光催化
催化作用
纳米颗粒
共价键
胶体金
材料科学
纳米技术
生产(经济)
化学工程
化学
有机化学
工程类
经济
宏观经济学
作者
Yong Zhang,Junyi Qiu,Bicheng Zhu,Guotai Sun,Bei Cheng,Linxi Wang
出处
期刊:Chinese Journal of Catalysis
[China Science Publishing & Media Ltd.]
日期:2024-02-01
卷期号:57: 143-153
标识
DOI:10.1016/s1872-2067(23)64580-2
摘要
Covalent organic frameworks (COFs) are porous crystalline materials with promising applications in photocatalysis, but their performance is greatly hampered by the fast recombination of photogenerated carriers. Herein, a hollow spherical COF was synthesized via the condensation polymerization of 1,3,5-tris(4-aminophenyl)benzene and 1,3,5-benzenetricarbaldehyde, and Au nanoparticles were in-situ deposited onto the COF through NaBH4 reduction to ameliorate the photocatalytic performance. The composite exhibits impressive photocatalytic H2O2-production performance with the highest H2O2-evolution rate of 6067 μmol g−1 h−1 under visible light irradiation, which is about 1.9 times that of the pristine COF. The enhanced photocatalytic activity was ascribed to improved light absorption, abundant active Au sites, and efficient transfer and separation of photogenerated carriers in space. This work provides an avenue for designing high-performance H2O2-production photocatalysts by decorating porous COFs with active noble-metal sites.
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