材料科学
磷化物
光催化
贵金属
纳米颗粒
化学工程
煅烧
共价键
钴
催化作用
离解(化学)
纳米技术
金属
物理化学
化学
有机化学
冶金
工程类
作者
Lan Huang,Dengke Wang,Honghu Zeng,Lingling Zheng,Shiqin Lai,Jian‐Ping Zou
出处
期刊:Nanoscale
[The Royal Society of Chemistry]
日期:2022-01-01
卷期号:14 (48): 18209-18216
被引量:3
摘要
Non-noble materials with high efficiency and stability are essential for renewable energy applications. Herein, cobalt phosphide nanoparticles-decorated covalent organic frameworks (CTF-CoP) are synthesized via an in situ self-assembly method combined with the calcination process. In such a configuration, an intimate interaction between CoP and CTF matrix is gained through the Co-N chemical bonds, which not only significantly enhance the recyclability of CoP nanoparticles but also significantly improve the charge separation efficiency. Besides, the synergistically interactive Pδ--Coδ+-Nδ- states induced by the polarization effect of N-anchoring sites benefit for the adsorption and dissociation of water molecules in CTF-CoP. Consequently, CTF-CoP exhibits a higher photocatalytic hydrogen evolution rate (261.7 μmol g-1 h-1) and better durability as compared with the physically fixed CTF/CoP composite (64.8 μmol g-1 h-1) and even the noble metal-based CTF-Pt (191.3 μmol g-1 h-1). This work provides an avenue to construct highly stable non-noble photocatalyst for energy conversion and also emphasizes the potential of CTFs in constructing efficient heterojunctions.
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