中国炼油与石油化工 ›› 2022, Vol. 24 ›› Issue (1): 59-67.

• Catalyst Research • 上一篇    下一篇

Fe2O3复合BiOCl的制备及其光催化性能研究

刘晓庆,王紫莎,胡宇星,王海芳   

  1. 中北大学
  • 收稿日期:2022-02-10 修回日期:2021-07-28 出版日期:2022-03-30 发布日期:2022-03-30
  • 通讯作者: 刘晓庆 E-mail:519800023@qq.com
  • 基金资助:
    BiMO4(M=Nb,Ta)/N2Sx(N=Mo,Sn,Bi)异质结构筑及水环境药物残留的光催化深度降解

Assembling Fe2O3/BiOCl Composite for Highly Effective Degradation of Water Pollutants under Visible-Light Irradiation

Liu Xiaoqing1,   

  • Received:2022-02-10 Revised:2021-07-28 Online:2022-03-30 Published:2022-03-30
  • Contact: Liu Xiaoqing E-mail:519800023@qq.com

摘要: Fe2O3 was synthesized by the solvothermal method, and the synthesized Fe2O3 was added in the process of preparing BiOCl by hydrolysis, and then Fe2O3/BiOCl photocatalytic materials with different composite ratios were prepared. The optimal Fe2O3/BiOCl (1Fe/50Bi) sample showed a highest photocatalytic efficiency for cationic dyes (Rhodamine B) and anionic dye (methyl orange) degradation irradiated with visible light, as compared with that of a bare BiOCl catalyst. Meanwhile, radical capturing experiments indicated that the photo-induced holes (h+) is the main active species. X-ray powder diffraction and ultraviolet-visible diffuse reflectance spectroscopy were used to characterize the structural and optical properties, which proved that Fe2O3 was successfully composited to the BiOCl surface and effectively reduced the bandgap of BiOCl. More importantly, the optimal 1Fe/50Bi sample shows the highest photocatalytic efficiency for tetracycline (TC) degradation (98%) irradiated with visible light, as compared with that of a bare BiOCl catalyst. Consequently, the Fe2O3/BiOCl photocatalyst have potential applications in environmental purification.

关键词: Fe2O3, BiOCl, 光催化剂, 复合

Abstract: Fe2O3 was synthesized by the solvothermal method, and the synthesized Fe2O3 was added in the process of preparing BiOCl by hydrolysis, and then Fe2O3/BiOCl photocatalytic materials with different composite ratios were prepared. The optimal Fe2O3/BiOCl (1Fe/50Bi) sample showed a highest photocatalytic efficiency for cationic dyes (Rhodamine B) and anionic dye (methyl orange) degradation irradiated with visible light, as compared with that of a bare BiOCl catalyst. Meanwhile, radical capturing experiments indicated that the photo-induced holes (h+) is the main active species. X-ray powder diffraction and ultraviolet-visible diffuse reflectance spectroscopy were used to characterize the structural and optical properties, which proved that Fe2O3 was successfully composited to the BiOCl surface and effectively reduced the bandgap of BiOCl. More importantly, the optimal 1Fe/50Bi sample shows the highest photocatalytic efficiency for tetracycline (TC) degradation (98%) irradiated with visible light, as compared with that of a bare BiOCl catalyst. Consequently, the Fe2O3/BiOCl photocatalyst have potential applications in environmental purification.

Key words: Fe2O3, BiOCl, photocatalyst, composite