Transition metal carbides/nitrides/carbonitrides,commonly referred to as MXenes,have gained widespread attention since their discovery in 2011 as a promising family of two-dimensional(2D)materials.Their impressive che...Transition metal carbides/nitrides/carbonitrides,commonly referred to as MXenes,have gained widespread attention since their discovery in 2011 as a promising family of two-dimensional(2D)materials.Their impressive chemical,electrical,thermal,mechanical,and biological properties have fueled a surge in research focused on the synthesis and application of MXenes in various fields,including membranebased separation.By engineering the materials and membrane structures,MXene-based membranes have demonstrated remarkable separation performance and added functionalities,such as antifouling and photocatalytic properties.In this review,we aim to have a timely and critical review of research on their fabrication strategy and performance in advanced molecular separation and ion exchange,beginning with a brief introduction of the preparation and physicochemical properties of MXenes.Finally,outlooks and future works are outlined with the aims to provide valuable insights and guidance for advancing membranes'applications in different separation domains.展开更多
The development of highly efficient Pt-based alloy nanocatalysts is important but remains challenging for fuel cells commercialization.Here,a new class of zigzag-like platinum-zinc (Pt-Zn) alloy nanowires (NWs) with r...The development of highly efficient Pt-based alloy nanocatalysts is important but remains challenging for fuel cells commercialization.Here,a new class of zigzag-like platinum-zinc (Pt-Zn) alloy nanowires (NWs) with rough surface and controllable composition is reported.The merits of anisotropic one-dimensional nanostructure,stable high-index facets and coordinatively unsaturated Pt sites endow the composition-optimal Pt94Zn6 NWs with a mass activity of 7.2 and 6.2 times higher than that of commercial Pt black catalysts toward methanol/ethanol oxidation,respectively.Alloying-induced d-band electron modulation and lattice strain effects weaken the adsorption strength of poisoning species,which originally enhances the catalytic activity of Pt-Zn NWs.This study provides a new perspective of Pt-Zn electrocatalysts with intrinsic mechanism for enhanced catalytic performance.展开更多
Citridones E-G (1-3), three new phenylpyridone derivatives together with two known curvularins (4 and 5) were isolated from the solid culture of the endophytic fungus Penicillium sumatrense GZWMJZ-313 in Garcinia mult...Citridones E-G (1-3), three new phenylpyridone derivatives together with two known curvularins (4 and 5) were isolated from the solid culture of the endophytic fungus Penicillium sumatrense GZWMJZ-313 in Garcinia multiflora. The structures of new compounds were determined in the light of spectroscopic data,X-ray and ECD calculation. Compounds 1 and 3 are racemates, while compound 2 is optically pure.Compounds 1 and 4 showed antibacterial and antifungal activities against Staphylococcus aureus,Pseudomonas aeruginosa, Clostridium perfringens, Escherichia coli and Candida albicans with MIC values ranging from 8 μg/mL to 64 μg/mL.展开更多
The article Highly active zigzag-like Pt-Zn alloy nanowires with high-index facets for alcohol electrooxidation, written by Xiaoqiang Cui and Weitao Zheng, was erroneously originally published electronically on the pu...The article Highly active zigzag-like Pt-Zn alloy nanowires with high-index facets for alcohol electrooxidation, written by Xiaoqiang Cui and Weitao Zheng, was erroneously originally published electronically on the publisher’s internet portal (currently SpringerLink) on 6 April 2019 with incomplete Electronic Supplementary Material (ESM), which should contain 16 figures and 3 tables. You will find the complete supplementary material file online linked to this publisher’s erratum.展开更多
基金Zhejiang Outstanding Youth Fund(LR22E080007)the National Natural Science Foundation of China(52070170,51978628,and 52300112)+1 种基金Zhejiang Provincial Ten Thousand Talent Program(ZJWR0302055)Natural Science Foundation of Zhejiang Province(LQ23E080008)。
文摘Transition metal carbides/nitrides/carbonitrides,commonly referred to as MXenes,have gained widespread attention since their discovery in 2011 as a promising family of two-dimensional(2D)materials.Their impressive chemical,electrical,thermal,mechanical,and biological properties have fueled a surge in research focused on the synthesis and application of MXenes in various fields,including membranebased separation.By engineering the materials and membrane structures,MXene-based membranes have demonstrated remarkable separation performance and added functionalities,such as antifouling and photocatalytic properties.In this review,we aim to have a timely and critical review of research on their fabrication strategy and performance in advanced molecular separation and ion exchange,beginning with a brief introduction of the preparation and physicochemical properties of MXenes.Finally,outlooks and future works are outlined with the aims to provide valuable insights and guidance for advancing membranes'applications in different separation domains.
基金the National Key Research and Development Program of China (No.2016YFA0200400)the National Natural Science Foundation of China (Nos.51571100,51602305, 51522212,51421002,and 51672307)+1 种基金Program for JLU Science and Technology Innovative Research Team (JLUSTIRT,2017TD-09)the Fundamental Research Funds for the Central Universities and the Graduate Innovation Fund of Jilin University.
文摘The development of highly efficient Pt-based alloy nanocatalysts is important but remains challenging for fuel cells commercialization.Here,a new class of zigzag-like platinum-zinc (Pt-Zn) alloy nanowires (NWs) with rough surface and controllable composition is reported.The merits of anisotropic one-dimensional nanostructure,stable high-index facets and coordinatively unsaturated Pt sites endow the composition-optimal Pt94Zn6 NWs with a mass activity of 7.2 and 6.2 times higher than that of commercial Pt black catalysts toward methanol/ethanol oxidation,respectively.Alloying-induced d-band electron modulation and lattice strain effects weaken the adsorption strength of poisoning species,which originally enhances the catalytic activity of Pt-Zn NWs.This study provides a new perspective of Pt-Zn electrocatalysts with intrinsic mechanism for enhanced catalytic performance.
基金financially supported by the 100 Leading Talents of Guizhou Province (fund for W. Zhu and X. Hao)the Science and Technology Project of Guizhou (No. QKHT Z-20144007)the Academician Workstation of Guizhou (No. QKH YSZ2015-4009)
文摘Citridones E-G (1-3), three new phenylpyridone derivatives together with two known curvularins (4 and 5) were isolated from the solid culture of the endophytic fungus Penicillium sumatrense GZWMJZ-313 in Garcinia multiflora. The structures of new compounds were determined in the light of spectroscopic data,X-ray and ECD calculation. Compounds 1 and 3 are racemates, while compound 2 is optically pure.Compounds 1 and 4 showed antibacterial and antifungal activities against Staphylococcus aureus,Pseudomonas aeruginosa, Clostridium perfringens, Escherichia coli and Candida albicans with MIC values ranging from 8 μg/mL to 64 μg/mL.
文摘The article Highly active zigzag-like Pt-Zn alloy nanowires with high-index facets for alcohol electrooxidation, written by Xiaoqiang Cui and Weitao Zheng, was erroneously originally published electronically on the publisher’s internet portal (currently SpringerLink) on 6 April 2019 with incomplete Electronic Supplementary Material (ESM), which should contain 16 figures and 3 tables. You will find the complete supplementary material file online linked to this publisher’s erratum.
