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学者姓名:蔡平伟
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The escalating crisis of polyethylene terephthalate (PET) plastic waste is constrained by the high energy consumption and high cost of recycling methods. Here, we propose a “one stone, two birds” strategy based on an all-inorganic polyoxoniobate (PONb) framework, which not only serves as an adsorbent for selectively capturing trace uranyl ions from uranium-containing wastewater with high removal rate of ∼98.5%, but also, when uranyl ions are anchored within the framework, acts as a photocatalyst capable of efficiently oxidizing and degrading PET plastic waste with 92.3% isolated yield of value-added terephthalic acid (TPA). Notably, trace uranium uptake achieves extremely high catalytic activity, with a maximum turnover frequency (TOF) value exceeding that of homogeneous uranyl nitrate by 160 times, while maintaining yield over multiple cycles. The efficient catalytic activity stems from the coupling of hydrogen atom transfer (HAT) and single electron transfer (SET) processes involving highly oxidizing excited-state uranyl. This work provides a low-energy and low-cost method that simultaneously addresses the dual pollution challenges of uranium-containing wastewater and PET plastic waste, recovers uranium resources, and obtains value-added chemicals, demonstrating potential to play a key role in advancing circular economy and sustainable development. © 2025 Wiley-VCH GmbH.
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PET degradation PET degradation photocatalysis photocatalysis polyoxometalate polyoxometalate polyoxoniobate polyoxoniobate uranium uptake uranium uptake
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GB/T 7714 | Liu, Y.-X. , Jia, L. , Li, Y.-R. et al. Bridging Uranium Uptake and PET Plastics Degradation Within an All-Inorganic Polyoxoniobate Framework [J]. | Advanced Functional Materials , 2025 . |
MLA | Liu, Y.-X. et al. "Bridging Uranium Uptake and PET Plastics Degradation Within an All-Inorganic Polyoxoniobate Framework" . | Advanced Functional Materials (2025) . |
APA | Liu, Y.-X. , Jia, L. , Li, Y.-R. , Cai, P.-W. , Ou, M.-R. , Sun, C. et al. Bridging Uranium Uptake and PET Plastics Degradation Within an All-Inorganic Polyoxoniobate Framework . | Advanced Functional Materials , 2025 . |
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The incorporation of 3d-5p heterometallic clusters into polyoxotungstates not only enables the construction of novel and intriguing structures but also enhances the resultant materials with exceptional properties. Here, we present an unique strontium-bridged purely inorganic two-dimensional layered polyoxotungstate, H7Sr2.5(H2O)15.5[Ni7Sb6O9(OH)6(B-alpha-SiW9O34)2]& sdot;25.5H2O (1), which is composed of a sandwich-type thirteennuclear Ni-Sb heterometallic cluster {Ni7Sb6} and two {B-alpha-SiW9O34} units. Notably, compound 1 undergoes a single-crystal-to-single-crystal transformation, accompanied by the partial substitution of Sr2+ ions with Co2+ ions, resulting in a transition from a two-dimensional to a three-dimensional structure while maintaining excellent crystallinity. This process provides an opportunity to elucidate the ions exchange mechanism at the atomic level. Furthermore, electrochemical impedance studies reveal that 1 exhibits good proton conductivity, reaching 1.40 x 10-3 S cm- 1, under conditions of 85 degrees C and 98 % relative humidity.
Keyword :
3d-5p heterometallic cluster 3d-5p heterometallic cluster Ion exchange Ion exchange Polyoxotungstates Polyoxotungstates Proton conduction Proton conduction
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GB/T 7714 | Chen, Yi , Guo, Zheng-Wei , Li, Xin-Xiong et al. A nickel-antimony cluster-substituted polyoxotungstate-based all-inorganic two-dimensional layered material: synthesis, structure, and properties [J]. | INORGANIC CHEMISTRY COMMUNICATIONS , 2025 , 179 . |
MLA | Chen, Yi et al. "A nickel-antimony cluster-substituted polyoxotungstate-based all-inorganic two-dimensional layered material: synthesis, structure, and properties" . | INORGANIC CHEMISTRY COMMUNICATIONS 179 (2025) . |
APA | Chen, Yi , Guo, Zheng-Wei , Li, Xin-Xiong , Sun, Yan-Qiong , Cai, Ping-Wei , Zheng, Shou-Tian . A nickel-antimony cluster-substituted polyoxotungstate-based all-inorganic two-dimensional layered material: synthesis, structure, and properties . | INORGANIC CHEMISTRY COMMUNICATIONS , 2025 , 179 . |
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A series of novel cage-like transition-metal (TM) incorporated heteropolyoxoniobates {TM4Nb64O200} (1-TM, TM = Ni, Cu, Mn, Cd) were hydrothermally synthesized and isolated as salts of mixed K+ and [CN3H6]+. As a result of transition metal ions incorporation, the charge distribution, redox potential, and active sites of the formed polyoxoniobates (PONbs) are variants, leading to differences in their electrocatalytic hydrogen evolution reaction (HER). Among these compounds, 1-Ni showed the best HER activity with an overpotential of 560 mV at 10 mA cm-2 and a minimum Tafel slope of 405.8 mV dec-1.
Keyword :
Cage-like Cage-like Hydrogen evolution reaction Hydrogen evolution reaction Polyoxometalate Polyoxometalate Transition metal substitution Transition metal substitution
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GB/T 7714 | Wu, Lan , Hu, Fen , Sun, Rong-Zhi et al. Development of cage-like transition-metal incorporated polyoxoniobates for hydrogen evolution reaction electrocatalysts [J]. | JOURNAL OF SOLID STATE CHEMISTRY , 2025 , 345 . |
MLA | Wu, Lan et al. "Development of cage-like transition-metal incorporated polyoxoniobates for hydrogen evolution reaction electrocatalysts" . | JOURNAL OF SOLID STATE CHEMISTRY 345 (2025) . |
APA | Wu, Lan , Hu, Fen , Sun, Rong-Zhi , Xia, Wen-Jun , Zeng, Qing-Xin , Cai, Ping-Wei et al. Development of cage-like transition-metal incorporated polyoxoniobates for hydrogen evolution reaction electrocatalysts . | JOURNAL OF SOLID STATE CHEMISTRY , 2025 , 345 . |
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Herein, cobalt ammine complexes are combined with alkali-resistant polyoxoniobates (PONbs) at the molecular level to obtain two new organic-inorganic hybrid Co-containing PONbs with the same polyanions but different Co contents. The Co-containing PONb with higher Co content exhibits superior hydrogen evolution reaction (HER) activity under highly alkaline conditions, which is better than the results for the similar Cu-containing PONb, highlighting the critical role of cobalt in improving HER performance. This study provides a new insight into the relationship between the structural properties of metal complexes during electrocatalysis.
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GB/T 7714 | Chen, Chun-Xia , Duan, Shui-Lin , Zhang, Xiao-Yue et al. Organic-inorganic hybrid Co-containing polyoxoniobates as hydrogen evolution catalysts in alkaline media [J]. | DALTON TRANSACTIONS , 2025 , 54 (9) : 3591-3596 . |
MLA | Chen, Chun-Xia et al. "Organic-inorganic hybrid Co-containing polyoxoniobates as hydrogen evolution catalysts in alkaline media" . | DALTON TRANSACTIONS 54 . 9 (2025) : 3591-3596 . |
APA | Chen, Chun-Xia , Duan, Shui-Lin , Zhang, Xiao-Yue , Sun, Rong-Zhi , Cai, Ping-Wei , Sun, Cai et al. Organic-inorganic hybrid Co-containing polyoxoniobates as hydrogen evolution catalysts in alkaline media . | DALTON TRANSACTIONS , 2025 , 54 (9) , 3591-3596 . |
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Electrochemical carbon dioxide reduction to multi-carbon (C2+) products presents a significant opportunity for converting greenhouse gases into valuable fuels and feedstocks. The development of highly active and stable catalysts remains a critical challenge. In this study, we report the design and synthesis of cyclodextrin-modified Cu/Cu2O electrocatalysts, which exhibit remarkable efficiency in driving the CO2 electroreduction process towards C2+ products. Our optimized catalyst achieves a C2+ Faradaic efficiency exceeding 50 % at a high current density of over 200 mA cm(-2). Experimental findings, supported by density functional theory (DFT) calculations, reveal that cyclodextrin plays a dual role in stabilizing Cu+ and increasing the surface density of hydroxyl radicals. This dual function greatly benefits for enhancing *CO intermediate adsorption and promotes *CHO formation, thereby facilitating the crucial dimerization step for the formation of C2+ products. This work provides valuable insights into the development of highly active and selective electrocatalysts by carefully tuning the local catalytic environment, potentially opening new avenues for functionalizing electrocatalysts for future research in this area.
Keyword :
C2+ Selectivity C2+ Selectivity Carbon dioxide reduction Carbon dioxide reduction *CO adsorption *CO adsorption Cu/Cu2O Cu/Cu2O Cyclodextrin-modification Cyclodextrin-modification
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GB/T 7714 | Cai, Pingwei , Weng, Wanting , Han, Yue et al. Boosting multi-carbon products selectivity of carbon dioxide reduction via bifunctional cyclodextrin-modification on copper/copper(I) oxide electrocatalysts [J]. | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2025 , 680 : 453-458 . |
MLA | Cai, Pingwei et al. "Boosting multi-carbon products selectivity of carbon dioxide reduction via bifunctional cyclodextrin-modification on copper/copper(I) oxide electrocatalysts" . | JOURNAL OF COLLOID AND INTERFACE SCIENCE 680 (2025) : 453-458 . |
APA | Cai, Pingwei , Weng, Wanting , Han, Yue , Li, Xin , Lu, Zhiwen , Wen, Zhenhai . Boosting multi-carbon products selectivity of carbon dioxide reduction via bifunctional cyclodextrin-modification on copper/copper(I) oxide electrocatalysts . | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2025 , 680 , 453-458 . |
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Superstructures assembled from nanoscale polyoxometalates (POMs) attract considerable interest due to their well-defined architectures and outstanding physicochemical properties. However, the targeted synthesis of self-assembled POM-based superstructures with high-efficiency electrocatalytic performance remains a significant challenge. Herein, we report the rational design and construction of three POM-based superstructures with ultrathin graphene-like morphologies and well-organized frameworks via a simple self-assembled method, in which transition metals (TMs) bridge POMs into graphene-like planes, while cetyltrimethylammonium bromide (CTAB) serves as an intercalation agent, endowing the structures with high surface area and enhanced electronic conductivity. Among the resulting materials (denote as POM-CTAB-TM, TM═Co, Ni, or Cu), POM-CTAB-Co exhibits the highest catalytic activity toward oxygen evolution reaction (OER), achieving a low overpotential of 292 mV at a current density of 10 mA cm−2. In situ electrochemical spectroscopy and theoretical calculations underscore that the Co atoms within the POM serve as active sites and facilitate the rate-determining step of *OOH formation. Moreover, an anion exchange membrane water electrolyzer employing POM-CTAB-Co as the anode and Pt/C as the cathode demonstrates exceptional performance, delivering a current density of 2 A cm−2 at a cell voltage of 2.247 V, along with remarkable durability exceeding 2000 h at an industrial-grade current density of 500 mA cm−2. This study develops a simple and efficient method for synthesizing supramolecular POM-based nanosheets as OER electrocatalysts. © 2025 Wiley-VCH GmbH.
Keyword :
AEM water electrolyzer AEM water electrolyzer Graphene-like nanosheets Graphene-like nanosheets Oxygen evolution reaction Oxygen evolution reaction Polyoxometalate superstructure Polyoxometalate superstructure Self-assembly Self-assembly
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GB/T 7714 | Sun, R.-Z. , Ma, X. , Chen, K. et al. Self-Assembled Polyoxometalate Supramolecular Nanosheets for Efficient and Durable Water Oxidation [J]. | Angewandte Chemie - International Edition , 2025 . |
MLA | Sun, R.-Z. et al. "Self-Assembled Polyoxometalate Supramolecular Nanosheets for Efficient and Durable Water Oxidation" . | Angewandte Chemie - International Edition (2025) . |
APA | Sun, R.-Z. , Ma, X. , Chen, K. , Yang, J.-B. , Liu, Y.-X. , Li, X.-X. et al. Self-Assembled Polyoxometalate Supramolecular Nanosheets for Efficient and Durable Water Oxidation . | Angewandte Chemie - International Edition , 2025 . |
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Niobium oxides are considered as promising anode materials for lithium-ion batteries (LIBs) due to their excellent rate-performance. However, the practical application is hindered by their limited specific capacity. In this work, we report the first example of an all-inorganic two-dimensional (2D) niobate framework as anode material for LIBs. The title compound is based on antimony-linked bivanadyl-capped alpha-Keggin polyoxoniobates as secondary building units. The compound undergoes a unique single-crystal-to-single-crystal (SCSC) transformation triggered by formic acid which results in the migration of a {VO} unit into the framework interlayer. This results in a 34% increase of the specific capacity, reaching 519 mAh g-1 at 0.1 A g-1, thereby surpassing most Nb-based LIB anode materials. Experimental and theoretical calculations reveal that the SCSC transformation exposes more Li-binding sites in the framework, and reduces the interlayer Li-ion diffusion barrier, leading to a capacity increase. This work presents the first example of a SCSC transformation leading to enhanced LIB performance and offers atomic-level insights into the design of advanced LIB anode materials.
Keyword :
Capacity enhancement Capacity enhancement Li-Ion battery Li-Ion battery Polyoxometalate Polyoxometalate Polyoxoniobate Polyoxoniobate SCSC Transformation SCSC Transformation
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GB/T 7714 | Sun, Cai , Chen, Jian-Ping , Wu, Yan-Lan et al. Single-Crystal-to-Single-Crystal Transformation in a Thermally Stable All-Inorganic Polyoxoniobate Framework Boosts Lithium Ion Battery Anode Performance [J]. | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2025 , 64 (31) . |
MLA | Sun, Cai et al. "Single-Crystal-to-Single-Crystal Transformation in a Thermally Stable All-Inorganic Polyoxoniobate Framework Boosts Lithium Ion Battery Anode Performance" . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 64 . 31 (2025) . |
APA | Sun, Cai , Chen, Jian-Ping , Wu, Yan-Lan , Li, Yi-Ying , Li, Xin-Xiong , Cai, Ping-Wei et al. Single-Crystal-to-Single-Crystal Transformation in a Thermally Stable All-Inorganic Polyoxoniobate Framework Boosts Lithium Ion Battery Anode Performance . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2025 , 64 (31) . |
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In this work, a novel organodiphosphate-containing inorganic-organic hybrid polyoxoniobate (PONb) ring {(PO3CH2CH2PO3H)(4)Nb8O16}(4-) (Nb8P8) has been achieved by a one-pot hydrothermal method. The ring is constructed from a tetragonal {Nb8O36} motif and four {PO3CH2CH2PO3H} ligands. Interestingly, Nb8P8 can be joined together via K-H2O clusters {K-2(H2O)(4)(OH)(2)} to form one-dimensional chains {[K-2(H2O)(4)(OH)(2)]Nb8P8}(n) and further linked by {Cu(en)(2)}(2+) (en = ethylenediamine) complexes, resulting in a three-dimensional supramolecular framework {[Cu(en)(2)](2)[K-2(H2O)(4)(OH)(2)]Nb8P8}3enH2O (1). 1 exhibits good chemical and thermal stability and has a high water vapor adsorption capacity of <= 224 cm(3) g(-1) (22.71 molmol(-1)) at 298 K, outperforming most of the known polyoxometalate-based materials. Impedance measurements prove that 1 can transfer protons with moderate conductivity. This study not only contributes to the structural diversity of organodiphosphate-containing PONbs and PONb rings but also provides a reference for the development of PONb-based materials with unique performance.
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GB/T 7714 | Cong, Yu-Chen , Xiao, Hui-Ping , Cai, Ping-Wei et al. An Organodiphosphate-Containing Polyoxoniobate Ring and Its Assembly into a Three-Dimensional Framework through Hydrogen Bonding [J]. | INORGANIC CHEMISTRY , 2024 , 63 (20) : 9204-9211 . |
MLA | Cong, Yu-Chen et al. "An Organodiphosphate-Containing Polyoxoniobate Ring and Its Assembly into a Three-Dimensional Framework through Hydrogen Bonding" . | INORGANIC CHEMISTRY 63 . 20 (2024) : 9204-9211 . |
APA | Cong, Yu-Chen , Xiao, Hui-Ping , Cai, Ping-Wei , Sun, Cai , Sun, Yan-Qiong , Qi, Ming-Qiang et al. An Organodiphosphate-Containing Polyoxoniobate Ring and Its Assembly into a Three-Dimensional Framework through Hydrogen Bonding . | INORGANIC CHEMISTRY , 2024 , 63 (20) , 9204-9211 . |
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Rechargeable Zn-air batteries (ZABs) are considered highly competitive technologies for meeting the energy demands of the next generation, whether for energy storage or portable power. However, their practical application is hindered by critical challenges such as low voltage, CO2 poisoning at the cathode, low power density, and poor charging efficiency Herein, a rechargeable hybrid alkali/acid Zn-air battery (h-RZAB) that effectively separates the discharge process in an acidic environment from the charging process in an alkaline environment, utilizing oxygen reduction reaction (ORR) and glycerol oxidation reaction (GOR) respectively is reported. Compared to previously reported ZABs, this proof-of-concept device demonstrates impressive performance, exhibiting a high power density of 562.7 mW cm-2 and a high operating voltage during discharging. Moreover, the battery requires a significantly reduced charging voltage due to the concurrent utilization of biomass-derived glycerol, resulting in practical and cost-effective advantages. The decoupled system offers great flexibility for intermittently generated renewable power sources and presents cost advantages over traditional ZABs. As a result, this technology holds significant promise in opening avenues for the future development of renewable energy-compatible electrochemical devices. A rechargeable hybrid Zn-air battery (h-RZAB) is proposed by decoupling charging and discharging processes in separate alkaline and acidic electrolytes. which demonstrates a remarkable power density of 562.7 mW cm-2 and maintains a high operating voltage during discharging. Additionally, the battery requires a significantly reduced charging voltage due to the concurrent utilization of biomass-derived glycerol. image
Keyword :
alkali/acid electrolytes alkali/acid electrolytes glycerol oxidation reaction glycerol oxidation reaction high power density high power density hybrid Zn-air battery hybrid Zn-air battery reduced charging voltage reduced charging voltage
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GB/T 7714 | Yin, Ximeng , Sun, Wei , Chen, Kai et al. High-Power-Density Rechargeable Hybrid Alkali/Acid Zn-Air Battery Performance Through Value-Added Conversion Charging [J]. | ADVANCED SCIENCE , 2024 , 11 (23) . |
MLA | Yin, Ximeng et al. "High-Power-Density Rechargeable Hybrid Alkali/Acid Zn-Air Battery Performance Through Value-Added Conversion Charging" . | ADVANCED SCIENCE 11 . 23 (2024) . |
APA | Yin, Ximeng , Sun, Wei , Chen, Kai , Lu, Zhiwen , Chen, Junxiang , Cai, Pingwei et al. High-Power-Density Rechargeable Hybrid Alkali/Acid Zn-Air Battery Performance Through Value-Added Conversion Charging . | ADVANCED SCIENCE , 2024 , 11 (23) . |
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Efficient electrocatalysts for the oxygen evolution reaction (OER) are paramount to the development of electrochemical devices for clean energy and fuel conversion. However, due to the complicated structures of heterogeneous electrocatalysts, it is a great challenge to elucidate the intrinsic activity of the catalytic sites on their surfaces. In this work, we report the synthesis and characterisation of a 9-Co(ii)-containing trimetric cyclic polyoxogermanotungstate cluster, K9Na3H7[Co9(H2O)6(OH)3(SeO3)2(B-alpha-GeW9O34)3]39H2O (Co9-POT), which exhibits distinct physicochemical properties and a well-defined single-crystal structure. The triangular nonacobalt(ii)-oxo cluster {Co9(H2O)6(OH)3(SeO3)2} ({Co9Se2}) in Co9-POT consists of three identical quasi-cubane {Co3O4} subunits capped by two SeO32- anions. Co9-POT exhibits electrocatalytic activity for the alkaline OER, with a turnover frequency (TOF) of the catalytically active site Co of 0.18 s-1 at an overpotential of 400 mV. In situ operational Raman and electrochemical impedance spectroscopy techniques explicitly capture the dynamic evolution of the OER process. This work provides insights into the structure-performance relationship in the OER process and the design of electrocatalysts with high atomic activity. A structurally well-defined 9-Co(ii)-containing trimetric cyclic polyoxogermanotungstate, K9Na3H7[Co9(H2O)6(OH)3(SeO3)2(B-alpha-GeW9O34)3]39H2O (Co9-POT), exhibits electrocatalytic activity for the oxygen evolution reaction (OER) in alkaline media.
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GB/T 7714 | Li, Da-Huan , Jia, Lei , Liu, Yi-Xin et al. A Co-containing polyoxogermanotungstate for alkaline electrocatalytic water oxidation [J]. | INORGANIC CHEMISTRY FRONTIERS , 2024 , 11 (20) : 7049-7057 . |
MLA | Li, Da-Huan et al. "A Co-containing polyoxogermanotungstate for alkaline electrocatalytic water oxidation" . | INORGANIC CHEMISTRY FRONTIERS 11 . 20 (2024) : 7049-7057 . |
APA | Li, Da-Huan , Jia, Lei , Liu, Yi-Xin , Sun, Cai , Li, Xin-Xiong , Cai, Ping-Wei et al. A Co-containing polyoxogermanotungstate for alkaline electrocatalytic water oxidation . | INORGANIC CHEMISTRY FRONTIERS , 2024 , 11 (20) , 7049-7057 . |
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