光催化
X射线光电子能谱
表面等离子共振
金属
材料科学
可见光谱
光电子学
吸收(声学)
氧化还原
光诱导电荷分离
载流子
复合数
纳米技术
光化学
化学工程
化学
纳米颗粒
人工光合作用
催化作用
复合材料
冶金
生物化学
工程类
作者
Wei Quan,Jinyu Bao,Xiangjun Meng,Yunqi Ning,Yanan Cui,Xiaoying Hu,Shansheng Yu,Hongwei Tian
标识
DOI:10.1016/j.jallcom.2023.169396
摘要
An ideal photocatalyst should have high redox capacity, efficient charge separation, and large reaction surface area. However, it is an extreme challenge to construct a photocatalytic system with above three merits. Herein, the g-C3N4/[email protected]2WO6 composite photocatalyst was prepared by simple wet chemical method. Then the separation pathway of photoinduced charges through the interface was explored by XPS, EPR and active species capture experiments, confirming that the Z-scheme charge transfer route was followed. The optimized composite photocatalyst exhibited the photocatalytic hydrogen production rate of 1219.3 μmol h−1g−1, which is 2.29 times that of pure g-C3N4 (533.4 μmol h−1g−1). Moreover, the photocatalytic degradation rates of RhB and TC were 82.43% and 66.7%, respectively, which were 7.55 times and 1.92 times that of pure Bi2WO6. Ultimately, the enhanced photocatalytic performances were attributed to the synergistic effect of 2D/2D coupling interface and the deposited metal Bi, which not only benefited the efficient charge separation and fast charge migration but also provided the large reaction surface area. In addition, surface plasmon resonance effect of metal Bi can boost the visible light absorption and broaden the light absorption range to the full spectrum. Our study provides a new idea to design high-performance Z-scheme photocatalyst for highly efficient utilization of solar energy.
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