CdS@TiO2/Ni2P光催化剂的制备及其对高附加值有机转化的催化作用

Q3 Materials Science JCIS open Pub Date : 2021-12-01 DOI:10.1016/j.jciso.2021.100035
Yuangang Li, Shaosen Shi, Weike Shang, Huajing Li, Lihua Shen, Anning Zhou
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引用次数: 3

摘要

在选择性有机还原和氧化反应耦合的双功能光催化反应体系中,光生成的电子和空穴可以同时被利用来产生增值产品,使整个过程从可持续性和经济角度更具价值。本文合成了CdS& P25-Ni2P (SPN),实现了有机化合物在可见光条件下的选择性转化和析氢。用附加值较高的芳香醇脱氢半反应代替传统的牺牲剂氧化反应,实现了高效的光催化反应。考察了溶剂、取代基、光催化剂组分、助催化剂负载等因素对反应的影响。在最优条件下,底物在5 h内几乎完全转化,产氢速率可达1.148 mmol·gcat−1·h−1。通过对不同反应体系的比较研究,提出了不同可能的反应机理和反应路径。本文进一步探索了有机增值转化与制氢相结合的领域,为有效利用光生电子和空穴提供了新的策略,对未来涉及催化、材料等领域具有启发意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Preparation of CdS@TiO2/Ni2P photocatalyst for value-added organic transformation coupling with enhanced hydrogen evolution

In a dual-functional photocatalytic reaction system with coupled selective organic reductions and oxidation reaction, both the photogenerated electrons and holes can be simultaneously utilized to generate value-added products, make the overall process more valuable from a sustainability and economic perspective. Herein, CdS&P25–Ni2P (SPN) has been synthesized, which realized the selective transformation of organic compounds coupled with hydrogen evolution under visible light condition. The traditional sacrificial agent oxidation reaction is replaced by the dehydrogenation half reaction of aromatic alcohol with higher additional value, where high efficiency photocatalytic reaction can be realized. The effects of solvent, substituents, component of photocatalyst, co-catalyst loading and other factors on this reaction were explored. Under the optimal conditions, the substrate was almost completely transformed within 5 ​h, and the hydrogen production rate can reach 1.148 ​mmol·gcat−1·h−1. Through compare the research of different reaction systems, different possible reaction mechanisms and reaction paths have been proposed. This paper further explores the field of organic value-added transformation coupled with hydrogen production and provides a new strategy for the effective use of photogenerated electrons and holes, which will be inspirational for the future involving catalysis, materials and other fields.

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来源期刊
JCIS open
JCIS open Physical and Theoretical Chemistry, Colloid and Surface Chemistry, Surfaces, Coatings and Films
CiteScore
4.10
自引率
0.00%
发文量
0
审稿时长
36 days
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