光催化
材料科学
异质结
MXenes公司
制氢
纳米复合材料
可见光谱
石墨烯
热液循环
分解水
载流子
氢
化学工程
光电效应
辐照
纳米技术
光化学
催化作用
光电子学
化学
生物化学
物理
有机化学
核物理学
工程类
作者
Yongjuan Chen,Yanfang Ge,Chunling Wu,Hua Tang,Luo X,Jiao He,Liang Jiang,Zhiying Yan,Jiaqiang Wang
摘要
ZnIn2S4, a novel two-dimensional visible light-responsive photocatalyst, has attracted much attention in the photocatalytic evolution of H2 under visible light irradiation due to its attractive intrinsic photoelectric properties and geometric configuration. However, ZnIn2S4 still has severe charge recombination, which results in moderate photocatalytic performance. Herein, we report the successful synthesis of 2D/2D ZnIn2S4/Ti3C2 nanocomposites by a facile one-step hydrothermal method. The efficiency of the nanocomposites in photocatalytic hydrogen evolution under visible light irradiation was also evaluated for different ratios of Ti3C2, and the optimal photocatalytic activity was achieved at 5% Ti3C2. Importantly, the activity was significantly higher than that of pure ZnIn2S4, ZnIn2S4/Pt, and ZnIn2S4/graphene. The enhanced photocatalytic activity is mainly due to the close interfacial contact between Ti3C2 and ZnIn2S4 nanosheets, which amplifies the transport of photogenerated electrons and enhances the separation of photogenerated carriers. This research describes a novel approach for the synthesis of 2D MXenes for photocatalytic hydrogen production and expands the utility of MXene composite materials in the fields of energy storage and conversion.
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