广西师范大学学报（自然科学版） ›› 2024, Vol. 42 ›› Issue (2): 166-174.doi: 10.16088/j.issn.1001-6600.2023070603

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Co3ZnC@C促进g-C3N4光催化产氢及其机理

周训富1*, 周小松1, 罗金1, 许丽梅1, 方岳平2*   

  1. 1.岭南师范学院 化学化工学院, 广东 湛江 524048;
    2.华南农业大学 材料与能源学院, 广东 广州 510642
  • 收稿日期:2023-07-06 修回日期:2023-08-16 发布日期:2024-04-22
  • 通讯作者: 周训富(1988—), 男, 湖南衡阳人, 岭南师范学院讲师, 博士。 E-mail: xfzhou@lingnan.edu.cn；方岳平(1966—), 男, 湖南岳阳人, 华南农业大学教授, 博导。 E-mail: ypfang@scau.edu.cn
  • 基金资助:
    国家自然科学基金(21972048); 广东省基础与应用基础研究基金(2021A1515110003)

Co3ZnC@C Promoting the Photocatalytic Hydrogen Production of g-C3N4 and Its Mechanism

ZHOU Xunfu1*, ZHOU Xiaosong1, LUO Jin1, XU Limei1, FANG Yueping2*   

  1. 1. School of Chemistry and Chemical Engineering, Lingnan Normal University, Zhanjiang Guangdong 524048, China;
    2. College of Materials and Energy, South China Agricultural University, Guangzhou Guangdong 510642, China
  • Received:2023-07-06 Revised:2023-08-16 Published:2024-04-22

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摘要： 光催化产氢技术是实现太阳能到绿色氢能转化的有效途径,然而其实际应用受到高成本、低效率的限制。本文通过简单的沉淀-煅烧法合成一种独特的碳包覆Co3ZnC纳米颗粒(Co3ZnC@C),将其作为助催化剂,与光催化剂g-C3N4耦合构建新颖的不含贵金属的复合光催化剂Co3ZnC@C/g-C3N4,并对其结构和形貌进行表征,对其光催化产氢性能进行研究。实验结果表明:Co3ZnC@C/g-C3N4的光催化产氢速率是纯g-C3N4的109倍,催化产氢速率大幅提高是因为Co3ZnC@C作为助催化剂负载在g-C3N4的表面,能够促进g-C3N4的电荷分离,加快其表面析氢反应速率。该研究拓宽了金属碳化物材料的应用范围,为设计先进的太阳能转换光催化剂提供了新的途径。

关键词: 碳化钴锌, 氮化碳, 复合材料, 光催化产氢, 助催化剂

Abstract: Photocatalytic hydrogen production technology is an effective way to realize the conversion of solar energy to green hydrogen energy, but its practical application is limited by its high cost and low efficiency. Here, a kind of carbon-coated Co3ZnC nanoparticle (Co3ZnC@C) was synthesized by a simple precipitation-calcination method. As a cocatalyst, Co3ZnC@C was coupled with photocatalyst g-C3N4 to construct a noble metal-free composite photocatalyst Co3ZnC@C/g-C3N4. The experimental results show that the photocatalytic hydrogen production rate of Co3ZnC@C/g-C3N4 is 109 times higher than that of g-C3N4, because Co3ZnC@C, as a co-catalyst supported on the surface of g-C3N4, can improve the charge separation efficiency and accelerate the surface hydrogen evolution reaction rate. The research broadens the application range of metal carbide materials and provides a new way for the design of advanced solar energy conversion photocatalysts.

Key words: zinc cobalt carbide, carbon nitride, composite material, photocatalytic hydrogen evolution, co-catalyst

中图分类号:  O643.36; O644.1; TQ116.2

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