Design of 2D/2D ZnIn2S4/MgAl-LDH core–shell nanostructures toward enhanced photodegradation of organic dyes†

IF 3.5 4区环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL

Environmental Science: Water Research & Technology Pub Date : 2024-08-16 DOI:10.1039/D4EW00340C

Qiang Gao, Lingchun Ye, Wei Liu, Junxi Li, Yuchen Cui, Naicai Xu and Mingjin Zhang

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引用次数: 0

Abstract

The rational design of semiconductor photocatalysts with multi-dimensional nanostructures is an effective way to solve the problem of water environmental pollution. Herein, a series of ZnIn₂S₄/MgAl-LDH (ZIS/LDH) composites with core–shell nanostructures were synthesized by in situ growth of 2D ZnIn₂S₄ nanosheets on hexagonal LDH sheets. The obtained ZIS/LDH composite exhibited enhanced photocatalytic performance with 100% degradation efficiency for methyl orange (MO) within 20 min illumination, which was mainly attributed to the heterostructure formed by the excellent interface contact of the nanostructures, thereby inhibiting the recombination of photogenerated charges. Additionally, the as-synthesized photocatalyst shows satisfactory photocatalytic activity in stability tests and removal experiments for various dye pollutants. The present work provides novel insight into the design of heterojunction photocatalysts with multidimensional nanostructures and environmentally friendly applications.

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设计二维/二维 ZnIn2S4/MgAl-LDH 核壳纳米结构以增强有机染料的光降解能力

合理设计具有多维纳米结构的半导体光催化剂是解决水环境污染问题的有效途径。本文通过在六边形 LDH 片上原位生长二维 ZnIn2S4 纳米片，合成了一系列具有核壳纳米结构的 ZnIn2S4/MgAl-LDH （ZIS/LDH）复合材料。得到的 ZIS/LDH 复合材料具有更强的光催化性能，在 20 分钟的光照时间内对甲基橙（MO）的降解效率达到 100%，这主要归功于纳米结构之间良好的界面接触所形成的异质结构，从而抑制了光生电荷的重组。此外，所合成的光催化剂在稳定性测试和去除各种染料污染物的实验中显示出令人满意的光催化活性。本研究成果为设计具有多维纳米结构的异质结光催化剂及环境友好型应用提供了新的见解。

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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来源期刊

Environmental Science: Water Research & Technology ENGINEERING, ENVIRONMENTALENVIRONMENTAL SC-ENVIRONMENTAL SCIENCES

CiteScore

8.60

自引率

4.00%

发文量

206

期刊介绍： Environmental Science: Water Research & Technology seeks to showcase high quality research about fundamental science, innovative technologies, and management practices that promote sustainable water.