 171.1–929.1 ± 184.2 mg/kg (k = 2, p = 95%)], demonstrating the severity of mushroom poisoning when p...
Controllable synthesis of multidimensional carboxylic acid-based NiFe MOFs is realized by a simpl... more Controllable synthesis of multidimensional carboxylic acid-based NiFe MOFs is realized by a simple solvent-assisted strategy as efficient electrocatalysts for oxygen evolution.
Hydrazine fuel cells are promising sustainable power sources. However, the high price and limited... more Hydrazine fuel cells are promising sustainable power sources. However, the high price and limited reserves of noble metal catalysts that promote the sluggish cathodic and anodic electrochemical reactions hinder their practical applications. Reflecting the enhanced diffusion and improved kinetics of nanostructured non-noble metal electrocatalysts, we report an efficient zeolitic-imidazole framework-derived trifunctional electrocatalyst for hydrazine oxidation, oxygen, and hydrogen peroxide reduction. Experimental results and theoretical calculations corroborate that the nanocarbon architecture with abundant Co-N species enhances the electronic interaction and optimizes the energy barriers of anodic hydrazine oxidation and cathodic oxygen reduction. The resulting assembled hydrazine-oxygen fuel cell yields a cell voltage and power density of 0.74 V and 20.5 mW cm-2, respectively. Moreover, benefiting from the liquid-liquid diffusion, the hydrazine-hydrogen peroxide cell shows a boosted cell voltage and power density, corresponding to 1.68 V and 41.0 mW cm-2. This work offers a highly active non-noble metal multifunctional electrocatalyst with a pioneering diffusion philosophy in the liquid electrochemical cells.
The development of highly efficient non-precious metal catalysts for oxygen evolution reaction (O... more The development of highly efficient non-precious metal catalysts for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is key for large-scale hydrogen evolution through water splitting technology. Here, we report an air-stable Cu-based nanostructure consisting of Mn doped CuCl and CuO (CuCl/CuO(Mn)-NF) as a dual functional electrocatalyst for water splitting. CuCl is identified as the main active component, together with Mn doping and the synergistic effect between CuCl and CuO are found to make responsibility for the excellent OER and HER catalytic activity and stability. The assembled electrolyzes also exhibit decent water splitting performance. This work not only provides a simple method for preparing Cu-based composite catalyst, but also demonstrates the great potential of Cu-based non-noble metal electrocatalysts for water splitting and other renewable energy conversion technologies.
Rendiconti del Circolo Matematico di Palermo, 2004
Main results: The normal structure coefficients of the Orlicz Sequence spacesl Ф generated by the... more Main results: The normal structure coefficients of the Orlicz Sequence spacesl Ф generated by theN-function Φ equipped with Luxemburg and Orlicz norm have the exact value: (i) IfF Ф(t)=tϕ(t)/Φ(t) is decreasing,C Ф 0 >2, then $$N(l^{(\Phi )} ) = N(l^\Phi ) = 2^{C_\Phi ^{\mathop 0\limits^{\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{1} } } } $$ ; (ii) IfF qФ(t) is increasing, 1C Ф 0 $$N(l^{(\Phi )}
This review provides a focused overview on advanced metal/covalent–organic framework-based materi... more This review provides a focused overview on advanced metal/covalent–organic framework-based materials as electrocatalysts for efficient water splitting.
Asian Pacific journal of allergy and immunology, Jan 8, 2018
The worldwide prevalence of allergic diseases has increased during the last few decades, but it i... more The worldwide prevalence of allergic diseases has increased during the last few decades, but it is not well known about the sensitization profiles of adult patients in Shanghai. This study aimed to identify the prevalence and sex difference of allergen sensitization among adult with allergic diseases in Shanghai. The sensitization profiles of 7,996 patients (18-60 yrs old) with allergic diseases at our center were retrospectively analyzed, based on the results of skin prick tests. The prevalence of various allergen, age and sex difference of allergen sensitization were investigated. The most common allergens were Dermatophagoides farinae (73.10%), Dermatophagoides pteronyssinus (72.21%) and Blomia tropicalis (53.10%), followed by Blattella germanica (31.18%), Periplaneta americana (27.75%), dog dander (24.96%), mixed molds (17.56%), and shrimp (17.02%). For the patients aged 18-30 yrs, mites and animal dander were most common allergen, whereas cockroaches and mixed molds for those a...
Journal of agricultural and food chemistry, Jan 28, 2017
Enterotoxigenic Escherichia coli (ETEC) K88 causes diarrhea in weaned piglets and represent a sui... more Enterotoxigenic Escherichia coli (ETEC) K88 causes diarrhea in weaned piglets and represent a suitable model system for ETEC causing childhood diarrhea. This study aimed to evaluate the effects of oligosaccharides against ETEC K88 adhesion to porcine erythrocytes with two bioassays. Galactosylated chitosan-oligosaccharides (Gal-COS) were synthesized through transgalactosylation by β-galactosidase. Fractions 2-5 of Gal-COS were obtained through cation exchange and size exclusion chromatography. Fractions 2-5 of acetylated Gal-COS were obtained through chemical acetylation followed by size exclusion chromatography. Gal-COS F2 containing the largest oligosaccharides had the highest antiadhesion activity with the minimum inhibitory concentration of 0.22 g/L, followed by F3 and F4. Acetylation of Gal-COS decreased their ability to reduce ETEC K88 adhesion. The composition of active oligosaccharides was determined with LC-MS. Galactosylation of COS produces oligosaccharides which reduce E...
Journal of colloid and interface science, Jan 3, 2016
Magnetic Fe3O4-polydopamine (PDA) hybrid hollow microspheres, in which Fe3O4 nanoparticles were f... more Magnetic Fe3O4-polydopamine (PDA) hybrid hollow microspheres, in which Fe3O4 nanoparticles were firmly incorporated in the cross-linked PDA shell, have been prepared through the formation of core/shell PS/Fe3O4-PDA composites based on template-induced covalent assembly method, followed by core removal in a tetrahydrofuran solution. The morphology, composition, thermal property and magnetic property of the magnetic hybrid hollow microspheres were characterized by SEM, TEM, FT-IR, XRD, TGA, and vibrating sample magnetometer, respectively. Results revealed that the magnetic hybrid hollow microspheres had about 380nm of inner diameter and about 30nm of shell thickness, and 13.6emug(-1) of magnetization saturation. More importantly, the Fe3O4-PDA hybrid hollow microspheres exhibited intrinsic peroxidase-like activity, as they could quickly catalyze the oxidation of typical substrates 3,3',5,5'-tetramethylbenzidine (TMB) in the presence of hydrogen peroxide. Compared with PDA/Fe3O...
The evolution and spread of antibiotic-resistant pathogens has become a major threat to public he... more The evolution and spread of antibiotic-resistant pathogens has become a major threat to public health. Advanced tools are urgently needed to quickly diagnose antibiotic-resistant infections to initiate appropriate treatment. Here we report the development of a highly sensitive flow cytometric method to probe minority population of antibiotic-resistant bacteria via single cell detection. Monoclonal antibody against TEM-1 β-lactamase and Alexa Fluor 488-conjugated secondary antibody were used to selectively label resistant bacteria green, and nucleic acid dye SYTO 62 was used to stain all the bacteria red. A laboratory-built high sensitivity flow cytometer (HSFCM) was applied to simultaneously detect the side scatter and dual-color fluorescence signals of single bacteria. By using E. coli JM109/pUC19 and E. coli JM109 as the model systems for antibiotic-resistant and antibiotic-susceptible bacteria, respectively, as low as 0.1% of antibiotic-resistant bacteria were accurately quantifi...
ABSTRACT Hydrogen is expected to play a major role in the development of sustainable energy and e... more ABSTRACT Hydrogen is expected to play a major role in the development of sustainable energy and environment. Electrocatalytic hydrogen evolution reaction (HER) is known as an efficient method for large-scale hydrogen production, and in this electrochemical process, efficient and low-cost electrocatalysts are indispensable. Recent advances have revealed that nanostructured molybdenum sulfides (MoSx) would be promising alternatives to Pt for the electrochemical generation of hydrogen from water. In this review, we focus on the recent progress on MoSx-based materials as electrocatalysts toward the HER under acidic condition. Moreover, future research scope and important challenges emerging from MoSx nanostructures are discussed toward the development of more advanced and efficient electrocatalysts for HER.
High‐purity hydrogen produced by water splitting is considered as one of the most promising fuels... more High‐purity hydrogen produced by water splitting is considered as one of the most promising fuels to replace traditional fossil fuels. Developing highly efficient electrocatalysts toward hydrogen evolution is vital for the realization of large‐scale H2 generation. Glycerol is used herein in a facile solvothermal process to synthesize edge‐rich ultrathin MoS2/reduced graphene oxide (RGO) composites. The introduction of glycerol plays an important role in the formation of such interesting structures. The MoS2/RGO electrocatalyst exhibits excellent hydrogen evolution reaction (HER) activity and remarkable stability, owing to the rich active edges and improved electrical conductivity of the catalyst composites. This work provides new insights to engineer the structures of MoSx‐based composites and thus achieves more active and efficient electrocatalysts.
In this study, Pseudosperma arenarium is proposed as a new species, based on morphological, ecolo... more In this study, Pseudosperma arenarium is proposed as a new species, based on morphological, ecological, molecular and biochemical evidence. The new species grows on sandy ground under Populus and Pinus sylvestris in north-western China and northern Europe, respectively. It is characterised by the combination of the robust habit, nearly glabrous pileus, large cylindrical basidiospores, thin-walled cheilocystidia and ecological associations with Populus alba × P. berolinensis and Pinus sylvestris and unique phylogenetic placement. Additionally, a comprehensive toxin determination of the new species using ultra-high performance liquid chromatography-tandem mass spectrometry was conducted. Results showed that it was a muscarine-positive species. The content were approximately five times higher in the pilei [4012.2 ± 803.1–4302.3 ± 863.2 mg/kg (k = 2, p = 95%)] than in the stipes [850.4 ± 171.1–929.1 ± 184.2 mg/kg (k = 2, p = 95%)], demonstrating the severity of mushroom poisoning when p...
Controllable synthesis of multidimensional carboxylic acid-based NiFe MOFs is realized by a simpl... more Controllable synthesis of multidimensional carboxylic acid-based NiFe MOFs is realized by a simple solvent-assisted strategy as efficient electrocatalysts for oxygen evolution.
Hydrazine fuel cells are promising sustainable power sources. However, the high price and limited... more Hydrazine fuel cells are promising sustainable power sources. However, the high price and limited reserves of noble metal catalysts that promote the sluggish cathodic and anodic electrochemical reactions hinder their practical applications. Reflecting the enhanced diffusion and improved kinetics of nanostructured non-noble metal electrocatalysts, we report an efficient zeolitic-imidazole framework-derived trifunctional electrocatalyst for hydrazine oxidation, oxygen, and hydrogen peroxide reduction. Experimental results and theoretical calculations corroborate that the nanocarbon architecture with abundant Co-N species enhances the electronic interaction and optimizes the energy barriers of anodic hydrazine oxidation and cathodic oxygen reduction. The resulting assembled hydrazine-oxygen fuel cell yields a cell voltage and power density of 0.74 V and 20.5 mW cm-2, respectively. Moreover, benefiting from the liquid-liquid diffusion, the hydrazine-hydrogen peroxide cell shows a boosted cell voltage and power density, corresponding to 1.68 V and 41.0 mW cm-2. This work offers a highly active non-noble metal multifunctional electrocatalyst with a pioneering diffusion philosophy in the liquid electrochemical cells.
The development of highly efficient non-precious metal catalysts for oxygen evolution reaction (O... more The development of highly efficient non-precious metal catalysts for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is key for large-scale hydrogen evolution through water splitting technology. Here, we report an air-stable Cu-based nanostructure consisting of Mn doped CuCl and CuO (CuCl/CuO(Mn)-NF) as a dual functional electrocatalyst for water splitting. CuCl is identified as the main active component, together with Mn doping and the synergistic effect between CuCl and CuO are found to make responsibility for the excellent OER and HER catalytic activity and stability. The assembled electrolyzes also exhibit decent water splitting performance. This work not only provides a simple method for preparing Cu-based composite catalyst, but also demonstrates the great potential of Cu-based non-noble metal electrocatalysts for water splitting and other renewable energy conversion technologies.
Rendiconti del Circolo Matematico di Palermo, 2004
Main results: The normal structure coefficients of the Orlicz Sequence spacesl Ф generated by the... more Main results: The normal structure coefficients of the Orlicz Sequence spacesl Ф generated by theN-function Φ equipped with Luxemburg and Orlicz norm have the exact value: (i) IfF Ф(t)=tϕ(t)/Φ(t) is decreasing,C Ф 0 >2, then $$N(l^{(\Phi )} ) = N(l^\Phi ) = 2^{C_\Phi ^{\mathop 0\limits^{\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{1} } } } $$ ; (ii) IfF qФ(t) is increasing, 1C Ф 0 $$N(l^{(\Phi )}
This review provides a focused overview on advanced metal/covalent–organic framework-based materi... more This review provides a focused overview on advanced metal/covalent–organic framework-based materials as electrocatalysts for efficient water splitting.
Asian Pacific journal of allergy and immunology, Jan 8, 2018
The worldwide prevalence of allergic diseases has increased during the last few decades, but it i... more The worldwide prevalence of allergic diseases has increased during the last few decades, but it is not well known about the sensitization profiles of adult patients in Shanghai. This study aimed to identify the prevalence and sex difference of allergen sensitization among adult with allergic diseases in Shanghai. The sensitization profiles of 7,996 patients (18-60 yrs old) with allergic diseases at our center were retrospectively analyzed, based on the results of skin prick tests. The prevalence of various allergen, age and sex difference of allergen sensitization were investigated. The most common allergens were Dermatophagoides farinae (73.10%), Dermatophagoides pteronyssinus (72.21%) and Blomia tropicalis (53.10%), followed by Blattella germanica (31.18%), Periplaneta americana (27.75%), dog dander (24.96%), mixed molds (17.56%), and shrimp (17.02%). For the patients aged 18-30 yrs, mites and animal dander were most common allergen, whereas cockroaches and mixed molds for those a...
Journal of agricultural and food chemistry, Jan 28, 2017
Enterotoxigenic Escherichia coli (ETEC) K88 causes diarrhea in weaned piglets and represent a sui... more Enterotoxigenic Escherichia coli (ETEC) K88 causes diarrhea in weaned piglets and represent a suitable model system for ETEC causing childhood diarrhea. This study aimed to evaluate the effects of oligosaccharides against ETEC K88 adhesion to porcine erythrocytes with two bioassays. Galactosylated chitosan-oligosaccharides (Gal-COS) were synthesized through transgalactosylation by β-galactosidase. Fractions 2-5 of Gal-COS were obtained through cation exchange and size exclusion chromatography. Fractions 2-5 of acetylated Gal-COS were obtained through chemical acetylation followed by size exclusion chromatography. Gal-COS F2 containing the largest oligosaccharides had the highest antiadhesion activity with the minimum inhibitory concentration of 0.22 g/L, followed by F3 and F4. Acetylation of Gal-COS decreased their ability to reduce ETEC K88 adhesion. The composition of active oligosaccharides was determined with LC-MS. Galactosylation of COS produces oligosaccharides which reduce E...
Journal of colloid and interface science, Jan 3, 2016
Magnetic Fe3O4-polydopamine (PDA) hybrid hollow microspheres, in which Fe3O4 nanoparticles were f... more Magnetic Fe3O4-polydopamine (PDA) hybrid hollow microspheres, in which Fe3O4 nanoparticles were firmly incorporated in the cross-linked PDA shell, have been prepared through the formation of core/shell PS/Fe3O4-PDA composites based on template-induced covalent assembly method, followed by core removal in a tetrahydrofuran solution. The morphology, composition, thermal property and magnetic property of the magnetic hybrid hollow microspheres were characterized by SEM, TEM, FT-IR, XRD, TGA, and vibrating sample magnetometer, respectively. Results revealed that the magnetic hybrid hollow microspheres had about 380nm of inner diameter and about 30nm of shell thickness, and 13.6emug(-1) of magnetization saturation. More importantly, the Fe3O4-PDA hybrid hollow microspheres exhibited intrinsic peroxidase-like activity, as they could quickly catalyze the oxidation of typical substrates 3,3',5,5'-tetramethylbenzidine (TMB) in the presence of hydrogen peroxide. Compared with PDA/Fe3O...
The evolution and spread of antibiotic-resistant pathogens has become a major threat to public he... more The evolution and spread of antibiotic-resistant pathogens has become a major threat to public health. Advanced tools are urgently needed to quickly diagnose antibiotic-resistant infections to initiate appropriate treatment. Here we report the development of a highly sensitive flow cytometric method to probe minority population of antibiotic-resistant bacteria via single cell detection. Monoclonal antibody against TEM-1 β-lactamase and Alexa Fluor 488-conjugated secondary antibody were used to selectively label resistant bacteria green, and nucleic acid dye SYTO 62 was used to stain all the bacteria red. A laboratory-built high sensitivity flow cytometer (HSFCM) was applied to simultaneously detect the side scatter and dual-color fluorescence signals of single bacteria. By using E. coli JM109/pUC19 and E. coli JM109 as the model systems for antibiotic-resistant and antibiotic-susceptible bacteria, respectively, as low as 0.1% of antibiotic-resistant bacteria were accurately quantifi...
ABSTRACT Hydrogen is expected to play a major role in the development of sustainable energy and e... more ABSTRACT Hydrogen is expected to play a major role in the development of sustainable energy and environment. Electrocatalytic hydrogen evolution reaction (HER) is known as an efficient method for large-scale hydrogen production, and in this electrochemical process, efficient and low-cost electrocatalysts are indispensable. Recent advances have revealed that nanostructured molybdenum sulfides (MoSx) would be promising alternatives to Pt for the electrochemical generation of hydrogen from water. In this review, we focus on the recent progress on MoSx-based materials as electrocatalysts toward the HER under acidic condition. Moreover, future research scope and important challenges emerging from MoSx nanostructures are discussed toward the development of more advanced and efficient electrocatalysts for HER.
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