A Novel Dual Z-Scheme Visible Light Catalyst PCN/BiOCl/CdS with Oxygen Vacancies for Benzylamine Oxidative Coupling Reaction

IF 2.1 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Surveys from Asia Pub Date : 2022-10-07 DOI:10.1007/s10563-022-09372-w

Li Qin, Yefeng Chen, Zhuhan Wang, Huicai Zheng, Wen Li, Guichuan Xu, Limei Zhou

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引用次数: 1

Abstract

Here we report a strategy to prepare a novel ternary dual Z-scheme PCN/BiOCl/CdS photocatalyst by in-situ introducing bismuth oxychloride (BiOCl) on porous carbon nitride (PCN) and then depositing cadmium sulfide (CdS). The synthesized PCN/BiOCl/CdS not only has the porous structure of PCN and the wide visible-light absorption range of CdS, but a special morphology and abundant oxygen vacancies of BiOCl under the action of the structure-directing agent ethylene glycol. Through the modulation of oxygen vacancies, the BiOCl in the PCN/BiOCl/CdS can be excited under visible light, thereby further improving its optical properties. The PCN/BiOCl/CdS exhibited excellent photocatalytic activity in oxidative coupling reaction of benzylamine under visible light. The excellent catalytic performance of PCN/BiOCl/CdS photocatalyst was due to high charge separation efficiency, oxygen vacancies and visible light absorption. Finally, we proposed a feasible photocatalytic mechanism for the PCN/BiOCl/CdS in oxidative coupling reaction of benzylamine.

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具有氧空位的双Z-Scheme可见光催化剂PCN/BiOCl/CdS用于苯胺氧化偶联反应

本文报道了在多孔氮化碳(PCN)上原位引入氯化铋(BiOCl)，然后沉积硫化镉(cd)，制备新型三元双Z-scheme PCN/BiOCl/CdS光催化剂的策略。合成的PCN/BiOCl/CdS不仅具有PCN的多孔结构和CdS的宽可见光吸收范围，而且在结构导向剂乙二醇的作用下具有BiOCl的特殊形态和丰富的氧空位。通过对氧空位的调制，PCN/BiOCl/CdS中的BiOCl可以在可见光下被激发，从而进一步改善其光学性能。PCN/BiOCl/CdS在可见光下对苄胺的氧化偶联反应表现出优异的光催化活性。PCN/BiOCl/CdS光催化剂具有较高的电荷分离效率、氧空位和可见光吸收性能。最后，我们提出了PCN/BiOCl/CdS在苯胺氧化偶联反应中的可行光催化机理。

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来源期刊

Catalysis Surveys from Asia 化学-物理化学

CiteScore

4.80

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Early dissemination of important findings from Asia which may lead to new concepts in catalyst design is the main aim of this journal. Rapid, invited, short reviews and perspectives from academia and industry will constitute the major part of Catalysis Surveys from Asia . Surveys of recent progress and activities in catalytic science and technology and related areas in Asia will be covered regularly as well. We would appreciate critical comments from colleagues throughout the world about articles in Catalysis Surveys from Asia . If requested and thought appropriate, the comments will be included in the journal. We will be very happy if this journal stimulates global communication between scientists and engineers in the world of catalysis.