光催化
材料科学
表面改性
介孔材料
金属有机骨架
催化作用
纳米技术
化学工程
分解水
金属
分子
化学
有机化学
吸附
冶金
工程类
作者
Haidi Hu,Kailai Zhang,Ge Yan,Litong Shi,Baohua Jia,Hongwei Huang,Yu Zhang,Xiaodong Sun,Tianyi Ma
出处
期刊:Chinese Journal of Catalysis
[China Science Publishing & Media Ltd.]
日期:2022-09-01
卷期号:43 (9): 2332-2341
被引量:39
标识
DOI:10.1016/s1872-2067(21)63949-9
摘要
Different materials, such as metal sulphides, are often combined with metal-organic frameworks (MOFs) to develop multi-functional composites and improve their photocatalytic properties. However, the high interfacial energy barrier limits the formation and nano-assembly of the heterogeneous junctions between MOFs and metal sulphides. Herein, the heterostructured [email protected] are successfully constructed through a sequential synthesis method, in which the mesoporous Zr-MOF are firstly decorated with thioglycolic acid through pore functionalization, and followed by the S2- anion exchange process resulting in the surface close attached growth of CdS onto Zr-MOF-S materials. Due to the presence of molecules linkers, the CdS can be precisely decorated onto Zr-MOF-S without aggregation, which can provide more active sites. Moreover, the intimate connections and the suitable band structures between two materials can also facilitate the photogenerated electron-hole pairs separation. Therefore, the resulting [email protected] with appropriate ratio exhibits high photocatalytic activity for water reduction, in which the H2 evolution rate can reach up to 1861.7 μmol·g−1·h−1, 4.5 times higher than pure CdS and 2.3 times higher than of Zr-MOF/CdS, respectively. Considering the promising future of MOF-based photocatalysts, this work may provide an avenue for the further design and synthesis MOF-based composite photocatalysts for efficient H2 evolution.
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