富氧空位原位控制合成bii /Bi2S3 z型异质结构光催化脱除六价铬

IF 3.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Molecular Catalysis Pub Date : 2025-03-22 DOI:10.1016/j.mcat.2025.115023

Meng Lan, Xiaoli Dong, Nan Zheng, Yujun Liu

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引用次数: 0

摘要

重金属污染的持续增加严重影响了生态环境和人类健康，光催化技术被认为是最有效、最环保的处理方法之一。本文制备了具有丰富氧空位的bii /Bi2S3 z型异质结构光催化剂，并将其应用于六价铬（Cr(VI)）的脱除。原位异质结构的紧密接触界面和丰富的氧空位可以加速电荷输运，提高光生载流子分离效率。z型异质结构独特的电荷传输路径赋予了材料优越的氧化还原能力。优化后的bii /Bi2S3在10 min可见光照射下可有效还原Cr(VI)，还原效率达95.6%，为促进含铬废水的处理提供了一种有前景的光催化剂。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

In-situ controlled synthesis of BiOI/Bi2S3 Z-scheme heterostructure with enriched oxygen vacancies for efficient photocatalytic removal of hexavalent chromium

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In-situ controlled synthesis of BiOI/Bi2S3 Z-scheme heterostructure with enriched oxygen vacancies for efficient photocatalytic removal of hexavalent chromium

The continuous increase of heavy metal pollution has seriously affected the ecological environment and human health, and photocatalysis technology is considered to be one of the most effective and environmentally friendly treatment methods. Herein, BiOI/Bi₂S₃ Z-scheme heterostructure photocatalyst with abundant oxygen vacancies was fabricated and applied for the removal of hexavalent chromium (Cr(VI)). The tightly contact interface of in situ heterostructure and abundant oxygen vacancies can accelerate charge transport and improve the photogenerated carrier separation efficiency. The unique charge transmission path of the Z-scheme heterostructure endows the material with superior redox ability. BiOI/Bi₂S₃ with optimized ratio can achieve effective reduction of Cr(VI) with the efficiency of 95.6 % under 10 min visible light illumination This work offers a promising photocatalyst for promoting the disposal of chromium-containing wastewater.

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来源期刊

Molecular Catalysis Chemical Engineering-Process Chemistry and Technology

CiteScore

6.90

自引率

10.90%

发文量

700

审稿时长

40 days

期刊介绍： Molecular Catalysis publishes full papers that are original, rigorous, and scholarly contributions examining the molecular and atomic aspects of catalytic activation and reaction mechanisms. The fields covered are: Heterogeneous catalysis including immobilized molecular catalysts Homogeneous catalysis including organocatalysis, organometallic catalysis and biocatalysis Photo- and electrochemistry Theoretical aspects of catalysis analyzed by computational methods