Non-noble nickel-modified covalent organic framework for photocatalytic hydrogen production

IF 4.9 2区 化学 Q2 CHEMISTRY, PHYSICAL
Rongyu Xu, Tong Zhou, Mengyao Tian, Haoran Li, Shen Xu, Yuchen Yang, Yaru Zhang, Jinming Ma, Tifeng Jiao
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引用次数: 0

Abstract

Covalent organic framework (COF) materials, with their remarkable conjugated systems and layered structures, have remained a research focus in the field of photocatalysis in recent years. Incorporating co-catalysts into COFs materials is regarded as a simple and effective strategy to address the serious issue of photogenerated carrier recombination faced by COF-based catalysts. In particular, noble metal co-catalysts can significantly enhance photocatalytic efficiency. However, due to the high cost of noble metals, they are not suitable for long-term and widespread applications. As a result, non-noble metal co-catalysts with low cost and excellent catalytic performance have garnered significant attention. In this study, a non-noble metal Ni-modified COF composite catalyst (Ni/COF) was successfully prepared by loading Ni-based metal salts onto the surface of β-ketoenamine COF (TAPB-Tp-COF) through in situ photodeposition method. The addition of the Ni co-catalyst significantly enhanced the catalytic performance to 0.54 mmol/g·h, which is 4.3 times that of pure TAPB-Tp-COF. This work provides a new approach for constructing economical, clean, and efficient photocatalytic systems.
用于光催化制氢的非镍改性共价有机框架
共价有机框架(COF)材料具有显著的共轭体系和层状结构,近年来一直是光催化领域的研究重点。在 COF 材料中加入助催化剂被认为是解决 COF 催化剂所面临的光生载流子重组这一严重问题的一种简单而有效的策略。其中,贵金属助催化剂可显著提高光催化效率。然而,由于贵金属成本高昂,不适合长期和广泛应用。因此,具有低成本和优异催化性能的非贵金属助催化剂受到了广泛关注。在本研究中,通过原位光沉积法将 Ni 基金属盐负载到 β-酮烯胺 COF(TAPB-Tp-COF)表面,成功制备了非贵金属 Ni 改性 COF 复合催化剂(Ni/COF)。镍助催化剂的加入显著提高了催化性能,达到 0.54 mmol/g-h,是纯 TAPB-Tp-COF 催化剂的 4.3 倍。这项工作为构建经济、清洁、高效的光催化系统提供了一种新方法。
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来源期刊
CiteScore
8.70
自引率
9.60%
发文量
2421
审稿时长
56 days
期刊介绍: Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.
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