广西师范大学学报（自然科学版） ›› 2023, Vol. 41 ›› Issue (3): 210-220.doi: 10.16088/j.issn.1001-6600.2022050903

• 研究论文 • 上一篇    下一篇

CuO/MIL(Cr, Cu)复合材料的制备及其类芬顿催化降解苯酚性能研究

杨文1, 苏迎杰1, 侯东睿2, 罗静1, 孙庆功1, 张孟洋2, 杨豪2, 王剑峰2*   

  1. 1.郑州大学 化工学院, 河南 郑州 450007;
    2.郑州大学 生态与环境学院, 河南 郑州 450007
  • 收稿日期:2022-05-09 修回日期:2022-05-17 出版日期:2023-05-25 发布日期:2023-06-01
  • 通讯作者: 王剑峰(1972—), 女, 河南淇县人, 郑州大学副教授, 博士。E-mail: 1514903022@qq.com
  • 基金资助:
    国家自然科学基金(22178326)

Preparation of CuO/MIL(Cr, Cu) Composite and Its Performance in Fenton-like Catalytic Degradation of Phenol

YANG Wen1, SU Yingjie1, HOU Dongrui2, LUO Jing1, SUN Qinggong1, ZHANG Mengyang2, YANG Hao2, WANG Jianfeng2*   

  1. 1. School of Chemical Engineering, Zhengzhou University, Zhengzhou Henan 450007, China;
    2. School of Ecology and Environment, Zhengzhou University, Zhengzhou Henan, 450007, China
  • Received:2022-05-09 Revised:2022-05-17 Online:2023-05-25 Published:2023-06-01

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摘要： 采用水热煅烧法合成CuO/MIL(Cr, Cu)非均相类芬顿催化剂,对CuO/MIL(Cr, Cu)复合材料进行了XRD、FT-IR、SEM、XPS、BET等表征,结果表明CuO均匀分散在金属有机框架MIL(Cr, Cu)的表面。对不同催化剂催化降解苯酚的性能进行比较。结果表明,当催化剂用量为0.3 g/L,H2O2浓度为50 mmol/L,pH=6,初始底物浓度为30 mg/L时,CuO/MIL(Cr, Cu)复合材料对苯酚的降解效果可达100%,降解效果优于CuO、MIL-101(Cr)。通过自由基猝灭实验和EPR测试等证明·OH是催化体系主要的活性自由基,并给出其可能的催化降解机理。CuO/MIL(Cr, Cu)复合材料可在近中性条件下降解酚类污染物,具有良好的应用前景。

关键词: 非均相催化剂, 类芬顿, 金属有机框架, 氧化铜, 苯酚废水

Abstract: CuO/MIL(Cr, Cu) heterogeneous Fenton-like catalysts were synthesized by hydrothermal calcination. The CuO/MIL(Cr, Cu) composite was characterized by XRD, FT-IR, SEM, XPS, BET, etc. The results showed that CuO was uniformly dispersed on the surface of the metal-organic framework MIL(Cr, Cu). In addition, the performance of different catalysts for the catalytic degradation of phenol were compared. The results of degradation experiments showed that when the catalyst dosage was 0.3 g/L, the H2O2 concentration was 50 mmol/L, pH=6, and the initial substrate concentration was 30 mg/L, the CuO/MIL(Cr, Cu) composite had the best degradation efficiency as high as almost 100%, better than that of CuO and MIL-101(Cr). Finally, the radical quenching experimentand EPR test proved that ·OH was the main active radical in the catalytic system, and the possible catalytic mechanism was proposed. CuO/MIL(Cr, Cu) composite can degrade phenolic pollutants in the near-neutral range and have good application prospects.

Key words: heterogeneous catalyst, Fenton-like, metal organic framework, copper oxide, phenol wastewater

中图分类号:  X703;TQ426.94

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