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学者姓名：黄美榕
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Abstract ：
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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The application of smart devices and artificial intelligence (AI) technologies has led to an increase in electromagnetic interference (EMI) issues. Compared with the traditional metal-based EMI shielding materials, lighter and more efficient polymer-based EMI shielding materials have a broader application prospect. In this work, we utilized electrospinning and calcination techniques to synthesize Fe3O4 nanofibers and employed a layer-by-layer assembly method to create a Ti3C2Tx MXene/Fe3O4/carbon fiber fabric/waterborne polyurethane (Ti3C2Tx MXene/Fe3O4/CFf/WPU) composite fabric. Our findings reveal that this composite fabric possesses superior EMI shielding capabilities. Specifically, the FMC12.5-5 composite material, which contains 12.5 wt % Fe3O4 and 5 wt % Ti3C2Tx, demonstrates remarkable electromagnetic interference (EMI) shielding effectiveness (SE) (up to 43.6 dB) at a mere 0.4 mm thickness with a low MXene content. Meanwhile, the fabric achieves a significant anisotropic thermal conductivity of up to 0.46 W/(m K), fulfilling the in-plane thermal conductivity requirement. Additionally, the sandwich-structured composite exhibits excellent mechanical performance (Young's modulus is up to 113.5 MPa and tensile strength reaches 15.7 MPa) and is flexible enough to endure repeated bending, folding, and shaping. It maintains a reliable electrothermal conversion capability, achieving temperatures of up to 106 degrees C at only 2.5 V. This study has expanded the exploration of enhanced electromagnetic interference (EMI) shielding and electrothermal conversion capabilities.
Keyword ：
electromagnetic interference shielding electromagnetic interference shielding Fe3O4 Fe3O4 MXene MXene sandwich composite fabrics sandwich composite fabrics thermal management thermal management
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| GB/T 7714 | Huang, Meirong , Huang, Ying , Yang, Hui et al. Ti3C2Tx MXene/Fe3O4/Carbon Fiber Fabric/Water Polyurethane Composite Fabrics for Electromagnetic Interference Shielding and Thermal Management [J]. | ACS APPLIED NANO MATERIALS , 2024 . |
| MLA | Huang, Meirong et al. "Ti3C2Tx MXene/Fe3O4/Carbon Fiber Fabric/Water Polyurethane Composite Fabrics for Electromagnetic Interference Shielding and Thermal Management" . | ACS APPLIED NANO MATERIALS (2024) . |
| APA | Huang, Meirong , Huang, Ying , Yang, Hui , Li, Wenmu . Ti3C2Tx MXene/Fe3O4/Carbon Fiber Fabric/Water Polyurethane Composite Fabrics for Electromagnetic Interference Shielding and Thermal Management . | ACS APPLIED NANO MATERIALS , 2024 . |
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Abstract ：
Semihydrogenation is a crucial industrial process. Noble metals such as Pd have been extensively studied in semihydrogenation reactions, owing to their unique catalytic activity toward hydrogen activation. However, the overhydrogenation of alkenes to alkanes often happens due to the rather strong adsorption of alkenes on Pd active phases. Herein, we demonstrate that the incorporation of Pd active phases as single-atom sites in perovskite lattices such as SrTiO3 can greatly alternate the electronic structure and coordination environment of Pd active phases to facilitate the desorption of alkenes rather than further hydrogenation. Furthermore, the incorporated Pd sites can be well stabilized without sintering by a strong host-guest interaction with SrTiO3 during the activation of H species in hydrogenation reactions. As a result, the Pd incorporated SrTiO3 (Pd-SrTiO3) exhibits an excellent time-independent selectivity (>99.9 %) and robust durability for the photocatalytic semihydrogenation of phenylacetylene to styrene. This strategy based on incorporation of active phases in perovskite lattices will have broad implications in the development of high-performance photocatalysts for selective hydrogenation reactions.
Keyword ：
Metal-substituted perovskites Metal-substituted perovskites Pd single sites Pd single sites Photocatalysis Photocatalysis Semihydrogenation Semihydrogenation SrTiO3 SrTiO3
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| GB/T 7714 | Yang, Baoying , Liu, Kunlong , Ma, Yuhui et al. Incorporation of Pd Single-Atom Sites in Perovskite with an Excellent Selectivity toward Photocatalytic Semihydrogenation of Alkynes [J]. | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2024 , 63 (42) . |
| MLA | Yang, Baoying et al. "Incorporation of Pd Single-Atom Sites in Perovskite with an Excellent Selectivity toward Photocatalytic Semihydrogenation of Alkynes" . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 63 . 42 (2024) . |
| APA | Yang, Baoying , Liu, Kunlong , Ma, Yuhui , Ma, Jian-Jie , Chen, Yi-Yu , Huang, Meirong et al. Incorporation of Pd Single-Atom Sites in Perovskite with an Excellent Selectivity toward Photocatalytic Semihydrogenation of Alkynes . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2024 , 63 (42) . |
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A promising strategy to enhance exciton dissociation and charge separation in phenolic-polymer-based photocatalysts is the generation and utilization of benzenoid-quinoid donor-acceptor (D-A) couples inside the phenolic resin frameworks. However, there are often more donors than acceptors in phenolic resin due to the sluggish kinetics of in situ oxidation of phenols to quinoid methides, leading to a mismatched D/A ratio. Herein, we report a well-cross-linked phenolic resin with a unity D/A ratio synthesized by using phloroglucinol as a building block for condensation with formaldehyde. The higher electron density on the aromatic ring not only facilitates the in situ oxidation of phloroglucinols to quinoid methides, forming equivalent D-A couples, but also lowers the energy barrier for the condensation reaction, resulting in a highly cross-linked framework with a well-developed pi-conjugated electronic structure. The phloroglucinol-formaldehyde resin product demonstrates significantly improved photocatalytic performance in the selective oxidation of methyl phenyl sulfide and the oxidative coupling of benzylamine. Our approach shows the potential of photocatalytic phenolic resins for solar-induced chemical conversion.
Keyword ：
aerobic oxidation reactions aerobic oxidation reactions electron donor-acceptor architecture electron donor-acceptor architecture phenolic resin phenolic resin photocatalysis photocatalysis pi-conjugatedpolymer pi-conjugatedpolymer
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| GB/T 7714 | Li, Meng , Huang, Meirong , Lin, Zheng et al. Phenolic Resin with an Optimized Donor-Acceptor Architecture for Photocatalytic Aerobic Oxidation [J]. | ACS CATALYSIS , 2024 , 14 (23) : 17622-17632 . |
| MLA | Li, Meng et al. "Phenolic Resin with an Optimized Donor-Acceptor Architecture for Photocatalytic Aerobic Oxidation" . | ACS CATALYSIS 14 . 23 (2024) : 17622-17632 . |
| APA | Li, Meng , Huang, Meirong , Lin, Zheng , Hou, Yidong , Anpo, Masakazu , Yu, Jimmy C. et al. Phenolic Resin with an Optimized Donor-Acceptor Architecture for Photocatalytic Aerobic Oxidation . | ACS CATALYSIS , 2024 , 14 (23) , 17622-17632 . |
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Pt-based catalysts play a crucial role in the catalytic combustion of benzene. Previous studies have highlighted the significance of metal Pt atoms as the active phase in benzene combustion, while oxidized Pt sites exhibit lower activity. In practical catalysts synthesized through wet chemical methods, a range of metal species is present, including highly dispersed oxidized metal atoms, small oxidized metal clusters, and metal nanoparticles. This paper explores an effective strategy to enhance metal utilization and develop high-performance platinum-based catalysts for benzene catalytic combustion by introducing alkali metals. This approach transforms low-activity oxidized metal atoms and small oxidized metal clusters into active small metal nanoparticles. The introduction of K-O groups displaces Pt from oxygen vacancy trapping sites on antimony-doped tin oxide (ATO) support, enhancing Pt mobility and converting them into active metallic Pt nanoparticles, ultimately improving benzene combustion. These findings highlight the role of alkali metals in promoting catalytic activity and provide insights for designing high-performance noble-metal-based catalysts.
Keyword ：
Alkali-promoted catalysts Alkali-promoted catalysts Benzene combustion Benzene combustion Catalytic activity Catalytic activity Langmuir-Hinshelwood mechanism Langmuir-Hinshelwood mechanism Platinum/antimony-doped tin oxide (ATO) Platinum/antimony-doped tin oxide (ATO)
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| GB/T 7714 | Zhou, Qiqi , Huang, Zhiwei , Huang, Meirong et al. Revitalizing platinum: Alkali-promoted formation of active metallic nanoparticles from inert Pt entities for enhanced benzene combustion [J]. | APPLIED SURFACE SCIENCE , 2023 , 642 . |
| MLA | Zhou, Qiqi et al. "Revitalizing platinum: Alkali-promoted formation of active metallic nanoparticles from inert Pt entities for enhanced benzene combustion" . | APPLIED SURFACE SCIENCE 642 (2023) . |
| APA | Zhou, Qiqi , Huang, Zhiwei , Huang, Meirong , Chen, Wen , Ni, Jiangwei , Wu, Xiaomin et al. Revitalizing platinum: Alkali-promoted formation of active metallic nanoparticles from inert Pt entities for enhanced benzene combustion . | APPLIED SURFACE SCIENCE , 2023 , 642 . |
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Engineering photoelectrodes with cocatalysts is an effective approach to enhance their photocatalytic performance. However, selecting an appropriate cocatalyst for a specific photoelectrode is challenging due to various factors within the system. Machine learning techniques are revolutionizing the catalytic field and are good at addressing multifactorial problems. In this study, several fundamental factors of the photoanode catalytic system and their specific mechanisms were systematically summarized. A comprehensive machine learning process was introduced to guide cocatalyst selection for BiVO4 photoanodes. A multi-layer perceptron neural network and several tree-based ensemble models were trained to capture intricate relationships among photoanodes, cocatalysts, and electrolytes, enabling the prediction of unstudied cases. The best-performing random forest model accurately captured the essential features of high-performance cases, achieving a generalization accuracy of 96.30% for binary classification. Furthermore, the model's built-in feature importance analysis revealed that the type and preparation method of cocatalysts were the two most significant factors affecting the catalytic system's performance. According to the Shapley additive explanations interpretation, some heuristic rules were provided to propose a class of promising cocatalyst/photoanode catalysts. Machine learning models are used to capture intricate relationships among BiVO4 photoanodes, cocatalysts, and electrolytes. Model interpretability is then performed to provide some heuristic rules to guide cocatalyst selection for BiVO4 photoanodes.
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| GB/T 7714 | Huang, Meirong , Wang, Sutong , Zhu, Hongwei . A comprehensive machine learning strategy for designing high-performance photoanode catalysts [J]. | JOURNAL OF MATERIALS CHEMISTRY A , 2023 , 11 (40) : 21619-21627 . |
| MLA | Huang, Meirong et al. "A comprehensive machine learning strategy for designing high-performance photoanode catalysts" . | JOURNAL OF MATERIALS CHEMISTRY A 11 . 40 (2023) : 21619-21627 . |
| APA | Huang, Meirong , Wang, Sutong , Zhu, Hongwei . A comprehensive machine learning strategy for designing high-performance photoanode catalysts . | JOURNAL OF MATERIALS CHEMISTRY A , 2023 , 11 (40) , 21619-21627 . |
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