辽宁石油化工大学学报 ›› 2026, Vol. 46 ›› Issue (3): 33-41.DOI: 10.12422/j.issn.1672-6952.2026.03.005

• 材料科学与新能源 • 上一篇    下一篇

基于金属有机框架热解的Co掺杂TiO2的制备及其光催化性能

王兆阳(), 郭定科, 陈常东, 王芳芳()   

  1. 辽宁石油化工大学 石油化工学院,辽宁 抚顺 113001
  • 收稿日期:2025-04-29 修回日期:2025-06-10 出版日期:2026-06-25 发布日期:2026-06-10
  • 通讯作者: 王芳芳
  • 作者简介:王兆阳(2000-),男,硕士研究生,从事光催化材料方面的研究;E⁃mail:why20000501@qq.com
  • 基金资助:
    教育部“春晖计划”合作科研项目(2020703?8);国家留学基金委公派访问学者面上项目(CSC202008210025);辽宁省教育厅项目(JYTMS20231424)

Synthesis of Co⁃Doped TiO2 via Pyrolysis of Metal Organic Framework for Photoelectrocatalysis Performance

Zhaoyang WANG(), Dingke GUO, Changdong CHEN, Fangfang WANG()   

  1. School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China
  • Received:2025-04-29 Revised:2025-06-10 Published:2026-06-25 Online:2026-06-10
  • Contact: Fangfang WANG

摘要:

半导体掺杂是构建杂质能级、减小带隙,进而促进半导体材料光电催化性能的有效方法。设计了一种金属掺杂半导体材料的制备方法,将过渡金属Co与金属有机框架(MOF)MIL?125的阴离子配体通过配位作用相结合,采用热解工艺制备Co掺杂TiO2材料,并对其光催化性能进行了研究。结果表明,Co掺杂后的TiO2展现出更高的光电流密度(9.87 μA/cm2),是未掺杂TiO2的3.8倍;降解反应速率常数从掺杂前的0.041 min?1提升至掺杂后的0.063 min?1;引入的Co物种不仅拓宽了TiO2的可见光吸收范围,而且在其晶格中诱导形成新的杂质能级,进而促进了光生电子的有效迁移,并有效抑制了光生电子?空穴对的复合。

关键词: MOF热解, Co掺杂, TiO2, 光电催化

Abstract:

Semiconductor doping can promote the photoelectrocatalytic application of semiconductor materials by constructing impurity energy levels and reducing the band gap. In this paper, we designed a preparation method for metal?doped semiconductor materials. The transition metal Co was combined with the anionic ligand of the metal?organic framework (MOF)MIL?125 through coordination. Then, the Co?doped TiO2 was obtained through pyrolysis, and its performance in photocatalysis was studied. The results showed that the co?doped TiO2 exhibits a high photocurrent density (9.87 μA/cm2), which is 3.8 times of the undoped TiO2. Meanwhile, the degradation reaction rate constant also significantly increases from 0.041 min?1 before doping to 0.063 min?1 after doping. The incorporation of Co species not only extends the visible?light absorption edge of TiO2 but also introduces well?defined impurity energy levels within its bandgap, thereby facilitating efficient separation and migration of photogenerated charge carriers while significantly suppressing electron?hole recombination.

Key words: MOF pyrolysis, Co?doped, TiO2, Photoelectrocatalysis

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引用本文

王兆阳, 郭定科, 陈常东, 王芳芳. 基于金属有机框架热解的Co掺杂TiO2的制备及其光催化性能[J]. 辽宁石油化工大学学报, 2026, 46(3): 33-41.

Zhaoyang WANG, Dingke GUO, Changdong CHEN, Fangfang WANG. Synthesis of Co⁃Doped TiO2 via Pyrolysis of Metal Organic Framework for Photoelectrocatalysis Performance[J]. Journal of Liaoning Petrochemical University, 2026, 46(3): 33-41.

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链接本文: https://journal.lnpu.edu.cn/CN/10.12422/j.issn.1672-6952.2026.03.005

               https://journal.lnpu.edu.cn/CN/Y2026/V46/I3/33