光催化
材料科学
水溶液
化学工程
纳米技术
纤维素
催化作用
能量转换效率
光电子学
化学
有机化学
工程类
作者
Pei Wang,Yongjun Yuan,Qing‐Yu Liu,Quan Cheng,Zhi‐Kai Shen,Zhen‐Tao Yu,Zhigang Zou
出处
期刊:Chemsuschem
[Wiley]
日期:2021-05-27
卷期号:14 (14): 2860-2865
被引量:38
标识
DOI:10.1002/cssc.202100829
摘要
Abstract As an alternative strategy for H 2 production under ambient conditions, solar‐driven lignocellulose‐to‐H 2 conversion provides a very attractive approach to store and utilize solar energy sustainably. Exploiting efficient photocatalyst for photocatalytic lignocellulose‐to‐H 2 conversion is of huge significance and remains the key challenge for development of solar H 2 generation from lignocellulose. Herein, 2D‐2D MoS 2 /TiO 2 photocatalysts with large 2D nanojunction were constructed for photocatalytic lignocellulose‐to‐H 2 conversion. In this smart structure, the 2D nanojunctions acted as efficient channel for charge transfer from TiO 2 to MoS 2 to improve charge separation efficiency and thus enhance photocatalytic lignocellulose‐to‐H 2 conversion activity. The 2 % MoS 2 /TiO 2 photocatalyst showed the highest photocatalytic lignocellulose‐to‐H 2 conversion performance with the maximal H 2 generation rate of 201 and 21.4 μmol h −1 g −1 in α‐cellulose and poplar wood chip aqueous solution, respectively. The apparent quantum yield at 380 nm reached 1.45 % for 2 % 2D‐2D TiO 2 /MoS 2 photocatalyst in α‐cellulose aqueous solution. This work highlights the importance of optimizing the interface structures of photocatalyst for solar‐driven lignocellulose‐to‐H 2 conversion.
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