辽宁石油化工大学学报

辽宁石油化工大学学报 ›› 2023, Vol. 43 ›› Issue (4): 1-7.DOI: 10.12422/j.issn.1672-6952.2023.04.001

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TiO2/Fe2O3纳米复合材料的制备及光催化性能

杜意恩1(), 杨召弟1, 李玉梅2   

  1. 1.晋中学院 化学化工系,山西 晋中 030619
    2.山东省青岛第二卫生学校,山东 青岛 266308
  • 收稿日期:2022-08-02 修回日期:2022-09-05 出版日期:2023-08-25 发布日期:2023-09-04
  • 作者简介:杜意恩(1978⁃),男,博士,教授,从事无机纳米材料的设计、合成及其性能方面的研究;E⁃mail:duyien124@163.com
  • 基金资助:
    山西省应用基础研究计划项目(201901D111303);山西省“1331工程”创新团队项目(PY201817);晋中学院“1331工程”重点创新团队项目(jzxycxd2019005)

Synthesis and Photocatalytic Performance of TiO2/Fe2O3 Composites

Yien Du1(), Zhaodi Yang1, Yumei Li2   

  1. 1.School of Chemistry and Chemical Engineering,Jinzhong University,Jinzhong Shanxi 030619,China
    2.Shandong Qingdao Second Health School,Qingdao Shandong 266308,China
  • Received:2022-08-02 Revised:2022-09-05 Published:2023-08-25 Online:2023-09-04

摘要:

分别以Fe(NO3)3?9H2O和钛酸四丁酯为铁源和钛源,以HF、HAc、NH4F、NH3?H2O、H2O2为形貌控制剂,通过沉淀分离法联合溶胶?凝胶法制备了不同形貌的TiO2/Fe2O3纳米复合材料。用X?射线粉末衍射仪(XRD)和场发射扫描电子显微镜(FESEM)对TiO2/Fe2O3样品的结构和形貌进行了分析,并探究了所合成的TiO2/Fe2O3纳米复合材料在紫外光照射条件下对亚甲基蓝(MB)的降解性能。结果表明,当以NH3?H2O为形貌控制剂时,制备的NH3?H2O?TiO2/Fe2O3纳米复合材料对MB的降解效果最好(82.9%),其光催化活性分别是HF?TiO2/Fe2O3(82.5%)、H2O2?TiO2/Fe2O3(75.7%)、NH4F?TiO2/Fe2O3(72.9%)、HAc?TiO2/Fe2O3(71.8%)、TiO2(53.1%)、Fe2O3(23.1%)和空白样品(6.4%)的1.00、1.10、1.14、1.15、1.56、3.57倍和12.95倍,这归因于其较大的比表面积、梭形形貌、最高的结晶度和合适的异质结结构的协同作用。

关键词: 纳米复合物, 沉淀分离法, 溶胶?凝胶法, 光催化性能

Abstract:

TiO2/Fe2O3 nanocomposites with different morphologies were prepared by precipitation separation method combined with sol?gel method using Fe(NO3)3?9H2O and tetrabutyl titanate as iron and titanium sources, and HF, HAc, NH4F, NH3?H2O, H2O2 as morphology control agents, respectively. The structure and morphology of the TiO2/Fe2O3 samples were characterized by X?ray powder diffraction (XRD) and field emission scanning electron microscope (FESEM), and the degradation performance of the TiO2/Fe2O3 nanocomposites for methylene blue under UV?light irradiation condition was investigated. The results show that the NH3?H2O?TiO2/Fe2O3 nanocomposites prepared with NH3?H2O as the morphology control agent have the best degradation effect on MB, with a degradation rate of 82.9%, which is approximately 1.00, 1.10, 1.14, 1.15, 1.56, 3.57, 12.95 times larger than that of HF?TiO2/Fe2O3 (82.5%), H2O2?TiO2/Fe2O3 (75.7%), NH4F?TiO2/Fe2O3 (72.9%), HAc?TiO2/Fe2O3 (71.8%), TiO2 (53.1%), Fe2O3 (23.1%) and blank (6.4%) samples, respectively. This is attributed to the synergistic effect of its large specific surface area, spindle morphology, highest crystallinity and suitable heterojunction structure.

Key words: Nanocomposite, Precipitation separation, Sol?gel method, Photocatalytic activity

中图分类号: 

引用本文

杜意恩, 杨召弟, 李玉梅. TiO2/Fe2O3纳米复合材料的制备及光催化性能[J]. 辽宁石油化工大学学报, 2023, 43(4): 1-7.

Yien Du, Zhaodi Yang, Yumei Li. Synthesis and Photocatalytic Performance of TiO2/Fe2O3 Composites[J]. Journal of Liaoning Petrochemical University, 2023, 43(4): 1-7.

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