我组李嘉诚在Applied Catalysis B: Environment上发表论文
Interaction of metal ions in high efficiency seawater hydrogen peroxide production by a carbon-based photocatalyst | |
作者: | Jiacheng Li,[a] Hong Shi,[a] Zenan Li,[a] Jiaxuan Wang,[a] Honglin Si,[a] Fan Liao,[a]* Hui Huang,[a]* Yang Liu,[a]* Zhenhui Kang,[a,b]* |
单位: | [a] Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, People’s Republic of China. [b]Macao Institute of Materials Science and Engineering (MIMSE), MUST-SUDA Joint Research Center for Advanced Functional Materials, Macau University of Science and Technology, Taipa 999078, Macao. |
摘要: | Photocatalytic seawater splitting is a promising method for producing hydrogen peroxide (H2O2). However, the presence of metal ions usually deactivates catalysts and causes undesirable reactions, highlighting the need for deeply understanding these interactions. Herein, a carbon-based composite photocatalyst (CQM) is fabricated for photocatalytic production of H2O2. The metal ions strongly affect the photocatalytic activity of the CQM catalyst with order of Mg2+> Al3+> Ca2+> K+, consistent with the surface effective electron concentration calculated from transient photovoltage (TPV) technology. Notably, with the presence of Mg2+ at 0.36 mol L−1, the H2O2 yield is 12,812 μmol g−1 h−1. Under the guidance of machine learning, the H2O2 yield is further improved to 19,560 μmol g−1 h−1 by adjusting the concentration of multiple ions. Significantly, in a real seawater system, the photoproduction of H2O2 on CQM reaches up to a recorded value of 11306 μmol g−1 h−1 under visible light illumination. |
影响因子: | 22.1 |
分区情况: | 1区 |
链接: | https://www.sciencedirect.com/science/article/pii/S0926337323011840 |