Construction of S-scheme Zn3In2S6/TiO2 films with enhanced charge transfer for enhanced photocatalytic removal of norfloxacin

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-09-30 DOI:10.1016/j.colsurfa.2025.138510

Ruixin Chen , Sheng Ding , Wei Gan , Jun Guo , Jingtao Huang , Run Liu , Miao Zhang , Zhaoqi Sun

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Abstract

The traditional semiconductor photocatalyst has low charge separation efficiency and weak absorbance, which seriously limits its photocatalytic efficiency. Heterojunction materials composed of staggered band semiconductors have been proved to be an effective strategy to improve these challenges. In this paper, a hydrophilic heterojunction Zn₃In₂S₆/TiO₂ (ZT-x) capable of efficiently photocatalytic removal of norfloxacin (NOR) was prepared by simple hydrothermal method. The results show that ZT-2 has excellent photocatalytic performance. The removal efficiency of NOR reaches 93.57 % within 90 min, and the reaction rate constant K is 0.02979 min⁻¹, which is much higher than that of intrinsic TiO₂. Photoelectrochemical tests confirmed the enhanced electron-hole separation ability and photoelectron capture ability of ZT-2. Through the toxicity analysis of the NOR intermediates, the green and environmental protection of ZT-2 was confirmed. This study provides an effective reference for the design of high-performance heterojunction photocatalysts.

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S-scheme增强电荷转移Zn3In2S6/TiO2膜的构建及其光催化去除诺氟沙星的研究

传统的半导体光催化剂存在电荷分离效率低、吸光度弱等问题，严重限制了其光催化效率。由交错带半导体组成的异质结材料已被证明是改善这些挑战的有效策略。本文采用简单水热法制备了一种能有效光催化去除诺氟沙星（NOR）的亲水性异质结Zn3In2S6/TiO2 （ZT-x）。结果表明，ZT-2具有优异的光催化性能。在90 min内对NOR的去除率达到93.57 %，反应速率常数K为0.02979 min−1，远高于TiO2的去除率。光电化学测试证实ZT-2的电子空穴分离能力和光电子捕获能力增强。通过对NOR中间体的毒性分析，证实了ZT-2的绿色环保性。该研究为高性能异质结光催化剂的设计提供了有效的参考。

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来源期刊

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

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.