Preparation of Ce~(3+)doped Bi_2O_3 hollow needle-shape with enhanced visible-light photocatalytic activity
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  • 英文篇名:Preparation of Ce~(3+)doped Bi_2O_3 hollow needle-shape with enhanced visible-light photocatalytic activity
  • 作者:Wenwen ; Zhang ; Shaomin ; Gao ; Donghui ; Chen
  • 英文作者:Wenwen Zhang;Shaomin Gao;Donghui Chen;College of Environmental Science and Engineering, Donghua University;College of Chemical and Environmental Engineering, Shanghai Institute of Technology;
  • 英文关键词:Needle-shape;;Bi_2O_3;;Precipitation method;;Tetracycline;;Rare earths
  • 中文刊名:YXTB
  • 英文刊名:稀土学报(英文版)
  • 机构:College of Environmental Science and Engineering, Donghua University;College of Chemical and Environmental Engineering, Shanghai Institute of Technology;
  • 出版日期:2019-06-26
  • 出版单位:Journal of Rare Earths
  • 年:2019
  • 期:v.37
  • 基金:Project supported by the Capacity Building Program of Shanghai Local Universities(12160503600)
  • 语种:英文;
  • 页:YXTB201907008
  • 页数:6
  • CN:07
  • ISSN:11-2788/TF
  • 分类号:56-61
摘要
Ce~(3+) doped Bi_2O_3 hollow needle-shape with enhanced visible-light photocatalytic activity was successfully prepared via the method of chemical precipitation using Bi(NO_3)·5H_2O and Ce(NO_3)_3·6H_2O as the source of bismuth and cerium, HNO_3 as solvent and NaOH as precipitants, respectively and after calcination at 500 ℃ for 2 h. The morphology and elemental composition,crystal form,purity and specific surface area of the hollow needle Bi_2O_3 were characterized by SEM-EDS, XRD, BET and FT-IR. The photocatalytic properties of the as-obtained samples were measured by UV-vis diffuse reflection spectroscopy and photochemical reactor. As a result, the obtained Bi_2O_3 hollow needle-shape doped with 5 wt% Ce shows good morphology, α-phase, stronger absorbent for visible light and good photocatalytic property. Under the simulated visible light of 300 W, the photodegradation rate of tetracycline over HNBCe can reach to 89.1%,which is higher than that of commercial Bi_2O_3 nanoparticles and Bi_2O_3 hollow needle-shape.
        Ce~(3+) doped Bi_2O_3 hollow needle-shape with enhanced visible-light photocatalytic activity was successfully prepared via the method of chemical precipitation using Bi(NO_3)·5H_2O and Ce(NO_3)_3·6H_2O as the source of bismuth and cerium, HNO_3 as solvent and NaOH as precipitants, respectively and after calcination at 500 ℃ for 2 h. The morphology and elemental composition,crystal form,purity and specific surface area of the hollow needle Bi_2O_3 were characterized by SEM-EDS, XRD, BET and FT-IR. The photocatalytic properties of the as-obtained samples were measured by UV-vis diffuse reflection spectroscopy and photochemical reactor. As a result, the obtained Bi_2O_3 hollow needle-shape doped with 5 wt% Ce shows good morphology, α-phase, stronger absorbent for visible light and good photocatalytic property. Under the simulated visible light of 300 W, the photodegradation rate of tetracycline over HNBCe can reach to 89.1%,which is higher than that of commercial Bi_2O_3 nanoparticles and Bi_2O_3 hollow needle-shape.
引文
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