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Fe2O3/Ni1-xFexS光阳极的制备与光电析氧性能探究——一个项目式探究综合化学实验

吴婷玲, 杨艳, 吴姣姣, 严大峰, 胡玮   

  1. 湖北大学化学化工学院, 湖北 武汉 430062
  • 收稿日期:2026-07-24 录用日期:2026-08-28
  • 通讯作者: 胡玮 E-mail:huwei76@hubu.edu.cn Wei Hu

Preparation and photoelectrochemical oxygen evolution performance of Fe2O3/Ni1-xFexS photoanode: a project-based inquiry comprehensive chemistry experiment

Tingling Wu, Yan Yang, Jiaojiao Wu, Dafeng Yan, Wei Hu   

  1. College of Chemistry and Chemical, Hubei University, Wuhan 430062, Hubei Province, China
  • Received:2026-07-24 Accepted:2026-08-28
  • Contact: Wei Hu E-mail:huwei76@hubu.edu.cn

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摘要： 本实验将“Fe2O3/Ni1-xFexS光阳极制备与光电析氧性能研究”这一科研课题转化为面向高年级本科生的项目式探究综合化学实验。实验采用水热-硫化技术在氟掺杂氧化锡(FTO)导电玻璃上合成复合光阳极，借助X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)等表征手段分析材料物相与形貌，结合模拟太阳光辐照下的线性扫描伏安曲线(LSV)、交流阻抗谱(PEIS)等光电化学测试评估析氧性能。结果表明，复合光阳极在1.23 V vs. RHE下光电流密度达3.10 mA·cm-2，为单一Fe2O3的2.3倍。教学采用“问题引导→方案设计→实验实施→数据分析→成果汇报”五阶段项目式流程，学生普遍反馈该实验加深了对光电催化原理的理解。实验内容涵盖材料合成、光电化学与界面催化及仪器分析等多学科知识，旨在巩固学生基础理论的同时培养科研思维与综合分析能力，为光电催化方向的综合实验教学提供参考案例。

关键词: 项目式探究, 综合化学实验, 光电催化, 析氧反应, Fe2O3光阳极, /Ni1-xFexS助催化剂

Abstract: This experiment converts the research topic “Preparation of Fe2O3/Ni1-xFexS photoanodes and investigation of their photoelectrochemical oxygen evolution performance” into a project-based inquiry comprehensive chemistry experiment for senior undergraduates. Composite photoanodes were synthesized on F-SnO2 (FTO) conductive glass by a hydrothermal-sulfidation method. The phase composition and morphology of the materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM), while the oxygen evolution performance was evaluated by linear sweep voltammetry (LSV) and photoelectrochemical impedance spectroscopy (PEIS) under simulated solar irradiation. The results show that the composite photoanode achieves a photocurrent density of 3.10 mA·cm-2 at 1.23 V vs. RHE, which is 2.3 times that of pristine Fe2O3. The teaching practice follows a five-stage project-based process: problem guidance, scheme design, experimental implementation, data analysis, and achievement reporting. Most students reported that this experiment deepened their understanding of photoelectrocatalysis principles. The experimental content integrates multidisciplinary knowledge, including material synthesis, photoelectrochemistry, interfacial catalysis, and instrumental analysis, aiming to consolidate students’ fundamental theories while cultivating their scientific research thinking and comprehensive analytical abilities. This design provides a reference case for integrating photoelectrocatalysis into comprehensive chemistry laboratory teaching.

Key words: Project-based inquiry, Comprehensive chemistry experiment, Photoelectrocatalysis, Oxygen evolution reaction, Fe2O3 photoanode, Ni1-xFexS co-catalyst