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学者姓名:员汝胜
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MXene species have emerged as a class of compelling electrode materials in the field of capacitive deionization (CDI). However, as an excellent member of the MXene family, the Nb4C3Tx has not received much attention in terms of CDI. Herein, we have not only established the feasibility of Nb4C3Tx as a potential desalination electrode materiel but also proposed a wrinkle-engineering strategy that can effectively improve the CDI performance of Nb4C3Tx freestanding membranes. Specifically, the introduction of wrinkles on Nb4C3Tx nanosheets contributes to optimizing the interlayer space, accessibility, conductivity, stability, and CDI performance of the assembled membranes. In particular, the optimized wrinkled Nb4C3Tx membranes can achieve an ultrahigh desalination capacity of similar to 188.2 mg g(-1) at 1.6 V accompanied by a fast adsorption rate of similar to 12.6mg g(-1) min(-1), showing great competitiveness with other MXene individual electrodes. In addition, the as-designed electrodes also exhibit superior cycle desalination stability as well as good applicability to different salts (such as LiCl, KCl, CaCl2, and MgCl2). This work both extends the MXene material applicable to CDI and offers an effective solution for improving the properties of Nb4C3Tx-MXene lamellar membrane electrodes, opening up enormous opportunities for the use of such MXene species in the field of electrochemical desalination.
Keyword :
Capacitive deionization Capacitive deionization Faradaic electrodes Faradaic electrodes Freestanding membranes Freestanding membranes Nb4C3Tx Nb4C3Tx Wrinkle-engineering Wrinkle-engineering
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GB/T 7714 | Liu, Haoyang , Shang, Jing , Liu, Liyan et al. Capacitive deionization using wrinkle-engineered Nb4C3Tx-MXene freestanding membranes [J]. | CHEMICAL ENGINEERING JOURNAL , 2025 , 507 . |
MLA | Liu, Haoyang et al. "Capacitive deionization using wrinkle-engineered Nb4C3Tx-MXene freestanding membranes" . | CHEMICAL ENGINEERING JOURNAL 507 (2025) . |
APA | Liu, Haoyang , Shang, Jing , Liu, Liyan , Yuan, Rusheng , Long, Jinlin , Xu, Chao . Capacitive deionization using wrinkle-engineered Nb4C3Tx-MXene freestanding membranes . | CHEMICAL ENGINEERING JOURNAL , 2025 , 507 . |
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The doping of metals onto the inorganic non-metallic catalyst g-C3N4 facilitates the reduction of CO2 to C1 and C2 products, representing an effective method for reducing atmospheric carbon dioxide and mitigating global warming. This paper investigates the stability and catalytic activity of g-C3N4 doped with Fe, Co, Ni, and Cu using density functional theory (DFT). The optimal reduction pathways of CO2 at different metal sites are analyzed. The results show that bimetallic doping exhibits a synergistic effect compared to traditional metal doping, significantly enhancing the visible light response range of g-C3N4, promoting the adsorption and activation of CO2, and lowering the Gibbs free energy barrier of the reduction intermediates. Of the materials studied, Co2@g- C3N4 and Ni2@g-C3N4 require higher energy and show poor CO2 activation performance. In contrast, Fe2@g- C3N4's site1 and site2 display superior catalytic performance with activation energy barriers of 0.74 eV and 0.78 eV, respectively. Cu2@g-C3N4, on the other hand, shows favorable performance only at site1, with an activation energy barrier of 0.63 eV. This catalyst is expected to serve as an effective tool for CO2 reduction, providing a new strategy for the design and development of more efficient and selective CO2 reduction catalysts.
Keyword :
C 2 products C 2 products CO 2 reduction CO 2 reduction Dual-atom catalysts Dual-atom catalysts First-principles calculation First-principles calculation Graphite carbon nitride Graphite carbon nitride
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GB/T 7714 | Hu, Xiaoyi , Li, Qingyu , Li, Weiguo et al. Spin-polarized binuclear transition metal doping on g-C3N4 for photocatalytic CO2 reduction to C2 products: A DFT study [J]. | MOLECULAR CATALYSIS , 2025 , 572 . |
MLA | Hu, Xiaoyi et al. "Spin-polarized binuclear transition metal doping on g-C3N4 for photocatalytic CO2 reduction to C2 products: A DFT study" . | MOLECULAR CATALYSIS 572 (2025) . |
APA | Hu, Xiaoyi , Li, Qingyu , Li, Weiguo , Deng, Yixin , Liu, Diwen , Zhang, Yanjie et al. Spin-polarized binuclear transition metal doping on g-C3N4 for photocatalytic CO2 reduction to C2 products: A DFT study . | MOLECULAR CATALYSIS , 2025 , 572 . |
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Photocatalytic oxidative coupling of amines is considered a mild, efficient, and sustainable strategy for the synthesis of imines. As a versatile organic semiconductor, conjugated microporous polymers (CMPs) are attractive in photocatalysis areas due to the diversity of their polymeric monomers. Herein, we report that in addition to the design of monomers, size-confined polymerization is also a feasible strategy to modulate the structure and photocatalysis properties of CMPs. We adopted dibromopyrazine as polymeric units to prepare pyrazine-involved hollow spherical CMPs (H-PyB) using a template method and successfully performed sizeconfined polymerization of hollow samples by resizing the templates. Interestingly, the small confinement space induced the formation of CMPs with better conjugate extensibility, resulting in enhanced conductivity, narrowed bandgaps, improved photoelectric performance, etc. As a result, small-sized H-PyB CMPs had superior activity for the photocatalytic oxidation of amines. Particularly, the smallest H-PyB CMPs that we designed in the present work exhibited excellent performance for the photocatalytic coupling oxidation of amines. When using benzylamine as a model substrate, the yield of the corresponding imine reached similar to 113 mmol center dot g(- 1)center dot h(-1), accompanied by almost 100 % selectivity. Furthermore, the as-designed confined samples exhibited stable photocatalytic activity as well as good applicability for oxidative coupling of different amines. This work not merely reports a kind of CMP photocatalysts with excellent performance for the imine coupling oxidation but also proposes an alternative strategy for constructing high-performance organic photocatalysts by size-confined synthesis.
Keyword :
Amine Amine Conjugated microporous polymers Conjugated microporous polymers Photocatalytic oxidation Photocatalytic oxidation Size-confined synthesis Size-confined synthesis Visible light Visible light
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GB/T 7714 | You, Shaojie , Ding, Zhengxin , Yuan, Rusheng et al. Confined synthesis of conjugated microporous polymers for selective photocatalytic oxidation of amines [J]. | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2024 , 664 : 63-73 . |
MLA | You, Shaojie et al. "Confined synthesis of conjugated microporous polymers for selective photocatalytic oxidation of amines" . | JOURNAL OF COLLOID AND INTERFACE SCIENCE 664 (2024) : 63-73 . |
APA | You, Shaojie , Ding, Zhengxin , Yuan, Rusheng , Long, Jinlin , Xu, Chao . Confined synthesis of conjugated microporous polymers for selective photocatalytic oxidation of amines . | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2024 , 664 , 63-73 . |
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CdS/UiO-66-NH2 nanocomposite was solvothermally fabricated from cadmium acetate and the pre -synthesized UiO-66-NH2 in dimethyl sulfoxide (DMSO), which acted as the sulfur source. The as -obtained CdS/UiO-66-NH2 nanocomposite was immobilized on a glass fiber cloth (GF) and was applied for hydrogen sulfide (H2S) removal. The resultant GF immobilized CdS/UiO-66-NH2 nanocomposite exhibited a superior activity and high stability for H2S removal under visible light, in which UiO-66-NH2 acts as the main adsorbent and enriches H2S to promote CdS-based photocatalysis, while photocatalysis by CdS decomposes H2S adsorbed on UiO-66-NH2 to realize an in -situ regeneration of the adsorbent. The introduction of UiO-66-NH2 as the main adsorbent suppresses a fast deactivation of CdS due to an irreversible coordination between metal cation Cd2+ and H2S. This study not only developed a new type of material for fast and efficient removal of H2S, but also underscores the high potential of coupling physical adsorption and photocatalysis for the removal of volatile organic compounds (VOCs) and other gaseous pollutants in the environment.
Keyword :
Adsorption Adsorption CdS CdS Hydrogen sulfide Hydrogen sulfide Photocatalysis Photocatalysis UiO-66-NH 2 UiO-66-NH 2
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GB/T 7714 | Bai, Yaohui , Chen, Honghan , Cheng, Hao et al. Coupling physical adsorption and photocatalysis over CdS/UiO-66-NH2 for efficient removal of hydrogen sulfide [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 341 . |
MLA | Bai, Yaohui et al. "Coupling physical adsorption and photocatalysis over CdS/UiO-66-NH2 for efficient removal of hydrogen sulfide" . | SEPARATION AND PURIFICATION TECHNOLOGY 341 (2024) . |
APA | Bai, Yaohui , Chen, Honghan , Cheng, Hao , Ding, Zhengxin , Yuan, Rusheng , Li, Zhaohui . Coupling physical adsorption and photocatalysis over CdS/UiO-66-NH2 for efficient removal of hydrogen sulfide . | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 341 . |
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Photothermal catalytic N-acetylation of aniline has been a promising strategy to synthesize amides, which combined the advantages of thermal catalysis and photocatalysis. Herein, we demonstrate a high-performance strategy to synthesize amides catalyzed by the in-situ formed first-row transition-metal (Fe, Co, Ni, Mn et al.) complexes nanodots (TMC NDs) under solar light excitation without using noble metals or strong acids. The dualfunctional nitriles substrates acted as the ligands to coordinate with transition-metal salts affording photosensitive TMC NDs with high solar-to-thermal energy conversion efficiency. Intramolecular charge transitions reduced the energy barrier of nitriles activation by weakening C---N bond and triggered near-field temperature rise via the electron-phonon scattering non-radiative pathway. The reaction system exhibited good tolerance to different functional groups, affording a series of amide derivatives. Such a dynamic coordination reaction mode and the in-situ formed TMC NDs opens new avenues toward solar-heat conversion via photon-phonon coupling in the field of chemical synthesis.
Keyword :
Amide synthesis Amide synthesis N-acyl sources N-acyl sources Photon -phonon coupling Photon -phonon coupling Photothermal catalysis Photothermal catalysis Transition-metal complexes nanodots Transition-metal complexes nanodots
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GB/T 7714 | Ma, Xiong-Feng , Xiao, Rui , Wei, Yingcong et al. Photothermal catalytic conversion of water and inert nitriles to amide activated by in-situ formed transition-metal-complex nanodots [J]. | APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY , 2024 , 344 . |
MLA | Ma, Xiong-Feng et al. "Photothermal catalytic conversion of water and inert nitriles to amide activated by in-situ formed transition-metal-complex nanodots" . | APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY 344 (2024) . |
APA | Ma, Xiong-Feng , Xiao, Rui , Wei, Yingcong , Zhang, Shaohui , Hu, Xiaoyi , Zhang, Ling et al. Photothermal catalytic conversion of water and inert nitriles to amide activated by in-situ formed transition-metal-complex nanodots . | APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY , 2024 , 344 . |
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The valorization of native lignin to functionalized aromatic compounds under visible light is appealing yet challenging. In this communication, colloidal mercaptoalkanoic acid capped ultrathin ZnIn2S4 (ZIS) microbelts was successfully fabricated, which was used as a superior catalyst for depolymerization of native lignin in birch woodmeal under visible light, with an optimum yield of 28.8 wt % to functionalized aromatic monomers achieved in 8 h. The capped mercaptoalkanoic acid not only enables a solvent modulated reversible interchange of ZIS between the colloidal state for efficient reaction and the aggregated state for facile separation, but also serves as a precursor for light initiated generation of reactive thiyl radical for highly selective cleavage of beta-O-4 bond in native lignin. This work provides a green and efficient strategy for the depolymerization of native lignin to functionalized aromatic monomers under mild conditions, which involves a new mechanism for the cleavage of beta-O-4 bonds in native lignin. The capability of cleavage of beta-O-4 bonds in native lignin by photogenerated thiyl radicals also demonstrates the great potential of using photogenerated thiyl radicals in organics transformations.
Keyword :
Depolymerization Depolymerization Heterogeneous Catalysis Heterogeneous Catalysis Lignin Lignin Photochemistry Photochemistry Radicals Radicals
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GB/T 7714 | Wang, Jiaqi , Li, Yaxin , Liu, Hurunqing et al. Depolymerization of Native Lignin over Thiol Capped Ultrathin ZnIn2S4 Microbelts Mediated by Photogenerated Thiyl Radical [J]. | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2024 , 63 (37) . |
MLA | Wang, Jiaqi et al. "Depolymerization of Native Lignin over Thiol Capped Ultrathin ZnIn2S4 Microbelts Mediated by Photogenerated Thiyl Radical" . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 63 . 37 (2024) . |
APA | Wang, Jiaqi , Li, Yaxin , Liu, Hurunqing , Ding, Zhengxin , Yuan, Rusheng , Li, Zhaohui . Depolymerization of Native Lignin over Thiol Capped Ultrathin ZnIn2S4 Microbelts Mediated by Photogenerated Thiyl Radical . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2024 , 63 (37) . |
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The electrocatalytic conversion of inert CO2 to value-added chemical fuels powered by renewable energy is one of the benchmark approaches to address excessive carbon emissions and achieve carbon-neutral energy restructuring. However, the adsorption/activation of supersymmetric CO2 is facing insurmountable challenges that constrain its industrial-scale applications. Here, this theory-guided study confronts these challenges by leveraging the synergies of bimetallic sites and defect engineering, where pyrochlore-type semiconductor A(2)B(2)O(7) is employed as research platform and the conversion of CO2-to-HCOOH as the model reaction. Specifically, defect engineering intensified greatly the chemisorption-induced CO2 polarization via the bimetallic coordination, thermodynamically beneficial to the HCOOH production via the *HCO2 intermediate. The optimal V-BSO-430 electrocatalyst with abundant surface oxygen vacancies achieved a superior HCOOH yield of 116.7 mmol h(-1) cm(-2) at -1.2 V-RHE, rivalling the incumbent similar reaction systems. Furthermore, the unique catalytic unit featured with a Bi-1-Sn-Bi-2 triangular structure, which is reconstructed by defect engineering, and altered the pathway of CO2 adsorption and activation to allow the preferential affinity of the suspended O atom in *HCO2 to H. As a result, V-BSO-430 gave an impressive FEHCOOH of 93% at -1.0 V-RHE. This study held promises for inspiring the exploration of bimetallic materials from the massive semiconductor database.
Keyword :
A(2)B(2)O(7) A(2)B(2)O(7) bimetallic sites bimetallic sites CO2 reduction CO2 reduction electrocatalysis electrocatalysis pyrochlore pyrochlore
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GB/T 7714 | Zhao, Jiwu , Wang, Jiashun , Xue, Lan et al. Surface Oxygen Defect Engineering of A2B2O7 Pyrochlore Semiconductors Boosts the Electrocatalytic Reduction of CO2-to-HCOOH [J]. | SMALL , 2024 , 20 (38) . |
MLA | Zhao, Jiwu et al. "Surface Oxygen Defect Engineering of A2B2O7 Pyrochlore Semiconductors Boosts the Electrocatalytic Reduction of CO2-to-HCOOH" . | SMALL 20 . 38 (2024) . |
APA | Zhao, Jiwu , Wang, Jiashun , Xue, Lan , Wang, Ying , Wen, Na , Huang, Haowei et al. Surface Oxygen Defect Engineering of A2B2O7 Pyrochlore Semiconductors Boosts the Electrocatalytic Reduction of CO2-to-HCOOH . | SMALL , 2024 , 20 (38) . |
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Converting clean solar energy into chemical energy through artificial photosynthesis is an effective solution to solve the energy and environmental issues. Here, we report a Cs3Bi2Br9/Bi2WO6 (CBB/BWO) Z-scheme heterojunction constructed via electrostatic self-assembly, which facilitates efficient separation of photogenerated carriers and ensures the corresponding redox capacity of both components. By sharing Bi atoms, a Br-Bi-O bond is established between CBB and BWO, serving as an "electron bridge". The electrons generated by BWO are efficiently channeled to CBB through the heterojunction-formed "electron bridge", thereby achieving effective photocatalytic CO2 reduction. Under simulated sunlight conditions, it exhibits the highest CO yield of 72.52 mu mol g(-1) (without the addition of any precious metal, photosensitizers or sacrifices), which is approximately 7-fold and 18-fold greater than that of pure CBB and BWO, respectively. This work provides a more profound comprehension of the regulation of electron transfer through interfacial chemical bonds, thereby proposing a promising strategy for the development of efficient heterojunction photocatalysts for CO2 photoreduction.
Keyword :
Bi2WO6 Bi2WO6 CO2 reduction CO2 reduction Perovskite Perovskite Photocatalysis Photocatalysis Z-scheme Z-scheme
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GB/T 7714 | Liu, Haolan , Sun, Jingjing , Lin, Qianying et al. An Electron Bridge of Shared Atoms Mediated Cs3Bi2Br9/Bi2WO6 Z-Scheme Heterojunction for Photocatalytic CO2 Reduction [J]. | CHEMCATCHEM , 2024 , 16 (22) . |
MLA | Liu, Haolan et al. "An Electron Bridge of Shared Atoms Mediated Cs3Bi2Br9/Bi2WO6 Z-Scheme Heterojunction for Photocatalytic CO2 Reduction" . | CHEMCATCHEM 16 . 22 (2024) . |
APA | Liu, Haolan , Sun, Jingjing , Lin, Qianying , Wang, Ying , Wang, Shuo , Wang, Shuowen et al. An Electron Bridge of Shared Atoms Mediated Cs3Bi2Br9/Bi2WO6 Z-Scheme Heterojunction for Photocatalytic CO2 Reduction . | CHEMCATCHEM , 2024 , 16 (22) . |
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Prussian blue analogues (PBAs) have been widely studied as cathodes for potassium-ion batteries (PIBs) due to their three-dimensional framework structure and easily adjustable composition. However, the phase transition behavior and [Fe(CN)(6)](4-) anionic defects severely deteriorate electrochemical performances. Herein, we propose a defect-free potassium iron manganese hexacyanoferrate (K1.47Fe0.5Mn0.5[Fe(CN)(6)]1.26H(2)O, KFMHCF-1/2) as the cathode material for PIBs. The Fe-Mn binary synergistic and defect-free effects can inhibit the cell volume change and octahedral slip during the K-ion insertion/extraction process, so that the phase transformation behavior (monoclinic <-> cubic) is effectively inhibited, achieving a zero-strain solid solution mechanism employing Fe and Mn as dual active-sites. Thus, KFMHCF-1/2 contributes the highest initial capacity of 155.3 mAhg(-1) with an energy density of 599.5 Whkg(-1) at 10 mAg(-1) among the reported PBA cathodes, superior rate capability, and cyclic stability over 450 cycles. The assembled K-ion full battery using K deposited on graphite (K@G) as anode also delivers high reversible specific capacity of 131.1 mAhg(-1) at 20 mAg(-1) and ultralong lifespans over 1000 cycles at 50 mAg(-1) with the lowest capacity decay rate of 0.044% per cycle. This work will promote the rapid application of high-energy-density PIBs.
Keyword :
ammonia synthesis ammonia synthesis flow-throughelectrode flow-throughelectrode lamellar electrified membrane lamellar electrified membrane MXene MXene nitrate reduction nitrate reduction sustainable operation sustainable operation
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GB/T 7714 | Yang, Xin , Wei, Guanbao , Cao, Jihui et al. Mxene-Cu Electrified Membranes with Confined Lamellar Channels for the Flow-through Electrochemical Reduction of Nitrate to Ammonia [J]. | ACS SUSTAINABLE CHEMISTRY & ENGINEERING , 2024 , 12 (8) : 3378-3389 . |
MLA | Yang, Xin et al. "Mxene-Cu Electrified Membranes with Confined Lamellar Channels for the Flow-through Electrochemical Reduction of Nitrate to Ammonia" . | ACS SUSTAINABLE CHEMISTRY & ENGINEERING 12 . 8 (2024) : 3378-3389 . |
APA | Yang, Xin , Wei, Guanbao , Cao, Jihui , Ding, Zhengxin , Yuan, Rusheng , Long, Jinlin et al. Mxene-Cu Electrified Membranes with Confined Lamellar Channels for the Flow-through Electrochemical Reduction of Nitrate to Ammonia . | ACS SUSTAINABLE CHEMISTRY & ENGINEERING , 2024 , 12 (8) , 3378-3389 . |
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A 2D Mn-based MOF ([Mn4(PDI)2(DMF)7(H2O)]n (MOF 1)) (H4PDI = 5,5 '-(1,3,6,8-tetraoxo-1,3,6,8-tetrahydrobenzo[lmn][3,8]phenanthroline-2,7-diyl)diisophthalic acid) was synthesized. Visible light excited Mn-PDI unit in MOF 1 oxidizes NaSO2CF3 to generate center dot CF3 radical and enables MOF 1 to exhibit activity for trifluoromethylation of (hetero)arenes under visible light. The unusual stability of MOF 1 in the trifluoromethylation reactions can be attributed to its unique structure, which prevents it from corrosion by acid byproduct. The peeling of MOF 1 to ultrathin nanosheets or partial oxidation of Mn(II) to Mn(III) in MOF 1 led to MOL 1 and NB 1 with significant improved activity for trifluoromethylation reactions, demonstrating the important role of composition and morphology of a catalyst on its performance. The light initiated trifluoromethylation reactions over these Mn-based MOFs was applied to a variety of substrates. This study provides an efficient strategy for synthesis of trifluoromethylated compounds and highlights the potential of MOFs in light initiated organic syntheses.
Keyword :
Acid tolerance Acid tolerance CF 3 radicals CF 3 radicals Mn-based MOF Mn-based MOF Photocatalysis Photocatalysis Trifluoromethylation Trifluoromethylation
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GB/T 7714 | Ma, Xiong-Feng , Wen, Bo , Zhang, Shaohui et al. Stable Mn(II) metal-organic framework for efficient visible light initiated trifluoromethylation reaction [J]. | JOURNAL OF CATALYSIS , 2024 , 436 . |
MLA | Ma, Xiong-Feng et al. "Stable Mn(II) metal-organic framework for efficient visible light initiated trifluoromethylation reaction" . | JOURNAL OF CATALYSIS 436 (2024) . |
APA | Ma, Xiong-Feng , Wen, Bo , Zhang, Shaohui , Wang, Deshun , Wang, Lele , Lin, Huaxiang et al. Stable Mn(II) metal-organic framework for efficient visible light initiated trifluoromethylation reaction . | JOURNAL OF CATALYSIS , 2024 , 436 . |
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