化学学报 ›› 2019, Vol. 77 ›› Issue (2): 153-159.DOI: 10.6023/A18090372 上一篇    下一篇

研究论文

以UiO-66为前驱体的Fe-ZrO2的制备及其可见光降解性能研究

马亚丽, 刘茹雪, 孟双艳, 牛力同, 杨志旺, 雷自强   

  1. 西北师范大学化学化工学院 生态环境相关高分子材料教育部重点实验室 甘肃省高分子材料重点实验室 兰州 730070
  • 收稿日期:2018-09-06 出版日期:2019-02-15 发布日期:2018-10-10
  • 通讯作者: 杨志旺,E-mail:yangzw@nwnu.edu.cn,Tel:0931-7971455; 雷自强,E-mail:leizq@nwnu.edu.cn E-mail:yangzw@nwnu.edu.cn;leizq@nwnu.edu.cn
  • 基金资助:

    项目受到国家自然科学基金(No.21563026)、教育部“长江学者和创新团队发展计划”(No.IRT15R56)和甘肃省基础研究创新群体计划项目(No.1606RJIA324)的资助.

Preparation and Photocatalytic Activity of Fe-ZrO2 Composites from UiO-66 Precursor under Visible Light Irritation

Ma Yali, Liu Ruxue, Meng Shuangyan, Niu Litong, Yang Zhiwang, Lei Ziqiang   

  1. College of Chemistry and Chemical Engineering, Northwest Normal University, Key Laboratory of Eco-Environment-Related Polymer Material of Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, Lanzhou 730070
  • Received:2018-09-06 Online:2019-02-15 Published:2018-10-10
  • Contact: 10.6023/A18090372 E-mail:yangzw@nwnu.edu.cn;leizq@nwnu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (No. 21563026), the Program for Changjiang Scholars and Innovative Research Team in University (No. IRT15R56), and the Innovation Team Basic Scientific Research Project of Gansu Province (No. 1606RJIA324).

金属有机骨架(UiO-66)具有大的比表面积和强的吸附能力,且金属锆离子高度有序地排列在框架中.先采用UiO-66的结构特点使其吸附Fe3+,再通过煅烧前驱体Fe3+/UiO-66的方法成功制备出Fe掺杂的ZrO2纳米光催化剂Fe-ZrO2.通过扫描电子显微镜(SEM)、X射线衍射(XRD)、X射线光电子能谱(XPS)、N2吸附-脱附、红外光谱(FT-IR)和紫外-可见光吸收光谱(UV-vis DRS)等方法对催化剂的形貌和结构进行表征,利用荧光(PL)和电化学阻抗对催化剂的电化学性能进行分析.最后,研究了催化剂对罗丹明B溶液的可见光降解作用,结果表明通过煅烧Fe3+/UiO-66前驱体的方法制备的Fe-ZrO2催化剂,在可见光照射下对罗丹明B的降解率为83%,循环三次后降解率依然能够达到78%,稳定性好.

关键词: UiO-66, Fe-ZrO2, 可见光催化, RhB, 光降解

A new porous crystalline materials Zr-containing organic framework of UiO-66 has a large specific surface area, strong adsorption capacity, and the highly ordered arrangement of metal ions in its crystal structure. In this study, because UiO-66 has a good structural features, Fe-doped nano-ZrO2 photocatalyst of Fe-ZrO2 were successfully prepared by the adsorption of Fe3+ onto UiO-66, and calcination of the precursor of Fe3+/UiO-66, subsequently. The morphology and structure of the catalyst were characterized by scanning electron microscopy (SEM), X-ray diffractometry (XRD), X-ray photoelectron spectroscopy (XPS), N2 adsorption-desorption isotherm, Fourier transform infrared spectroscopy (FT-IR) and UV-Vis absorption spectroscopy (UV-vis DRS). The electrochemical performance of the catalyst was analyzed by fluorescence (PL) and electrochemical impedance spectroscopy. Finally, the photodegradation of rhodamine B solution by the catalysis of Fe-ZrO2 was studied. The results showed that the degradation rate of rhodamine B (RhB) under visible light irritation was 83% in 120 min with the catalyst of Fe-ZrO2 from the calcination of the precursor Fe3+/UiO-66. The catalyst has a promising stability. The degradation rate to RhB could still reach 78% after three cycles.

Key words: UiO-66, Fe-ZrO2, visible-light photocatalysis, RhB, photodegradation