纳米棒
光催化
苯甲醛
材料科学
催化作用
异质结
选择性
吸附
化学工程
氧化物
氢
光化学
纳米技术
化学
有机化学
光电子学
冶金
工程类
作者
Chunli Jiang,Hao Wang,Yongqing Wang,Hongbing Ji
标识
DOI:10.1016/j.apcatb.2020.119235
摘要
The solar-driven transformation of alcohols into hydrogen and value-added products is a promising strategy for the green synthesis of fuels and fine chemicals. However, achieving these reactions via photocatalysts with efficient photo-adsorption and charge‑separation is challenging. Herein, a novel all-solid-state Z‑scheme catalyst was constructed. In this system, ZnIn2S4 nanosheets were grown in situ on the surfaces of CeO2 nanorods. Such 2D/1D composites showing intimate contact can form solid Z-scheme heterostructures that combine the excellent visible-light absorption of ZnIn2S4 nanosheets, and the fast charge transport of CeO2 nanorods, while retaining the strong reducibility of electrons in the CB of ZnIn2S4 nanosheets and the oxidizability of holes in the VB of CeO2 nanorods. These synergistic advantages enhanced the photocatalytic performance, and the benzaldehyde and hydrogen yields reached 664.1 and 1496.6 μmol gcat−1. h−1 respectively. Moreover, a high benzaldehyde selectivity was achieved. These findings provide new opportunities for application of hierarchical Z-scheme metal-oxide-based photocatalysts.
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