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学者姓名：方元行
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Abstract ：
Achieving intimate interfacial contact between a hydrogen evolution photocatalyst (HEP) and an oxygen evolution photocatalyst (OEP) is crucial for efficient charge carrier transfer, which in turn enhances overall water splitting (OWS) performance. However, traditional metal oxide-based photocatalysts often possess intrinsic limitations. In this study, carbon nitride (CN) with tunable electrostatic properties is employed to form a heterostructure with metal oxides through self-assembly. As such, protonated polymeric CN nanosheets functioned as the HEP, while NiTiO3 nanoparticles served as the OEP, resulting in a photocatalytic system for OWS, exhibiting H-2 and O-2 evolution rates of 35.6 and 17.7 mu mol h(-)(1), respectively. The corresponding apparent quantum yield is 2.7% at an incident wavelength of 365 nm. These results outperform those of individual photocatalysts. This study introduces a universally applicable electrostatic self-assembly strategy for using CN to construct redox-mediator-free heterojunctions, thereby advancing applications in various fields, particularly the hydrogen evolution reaction via photocatalytic OWS.
Keyword ：
electrostatic self-assemblies electrostatic self-assemblies heterojunctions heterojunctions internal electric fields internal electric fields NiTiO3 NiTiO3 overall water splittings overall water splittings
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| GB/T 7714 | Wang, Long , Wu, Haihua , Lin, Yifan et al. Electrostatic Self-Assembly of NiTiO3 on Carbon Nitride as a Photocatalyst for Visible-Light-Driven Overall Water Splitting [J]. | CHEMSUSCHEM , 2025 . |
| MLA | Wang, Long et al. "Electrostatic Self-Assembly of NiTiO3 on Carbon Nitride as a Photocatalyst for Visible-Light-Driven Overall Water Splitting" . | CHEMSUSCHEM (2025) . |
| APA | Wang, Long , Wu, Haihua , Lin, Yifan , Wang, Mingyue , Wang, Zilong , Xing, Wandong et al. Electrostatic Self-Assembly of NiTiO3 on Carbon Nitride as a Photocatalyst for Visible-Light-Driven Overall Water Splitting . | CHEMSUSCHEM , 2025 . |
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Polymeric carbon nitrides (PCNs), usually the melon phase, have been extensively applied as photocatalysts for CO2 reduction; however, their performance is still unsatisfactory. The condensed allotrope, namely, poly(triazine imide) (PTI) with extended conjugation and a crystallized structure, indeed holds more favorable compositional and structural advantages for photocatalytic CO(2)reduction but remains to be fully exploited. Herein, hexagonal prism-shaped PTI crystals were synthesized and developed as a high-performance photocatalyst for CO2 reduction. With Co(bpy)(3) (2+) as a cocatalyst, the PTI crystals exhibit a CO evolution rate of 44 mu mol h(-1) (i.e., 1467 mu mol g(-1) h(-1)) with 93% selectivity, markedly superior to that of the melon counterpart. Moreover, PTI crystals manifest an apparent quantum efficiency of 12.9% at 365 nm, representing the state-of-the-art value by PCN photocatalysts for CO2-to-CO reduction without using noble metals. The surface pyridine N species of PTI are exposed as active sites to dominate CO2 activation and conversion, which, together with the high crystallinity to facilitate charge separation and transport, endows high CO2 reduction efficiency. In situ diffuse reflectance infrared Fourier transform spectroscopy determines the key intermediates during the CO2 reduction reaction and, consequently, constructs the possible reaction mechanism.
Keyword ：
active sites active sites carbon nitride carbon nitride CO2 reduction CO2 reduction photocatalysis photocatalysis poly(triazineimide) poly(triazineimide) pyridine nitrogen pyridine nitrogen
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| GB/T 7714 | Liu, Feng , Deng, Jing , Su, Bo et al. Poly(triazine imide) Crystals for Efficient CO2 Photoreduction: Surface Pyridine Nitrogen Dominates the Performance [J]. | ACS CATALYSIS , 2025 , 15 (2) : 1018-1026 . |
| MLA | Liu, Feng et al. "Poly(triazine imide) Crystals for Efficient CO2 Photoreduction: Surface Pyridine Nitrogen Dominates the Performance" . | ACS CATALYSIS 15 . 2 (2025) : 1018-1026 . |
| APA | Liu, Feng , Deng, Jing , Su, Bo , Peng, Kang-Shun , Liu, Kunlong , Lin, Xiahui et al. Poly(triazine imide) Crystals for Efficient CO2 Photoreduction: Surface Pyridine Nitrogen Dominates the Performance . | ACS CATALYSIS , 2025 , 15 (2) , 1018-1026 . |
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Abstract ：
H2 and O2 evolutions occur simultaneously for conventional particulate photocatalytic overall water splitting (PPOWS), leading to a significant backward reaction and the formation of an explosive H2/O2 gas mixture. This is an issue that must be addressed prior to industrialization of PPOWS. Here, a convenient, cost-effective, and scalable concept is introduced to uncouple hydrogen and oxygen production for PPOWS. Based on this idea, a three-component photocatalyst, Co(5 %)-HPCN/(rGO/Pt), is constructed, consisting of a photoresponsive chip (HPCN), a H2 evolution cocatalyst (rGO/Pt), and a cobalt complex capable of reversibly binding O2 (Co), to achieve the decoupling of PPOWS under alternating UV and visible light irradiations. The asynchronous O2 and H2 evolution strategy have considerable flexibility regarding the photocatalyst structure and light sources suitable for PPOWS.
Keyword ：
carbon nitride chips carbon nitride chips overall water splitting overall water splitting photocatalytic photocatalytic PPOWS decoupling PPOWS decoupling reaction mechanism reaction mechanism
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| GB/T 7714 | Liu, Dan , Xu, Huihui , Shen, Jinni et al. Decoupling H2 and O2 Release in Particulate Photocatalytic Overall Water Splitting Using a Reversible O2 Binder [J]. | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2025 , 64 (9) . |
| MLA | Liu, Dan et al. "Decoupling H2 and O2 Release in Particulate Photocatalytic Overall Water Splitting Using a Reversible O2 Binder" . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 64 . 9 (2025) . |
| APA | Liu, Dan , Xu, Huihui , Shen, Jinni , Wang, Xun , Qiu, Chengwei , Lin, Huaxiang et al. Decoupling H2 and O2 Release in Particulate Photocatalytic Overall Water Splitting Using a Reversible O2 Binder . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2025 , 64 (9) . |
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The indirect anthraquinone method is currently used to produce H2O2, but it leads to high energy consumption and a large amount of chemical waste. Alternatively, water oxidation reactions offer a potential green approach for H2O2 production, although it is constrained by low selectivity. Herein, the functional photoanodes are rationally designed for H2O2 production via photocatalytic water oxidation. Specifically, P/Mo co-doped BiVO4 films are achieved on a conductive glass to serve as the photocatalytic layer, which is coated with an ultrathin amorphous TiO2 film to achieve good stability. Importantly, metal-free P-doped polymeric carbon nitride dots are deposited on the photoanode, acting as the reaction centres. This innovative approach moves away from the traditional reliance on inorganic materials as co-catalysts in order to suppress the thermodynamically favoured O-2 evolution, which, in turn, significantly enhances the selectivity, efficiency and stability of H2O2 production. Consequently, an optimal selectivity of approximate to 64% for H2O2 production is achieved at an applied voltage bias of 1.7 V versus RHE in a 1.0 m KHCO3 solution, achieving a yield of approximate to 34.2 mu mol hr(-1) cm(-2). This research offers a novel strategy for developing photocatalytic films with optimised co-catalysts for a photoanode in photocatalytic H2O2 synthesis.
Keyword ：
BiVO4 BiVO4 H2O2 synthesis H2O2 synthesis photoanode photoanode polymeric carbon nitride dots polymeric carbon nitride dots water oxidation water oxidation
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| GB/T 7714 | Wang, Yankun , Xu, Yuntao , Zhang, Xirui et al. Integrating P-Doped Carbon Nitride Dots as Active Sites on P/Mo Co-Doped BiVO4 Photoanodes Promotes H2O2 Production [J]. | SMALL , 2025 . |
| MLA | Wang, Yankun et al. "Integrating P-Doped Carbon Nitride Dots as Active Sites on P/Mo Co-Doped BiVO4 Photoanodes Promotes H2O2 Production" . | SMALL (2025) . |
| APA | Wang, Yankun , Xu, Yuntao , Zhang, Xirui , Qian, Rong , Chen, Xiong , Chen, Qiao et al. Integrating P-Doped Carbon Nitride Dots as Active Sites on P/Mo Co-Doped BiVO4 Photoanodes Promotes H2O2 Production . | SMALL , 2025 . |
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Heterogeneous photoelectrocatalysis systems have recently seen significant growth in organic transformations, but are limited by the inherent physicochemical properties of electrode materials. To enhance selectivity in these processes, we propose an innovative advancement in the rational design of photoanodes. Specifically, we incorporated cobalt porphyrin co-catalysts with confined Co sites onto bismuth vanadate films as a photoanode. This photoanode significantly enhances the efficacy of styrene epoxidation, achieving selectivity and conversion rates of 90 % and 99 %, respectively. Notably, the reaction utilizes water as the sole oxygen source, operates at room temperature, and is easily scalable for gram-scale synthesis. The developed photoanode demonstrates robust performance across various alkene substrates. Operando characterizations reveal that during the epoxidation reaction, the confined Co sites within the porphyrin structure catalyze the oxidation of H2O to form Co-O*, serving as critical intermediates that facilitate cyclization reactions via one-electron processes. This study introduces an innovative heterogeneous photoelectrocatalysis strategy with customizable active sites tailored for selective catalytic organic transformations.
Keyword ：
Epoxidation Epoxidation Heterogeneous Heterogeneous Photoelectrocatalysis Photoelectrocatalysis Selectivity Selectivity
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| GB/T 7714 | Wu, Haisu , Wang, Yankun , Huang, Meirong et al. Alkene Epoxidation with Water by Confined Active Co Sites on BiVO4 Photoanodes under Visible Light [J]. | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2025 , 64 (7) . |
| MLA | Wu, Haisu et al. "Alkene Epoxidation with Water by Confined Active Co Sites on BiVO4 Photoanodes under Visible Light" . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 64 . 7 (2025) . |
| APA | Wu, Haisu , Wang, Yankun , Huang, Meirong , Cheng, Jiajia , Sa, Baisheng , Fang, Yuanxing et al. Alkene Epoxidation with Water by Confined Active Co Sites on BiVO4 Photoanodes under Visible Light . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2025 , 64 (7) . |
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Mesoporous bioactive glasses (MBGs) are gaining recognition in bone tissue engineering for their osteoblast differentiation-inducing properties and customizable structures. However, the challenge of peri-implantitis has hindered their broader application. To address this, double transition metal TiNbCTx MXene acted as near-infrared (NIR) photothermal agent, has been integrated with MBG nanospheres to develop novel multifunctional TiNbCTx/MBG (TNC/MBG) nanocomposites in this work. The results demonstrate that the TNC/MBG composites feature uniform mesoporous spherical MBG nanoparticles on TiNbCTx nanosheets, boasting a significantly enhanced specific surface area of up to 444.74 m(2) g(-1) and a more negative zeta potential than pristine MBG. Importantly, the TNC/MBG nanocomposites can effectively promote apatite formation, as well as the proliferation and viability of MC3T3-E1 cells. Moreover, it is highlighted that the TNC/MBG nanocomposites display remarkable photothermal conversion efficiency and stability, leading to over 95% antibacterial inhibition rates against both S. aureus and E. coli under NIR irradiation. These findings offer an appealing strategy to develop multifunctional TNC/MBG nanocomposites with enhanced biological activity and robust antibacterial properties, which shows great potential for various biomedical applications.
Keyword ：
antibacterial property antibacterial property biological behavior biological behavior mesoporous bioactive glass mesoporous bioactive glass photothermal conversion performance photothermal conversion performance TiNbCTx MXene TiNbCTx MXene
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| GB/T 7714 | Yan, Siqing , Ma, Qian , Wen, Cuilian et al. Enhanced Biological Behavior and Photothermal Antibacterial Performance of TiNbCTx MXene Modified Mesoporous Bioactive Glass Nanocomposites [J]. | ADVANCED FUNCTIONAL MATERIALS , 2025 . |
| MLA | Yan, Siqing et al. "Enhanced Biological Behavior and Photothermal Antibacterial Performance of TiNbCTx MXene Modified Mesoporous Bioactive Glass Nanocomposites" . | ADVANCED FUNCTIONAL MATERIALS (2025) . |
| APA | Yan, Siqing , Ma, Qian , Wen, Cuilian , Luo, Lijin , Jin, Junhao , Li, Xiong et al. Enhanced Biological Behavior and Photothermal Antibacterial Performance of TiNbCTx MXene Modified Mesoporous Bioactive Glass Nanocomposites . | ADVANCED FUNCTIONAL MATERIALS , 2025 . |
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Highly crystalline carbon nitride polymers have shown great opportunities in overall water photosplitting; however, their mission in light-driven CO2 conversion remains to be explored. In this work, crystalline carbon nitride (CCN) nanosheets of poly triazine imide (PTI) embedded with melon domains are fabricated by KCl/LiCl-mediated polycondensation of dicyandiamide, the surface of which is subsequently deposited with ultrafine WO3 nanoparticles to construct the CCN/WO3 heterostructure with a S-scheme interface. Systematic characterizations have been conducted to reveal the compositions and structures of the S-scheme CCN/WO3 hybrid, featuring strengthened optical capture, enhanced CO2 adsorption and activation, attractive textural properties, as well as spatial separation and directed movement of light-triggered charge carriers. Under mild conditions, the CCN/WO3 catalyst with optimized composition displays a high photocatalytic activity for reducing CO2 to CO in a rate of 23.0 mu mol/hr ( i.e., 2300 mu mol/(hr center dot g)), which is about 7-fold that of pristine CCN, along with a high CO selectivity of 90.6% against H2 formation. Moreover, it also manifests high stability and fine reusability for the CO2 conversion reaction. The CO2 adsorption and conversion processes on the catalyst are monitored by in-situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), identifying the crucial intermediates of CO2 *-, COOH* and CO*, which integrated with the results of performance evaluation proposes the possible CO2 reduction mechanism. (c) 2023 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
Keyword ：
CO 2 reduction CO 2 reduction Crystalline carbon nitride Crystalline carbon nitride Photocatalysis Photocatalysis S-scheme S-scheme WO3 WO3
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| GB/T 7714 | Chen, Gongjie , Zhou, Ziruo , Li, Bifang et al. S-scheme heterojunction of crystalline carbon nitride nanosheets and ultrafine WO3 nanoparticles for photocatalytic CO2 reduction [J]. | JOURNAL OF ENVIRONMENTAL SCIENCES , 2024 , 140 : 103-112 . |
| MLA | Chen, Gongjie et al. "S-scheme heterojunction of crystalline carbon nitride nanosheets and ultrafine WO3 nanoparticles for photocatalytic CO2 reduction" . | JOURNAL OF ENVIRONMENTAL SCIENCES 140 (2024) : 103-112 . |
| APA | Chen, Gongjie , Zhou, Ziruo , Li, Bifang , Lin, Xiahui , Yang, Can , Fang, Yuanxing et al. S-scheme heterojunction of crystalline carbon nitride nanosheets and ultrafine WO3 nanoparticles for photocatalytic CO2 reduction . | JOURNAL OF ENVIRONMENTAL SCIENCES , 2024 , 140 , 103-112 . |
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Sunlight -induced photocatalytic carbon dioxide (CO2) reduction to energy -rich chemicals by metal -free polymeric carbon nitride (CN) semiconductor is a promising tactic for sustained solar fuel production. However, the reaction efficiency of CO2 photoreduction is restrained seriously by the rapid recombination of photogenerated carriers on CN polymer. Herein, we incorporate 2-aminopyridine molecule with strong electron -withdrawing group into the skeleton edge of CN layers through a facile one -pot thermal polymerization strategy using urea as the precursor, which renders a modified carbon nitride (ACN) with extended optical harvesting, abundant nitrogen defects and ultrathin nanosheet structure. Consequently, the ACN photocatalyst with desirable structural features attains enhanced separation and migration of photoexcited charge carriers. Under visible light irradiation with Co(bpy)32+ as a cocatalyst, the optimized ACN sample manifests a high CO2 deoxygnative reduction activity and high stability, providing a CO yielding rate of 17 mu mol h-1, which is significantly higher than that of pristine CN. The key intermediates engaged in CO2 photoreduction reaction are determined by the in situ diffuse reflectance infrared Fourier transform spectroscopy, which sponsors the construction of the possible photocatalytic CO2 reduction mechanism on ACN nanosheets.
Keyword ：
Carbon nitride Carbon nitride CO2 reduction CO2 reduction Nanosheets Nanosheets Nitrogen defects Nitrogen defects Photocatalysis Photocatalysis
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| GB/T 7714 | Zhou, Ziruo , Guo, Wenyu , Yang, Tingyu et al. Defect and nanostructure engineering of polymeric carbon nitride for visible-light-driven CO2 reduction [J]. | CHINESE JOURNAL OF STRUCTURAL CHEMISTRY , 2024 , 43 (3) . |
| MLA | Zhou, Ziruo et al. "Defect and nanostructure engineering of polymeric carbon nitride for visible-light-driven CO2 reduction" . | CHINESE JOURNAL OF STRUCTURAL CHEMISTRY 43 . 3 (2024) . |
| APA | Zhou, Ziruo , Guo, Wenyu , Yang, Tingyu , Zheng, Dandan , Fang, Yuanxing , Lin, Xiahui et al. Defect and nanostructure engineering of polymeric carbon nitride for visible-light-driven CO2 reduction . | CHINESE JOURNAL OF STRUCTURAL CHEMISTRY , 2024 , 43 (3) . |
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Hydrogen peroxide (H2O2) plays a crucial role in various applications, such as green oxidation processes and the production of high-quality fuels. Currently, H2O2 is primarily manufactured using the indirect anthraquinone method, known for its significant energy consumption and the generation of intensive by-products. Extensive research has been conducted on the photocatalytic production of H(2)O(2)via oxygen reduction reaction (ORR), with polymeric carbon nitride (PCN) emerging as a promising catalyst for this conversion. This review article is organized around two approaches. The first part main consists of the chemical optimization of the PCN structure, while the second focuses on the physical integration of PCN with other functional materials. The objective is to clarify the correlation between the physicochemical properties of PCN photocatalysts and their effectiveness in H2O2 production. Through a thorough review and analysis of the findings, this article seeks to stimulate new insights and achievements, not only in the domain of H2O2 production via ORR but also in other redox reactions.
Keyword ：
H2O2 H2O2 Hybrid structure Hybrid structure Oxygen reduction reaction Oxygen reduction reaction Photocatalysis Photocatalysis Polymeric carbon nitride Polymeric carbon nitride
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| GB/T 7714 | Zheng, Dandan , Wu, Yahan , Yang, Xintuo et al. Developing Polymeric Carbon Nitrides for Photocatalytic H2O2 Production [J]. | CHEMSUSCHEM , 2024 , 17 (20) . |
| MLA | Zheng, Dandan et al. "Developing Polymeric Carbon Nitrides for Photocatalytic H2O2 Production" . | CHEMSUSCHEM 17 . 20 (2024) . |
| APA | Zheng, Dandan , Wu, Yahan , Yang, Xintuo , Wang, Sibo , Fang, Yuanxing . Developing Polymeric Carbon Nitrides for Photocatalytic H2O2 Production . | CHEMSUSCHEM , 2024 , 17 (20) . |
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The direct activation of methane under mild condition to achieve highly selective of oxygenates is a challenging project. In this study, a well dispersed silver supported ZnTiO 3 catalyst was prepared to achieve selective preparation of methanol from methane and water under mild condition. X-ray diffraction, transmission electron microscopy and X-ray photoelectron spectroscopy characterizations demonstrate that silver species are uniformly dispersed on ZnTiO 3 surface in the form of metallic silver nanoparticles. The photoelectric characterizations reveal that the addition of silver species enhances light absorption and promotes charge separation of the catalysts. Under the reaction conditions of 50 degrees C and 3 MPa, the methanol is obtained as the only liquid product over the designed Ag/ZnTiO 3 catalyst under light irradiation. In this photocatalytic process, the holes generated by ZnTiO 3 activate water to produce intermediate center dot OH, which further reacts with methane to synthesize methanol. The silver species as co -catalysts extend the light absorption range of ZnTiO 3 as well as promote charge separation. (c) 2024 Chinese Society of Rare Earths. Published by Elsevier B.V. All rights reserved.
Keyword ：
Methane oxidation Methane oxidation Methanol Methanol Photocatalytic Photocatalytic Silver Silver Zinc titanate Zinc titanate
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| GB/T 7714 | Gan, Yuyan , Huang, Jinbi , Lv, Qian et al. Photocatalytic oxidation of methane to methanol over zinc titanate supported silver catalysts [J]. | JOURNAL OF RARE EARTHS , 2024 , 42 (5) : 899-906 . |
| MLA | Gan, Yuyan et al. "Photocatalytic oxidation of methane to methanol over zinc titanate supported silver catalysts" . | JOURNAL OF RARE EARTHS 42 . 5 (2024) : 899-906 . |
| APA | Gan, Yuyan , Huang, Jinbi , Lv, Qian , Li, Yanru , Wu, Lizhi , Tang, Yu et al. Photocatalytic oxidation of methane to methanol over zinc titanate supported silver catalysts . | JOURNAL OF RARE EARTHS , 2024 , 42 (5) , 899-906 . |
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