化工进展 ›› 2023, Vol. 42 ›› Issue (1): 445-456.DOI: 10.16085/j.issn.1000-6613.2022-0497

• 资源与环境化工 • 上一篇    下一篇

UiO-66复合材料用于典型有机污染物吸附和光催化氧化的研究进展

张金辉1(), 张焕1, 朱新锋1(), 宋忠贤1, 康海彦1, 刘红盼2, 邓炜3, 侯广超3, 李桂亭3, 黄真真1,4   

  1. 1.河南城建学院市政与环境工程学院,河南 平顶山 467036
    2.重庆文理学院化学与环境工程学院,环境材料与修复技术重庆市重点实验室,重庆 402160
    3.河南中材环保有限公司,河南 平顶山 467036
    4.郑州大学生态与环境学院,河南 郑州 450001
  • 收稿日期:2022-03-28 修回日期:2022-07-03 出版日期:2023-01-25 发布日期:2023-02-20
  • 通讯作者: 朱新锋
  • 作者简介:张金辉(1987—),男,博士,讲师,研究方向为金属有机骨架材料的制备及VOCs催化氧化。E-mail:jhzhang018@163.com
  • 基金资助:
    河南省高等学校重点科研项目(20B610002);重庆市自然科学基金面上项目(cstc2020jcyj-msxmX0833);重庆市教委科学技术研究项目(KJQN201901310);河南科技攻关项目(202102310280);河南省水体污染与防治重点实验室开放基金(CJSP2021007);“中原英才计划(育才系列)”中原青年拔尖人才(ZYYCYU202012183)

Research progress of UiO-66 materials for adsorption and photocatalytic oxidation of typical organic compounds

ZHANG Jinhui1(), ZHANG Huan1, ZHU Xinfeng1(), SONG Zhongxian1, KANG Haiyan1, LIU Hongpan2, DENG Wei3, HOU Guangchao3, LI Guiting3, HUANG Zhenzhen1,4   

  1. 1.Faculty of Environmental and Municipal Engineering, Henan University of Urban Construction, Pingdingshan 467036, Henan, China
    2.Chongqing Key Laboratory of Environmental Materials & Remediation Technologies, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, Chongqing 402160, China
    3.Sinoma(Henan) Environmental Protection Co. , Ltd. , Pingdingshan 467036, Henan, China
    4.School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China
  • Received:2022-03-28 Revised:2022-07-03 Online:2023-01-25 Published:2023-02-20
  • Contact: ZHU Xinfeng

摘要:

UiO-66系列金属有机骨架(MOFs)材料因具有较高的比表面积、丰富的孔结构、优异的结构稳定性和类半导体特性而广泛应用于污染物的吸附和催化领域。文中指出:液相有机污染物主要通过物理吸附、静电、氢键、π-π相互作用被UiO-66基材料吸附去除,同时由于电性等性质差异,UiO-66基材料可从性质差异显著的多种有机污染物中选择性吸附污染物,而气相有机污染物主要通过氢键或UiO-66基材料孔道被吸附去除,同时环境中的水汽对污染物的吸附去除具有显著影响;针对光催化,由于载流子的快速复合,纯UiO-66基材料具有较低的光催化活性,通过与半导体材料复合可显著提高材料载流子分离速率,同时活性位点高度均匀分散在UiO-66基材料表面,利于光的激发及污染物与活性位点的充分接触,进而显著提高材料的光催化活性。与此同时,本文也提出了UiO-66基材料在有机污染物吸附和去除中的不足之处。最后展望了UiO-66基材料的发展前景。

关键词: 金属有机骨架, 吸附, 光催化, 环境污染

Abstract:

UiO-66-based metal-organic frameworks (MOFs) is widely used in the field of pollutant adsorption and degradation due to its high specific surface area, developed pore structure, excellent structural stability and semiconduction-like properties. The main mechanisms responsible for organic pollutants adsorption by UiO-66-based materials from liquid phase included: physical adsorption, electrostatic interaction, hydrogen bonding and π-π interaction. Meanwhile, organic pollutants adsorption from liquid phase can be adsorbed selectively owing to electrostatic attractions and properties of different organic pollutants. However, the pollutants adsorption from gas phase mainly depended on hydrogen bond and pore structure of absorbent, while vapour can also influence significantly on pollutants adsorption. For photocatalysis, pure UiO-66-based materials exhibit poor photocatalytic activity due to the low efficiency to generate excited charges and transfer photoinduced carriers. Compounding with semiconductors to form heterogeneous photocatalysts provides a way to enhance the separated efficiency of photogenerated carriers. Moreover, the semiconductors uniformly distributed on the surface of UiO-66 are beneficial to the contact between active sites and pollutants, thus promoting the photocatalytic activity of absorbents. Meanwhile, the deficiencies of UiO-66-based materials in the adsorption and photocatalysis were also summarized. Finally, the prospects of UiO-66-based catalytic is proposed, which might provide a positive role in promoting the application of UiO-66 based materials in the study of gas/liquid organic pollutants.

Key words: metal-organic frameworks(MOFs), adsorption, photocatalytic, environmental pollutant

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