应用化学 ›› 2023, Vol. 40 ›› Issue (7): 1034-1043.DOI: 10.19894/j.issn.1000-0518.230028

• 研究论文 • 上一篇    下一篇

过硫酸盐增强花状MnCo2O4可见光降解性能

郑建华1(), 管振萍2, 刘国煜1, 曹向禹1, 郑顺姬1, 关美艳1   

  1. 1.齐齐哈尔大学轻工与纺织学院,齐齐哈尔 161000
    2.齐齐哈尔大学机电工程学院,齐齐哈尔 161000
  • 收稿日期:2023-02-20 接受日期:2023-05-23 出版日期:2023-07-01 发布日期:2023-07-19
  • 通讯作者: 郑建华
  • 基金资助:
    黑龙江省省属高等学校基本科研业务费项目(135409214);黑龙江省普通本科高等学校青年创新人才培养项目(UNPYSCT-2020071)

Enhanced Photodegradation Performance of Flower-like MnCo2O4 with Persulfate Under Visible Light

Jian-Hua ZHENG1(), Zhen-Ping GUAN2, Guo-Yu LIU1, Xiang-Yu CAO1, Shun-Ji ZHENG1, Mei-Yan GUAN1   

  1. 1.College of Light Industry and Textile,Qiqihar University,Qiqihar 161000,China
    2.College of Mechanical and Electrical Engineering,Qiqihar University,Qiqihar 161000,China
  • Received:2023-02-20 Accepted:2023-05-23 Published:2023-07-01 Online:2023-07-19
  • Contact: Jian-Hua ZHENG
  • About author:jianhua0904@163.com
  • Supported by:
    Heilongjiang Basic Scientific Research Project of Provincial Higher Education (No.?135409214) and Heilongjiang Youth Innovative Talents Training Program for Universities(UNPYSCT-2020071)

摘要:

为了充分利用光降解技术与过硫酸盐氧化技术耦合的优势,成功制备了具有3D中空结构的花状MnCo2O4催化剂(HF-MnCo2O4)。在可见光照射下,HF-MnCo2O4能够有效地活化过硫酸钾(PS)。将PS引入光催化体系(HF-MnCo2O4/PS/Vis),可以降低光生e-/h+对的复合机率,同时也增加该体系的活性物种数量。以亚甲基蓝(MB)为目标物,考察了HF-MnCo2O4/PS/Vis耦合体系的光催化性能。得益于MnCo2O4独特的分级结构及MnCo2O4和PS之间协同效应,HF-MnCo2O4/PS/Vis耦合体系对MB展现出较好的降解去除能力,可见光照射50 min对MB的去除率达到96.8%。根据自由基捕获实验和能带分析,系统地探讨了HF-MnCo2O4/PS/Vis耦合体系光降解性能增强的机制。

关键词: 花状钴酸锰, 过硫酸钾, 可见光降解, 亚甲基蓝

Abstract:

The 3D hierarchical hollow flower-like MnCo2O4 (HF-MnCo2O4) is prepared successfully to combine the advantages of the photocatalytic degradation and persulfate (PS) oxidation. The obtained HF-MnCo2O4 could effectively activate PS under visible irradiation. The photocatalytic activities for the coupled system containing of HF-MnCo2O4 and PS are investigated by the photodegradation of methylene blue (MB) under visible light irradiation. The introduction of PS not only inhibits the recombination of photoexcited e-/h + pairs, but also generates more actived species in the system. Benefiting from the unique construction and the synergistic effect between of HF-MnCo2O4 and PS, the removal ratio of HF-MnCo2O4/PS/Vis system for MB reaches to 95.8%. The enhanced mechanism for mineralization contaminant of HF-MnCo2O4/PS/Vis system is discussed in details.

Key words: Flower-like MnCo2O4, Persulfate, Visible light degradation, Methylene blue

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