物理化学学报 >> 2025, Vol. 41 >> Issue (12): 100174.doi: 10.1016/j.actphy.2025.100174

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TiO2/CdIn2S4 S型异质结光催化剂促进光催化产氢耦合香兰醇氧化

雷嘉莉1, 王娟1,*(), 张文慧1, 王国宏1,*(), 梁子辉2, 李金懋1,*()   

  1. 1 湖北师范大学化学化工学院, 污染物分析与资源化技术湖北省重点实验室, 湖北 黄石 435002
    2 武汉纺织大学, 先进纺纱织造及清洁生产国家地方联合工程实验室, 湖北 武汉 430073
  • 收稿日期:2025-07-26 修回日期:2025-08-24 录用日期:2025-08-25 发布日期:2025-10-23
  • 通讯作者: Email: wangjuan830508@163.com (王娟)wanggh2003@163.com (王国宏)jemolee@126.com (李金懋)
  • 基金资助:
    国家自然科学基金(52003079); 国家自然科学基金(22075072); 湖北省自然科学基金(2023AFD027); 湖北省自然科学基金(2024AFB238); 湖北省教育厅科学研究计划项目(D20232504); 武汉纺织大学先进纺纱织造及清洁生产国家地方联合工程实验开放课题(FX20240019)

TiO2/CdIn2S4 S-scheme heterojunction photocatalyst promotes photocatalytic hydrogen evolution coupled vanillyl alcohol oxidation

Jiali Lei1, Juan Wang1,*(), Wenhui Zhang1, Guohong Wang1,*(), Zihui Liang2, Jinmao Li1,*()   

  1. 1 Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, Hubei Province, China
    2 National Local Joint Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University, Wuhan 430073, Hubei Province, China
  • Received:2025-07-26 Revised:2025-08-24 Accepted:2025-08-25 Published:2025-10-23
  • Contact: Email: wangjuan830508@163.com (Juan Wang)wanggh2003@163.com (Guohong Wang)jemolee@126.com (Jinmao Li)
  • Supported by:
    the National Natural Science Foundation of China(52003079); the National Natural Science Foundation of China(22075072); Natural Science Foundation of Hubei Province(2023AFD027); Natural Science Foundation of Hubei Province(2024AFB238); Scientific Research Project of Education Department of Hubei Province(D20232504); the Open Research Fund of National Local Joint Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University(FX20240019)

摘要:

本文采用静电纺丝与水热法相结合的策略,成功制备了具有双功能的TiO2/CdIn2S4 S型异质结光催化剂,用于耦合产氢与香兰醇(VAL)选择性氧化为香兰醛(VN)。实验结果表明,含0.5 wt% CdIn2S4的复合材料表现出最佳光催化性能,其产氢速率达403.36 μmol g−1 h−1,同时VAL转化率为90.99%。实验与密度泛函理论(DFT)计算证实,S型异质结结构可有效促进光生电荷的迁移与分离,显著提升电荷分离效率。在该体系中具有更强氧化能力的光生空穴被保留下来,用于催化VAL转化为VN,而具有更强还原能力的电子则用于光催化产氢反应。本研究提出了一种将光催化产氢与有机化合物选择性转化相结合的新策略,为开发高效太阳能驱动的新型光催化系统提供了创新思路。

关键词: TiO2/CdIn2S4, S型异质结, 双功能光催化剂, 香兰醇, 选择性氧化

Abstract:

In this paper, a dual-function TiO2/CdIn2S4 S-scheme heterojunction photocatalyst was fabricated through electrospinning and hydrothermal methods for hydrogen generation coupled with the selective oxidation of vanillyl alcohol (VAL) to vanillin (VN). The results indicate that the hybrid material containing 0.5 wt% CdIn2S4 possesses the best photocatalytic performance. The hydrogen generation rate reaches 403.36 μmol g−1 h−1. Meanwhile, the conversion of VAL is measured to be 90.99%. The results of experiments and density functional theory (DFT) calculations elucidate that the S-scheme heterojunction enhances the rate of charge migration and improves the efficiency of charge separation. In this system, the photoexcited holes with stronger oxidation capacity are reserved to catalyze the conversion of VAL into VN, while the photoexcited electrons with stronger reduction capacity are utilized to generate hydrogen. This study introduces a promising strategy that combines photocatalytic hydrogen generation with the selective conversion of organic compounds, offering novel insights into the development of innovative photocatalysts for effective solar energy utilization.

Key words: TiO2/CdIn2S4, S-scheme heterojunction, Dual-function photocatalyst, Vanillyl alcohol, Selective oxidation