我组赵娟在Catalysis Today上发表论文

题目：

Carbon dots modified WO₂-NaxWO₃ composite as UV-Vis-NIR broad spectrum-driven photocatalyst for overall water splitting

作者：

Juan Zhao, Chang’an Liu, Huibo Wang, Yijun Fu, Cheng Zhu, Hui Huang, Fan Liao, Yang Liu, Mingwang Shao, Zhenhui Kang

单位：

Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou, 215123, Jiangsu, P.R. China

摘要：

The utilization of solar energy and valid photocatalyst is one of the most effective strategies to achieve water splitting into hydrogen (H₂) and oxygen (O₂). Although enormous effort has been devoted to photocatalysts, the sunlight still cannot be fully utilized by the developed photocatalysts. It is important but remains challenging to develop a broad spectrum-driven photocatalyst for overall water splitting. Here, we design a UV-Vis-NIR broad spectrum-driven carbon dots modified WO₂-NaxWO₃ (WO₂-Na_xWO₃-CDs) composite as photocatalyst for overall water splitting without requirement of any sacrificial agents or cocatalysts. When the concentration of CDs in the sample is 0.008 gCDs/gcatalyst, the WO2-Na_xWO₃-CDs shows the highest photocatalytic activity with stoichiometric ratio of H₂/O₂ evolutions and their rates are 0.05/0.02, 2.58/1.24, 4.74/2.28 μmol/h under UV (λ< 420 nm), visible (420 nm≤λ≤760 nm) and near-infrared (λ>760 nm) light irradiation, respectively. It is also impressive that the photocatalyst shows excellent stability for about 6 cycles of repetitive experiments. The WO₂-Na_xWO₃-CDs composites functioned as broad spectrum-driven photocatalyst for overall water splitting should attribute to the synergistic effect of WO₂-NaxWO₃ and CDs, in which the WO₂-Na_xWO₃ provides the suitable bandgap, while the CDs can enhance light absorption and accelerate separation efficiencies of photo-generated charge carriers.

影响因子：

5.825

分区情况：

2区

链接：  

https://www.sciencedirect.com/science/article/pii/S0920586118309155