大学化学 >> 2026, Vol. 41 >> Issue (3): 381-389.doi: 10.12461/PKU.DXHX202504067

所属专题： 温室气体(CO2、CH4)化学

化学实验 上一篇    下一篇

CoAl-LDH/CdS材料的合成及用于光催化CO2还原综合实验设计

张海燕1, 阳敏1, 汤森培1, 李鑫2, 李佑稷1   

  1. 1 吉首大学化学国家级教学示范中心, 湖南 吉首 416000;
    2 华南农业大学生物质工程研究院, 广州 510000
  • 收稿日期:2025-04-15 录用日期:2025-06-24 发布日期:2026-03-24
  • 通讯作者: 李鑫, 李佑稷 E-mail:Jdyoujili@vip.163.com;xinli@scau.edu.cn Xin Li, Youji Li
  • 基金资助:
    基于化学化工应用创新型人才培养的“二工一创”实践教育中心建设探索与实践(E-HGZY20202023)

Synthesis of CoAl-LDH/CdS Material and Experimental Design for Photocatalytic CO2 Reduction

Haiyan Zhang1, Min Yang1, Senpei Tang1, Xin Li2, Youji Li1   

  1. 1 National Demonstration Center for Chemistry Education, Jishou University, Jishou 416000, Hunan Province, China;
    2 Institute of Biomass Engineering, South China Agricultural University, Guangzhou 510000, China
  • Received:2025-04-15 Accepted:2025-06-24 Published:2026-03-24
  • Contact: Xin Li, Youji Li E-mail:Jdyoujili@vip.163.com;xinli@scau.edu.cn

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摘要： 光催化技术利用丰富的太阳能将CO2转化为可供人们使用的碳氢化合物燃料，是近几年热门的研究领域。为培养创新人才和缓解环境问题，设计了CoAl-LDH/CdS材料的合成及用于光催化CO2还原实验，提高本科生的创新思维和学以致用能力，将实验教学与国家发展紧紧融合在一起。本文采用水热法合成了CoAl-LDH/CdS复合材料，作为高效、环保的光催化剂，在可见光照射下，CoAl-LDH/CdS复合材料的光催化CO2还原性能显著提高，CO产量最高达到39.02 μmol·g-1，以期获得可在本科实验教学中推广应用的教学实验。1) 根据本科实验教学耗时短、操作相对简单等特点，通过CoAl-LDH/CdS材料性能检测结果选择最佳反应物配比，保证在课堂有限的学时内，合成性能优异的目标产物，培养学生制备复合纳米材料和现代分析设备表征分析能力。2) 针对CoAl-LDH/CdS材料增强光吸收能力和提供丰富的活性位点，实现大大降低光生电子-空穴对的复合，提高了CO2光还原性能，充分体现化学在新能源与环境中的应用，同时加强学生通过光催化技术解决能源与环境问题的能力。3) 根据本科实验学生受益面广、人数多等特点，在保障实验效果的基础上，降低原料成本，减少源头及过程污染，实现绿色化学的宗旨。

关键词: 光催化, CO2还原, 综合实验

Abstract: In recent years, Photocatalytic technology which utilizes abundant solar energy for converting CO2 into valuable hydrocarbon fuels have gained significant research attention. To foster innovative talent development and alleviate environgmental issue, we designed the synthesis of CoAl-LDH/CdS materials and their application in photocatalytic CO2 reduction experiments. This initiative aims to enhance undergraduates' innovative thinking and practical skills while aligning experimental teaching with national development priorities. The CoAl-LDH/CdS composite material was synthesized through a hydrothermal method, demonstrating its efficacy as an environmentally friendly photocatalyst. Under visible light irradiation, the composite exhibited significantly enhanced photocatalytic CO2 reduction activity, achieving a maximum CO yield of 39.02 μmol·g-1. This study focuses on developing a teaching experiment suitable for widespread implementation in undergraduate laboratory curricula. 1) Optimized Synthesis for Teaching Efficiency: Considering the constraints of undergraduate experiments, such as limited time and operational simplicity, optimal reactant ratios were determined through fluorescence spectrum analysis of CoAl-LDH/CdS materials. This approach ensures the synthesis of high-performance products within restricted class hours while enhancing students' skills in nanomaterial preparation and modern analytical characterization techniques. 2) Enhanced Photocatalytic Mechanisms: The CoAl-LDH/CdS composite significantly improves CO2 photoreduction by enhancing light absorption and providing abundant active sites, thereby suppressing photogenerated electron-hole pair recombination. This application underscores chemistry's critical role in energy and environmental solutions, deepening students' understanding of photocatalytic technologies in addressing global challenges. 3) Cost-Effective and Sustainable Design: To accommodate large-scale undergraduate participation, material costs were reduced, and pollution was minimized at both source and process stages without compromising experimental efficacy. This approach aligns with green chemistry principles, ensuring educational effectiveness alongside environmental sustainability.

Key words: Photocatalysis, CO2 reduction, Comprehensive experiment