3; visible-light photocatalytic; perovskite compound"/> 3 was a new-style photocatalytic material. Using Er(NO3)3.5H2O, Fe(NO3)3×9H2O, citric acid and urea as the main materials, the ErFeO3 gel was prepared by sol-gel process. Then, the gel was dried in the 80℃ air oven for 48 hours. The xerogel was calcined in the muffle furnace at the temperature of 700-1000℃for preparation ErFeO3samples. The samples were characterized by thermogravimetric and differential scanning calorimetry (TG-DSC), powder X-ray diffraction (XRD), scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FT-IR) and diffuse reflectance spectra (DRS). Using methyl orange as waste water, the photocatalytic activity of ErFeO3 was studied under visible-light. The results showed that the particle size of perovskite structure ErFeO3 was about 80-100 nm and the gap width was about 2.0 eV. Under visible-light, ErFeO3 showed the high visible-light photocatalytic activity for the decomposition of methyl orange. The ErFeO3 photocatalysts which were prepared by sol-gel process had wide application prospect in sewage treatment under visible-light."/>

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Preparation of ErFeO3 by Sol-gel Method and Its Visible-lightPhotocatalytic Activity
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Department of Materials Engineering,Huzhou University,Department of Materials Engineering,Huzhou University,Department of Materials Engineering,Huzhou University,Department of Materials Engineering,Huzhou University,Department of Materials Engineering,Huzhou University

Clc Number:

TG115.3

Fund Project:

Zhejiang Province Natural Science Foundation of China(Y4100471)

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    Abstract:

    Perovskite oxides ErFeO3 was a new-style photocatalytic material. Using Er(NO3)3.5H2O, Fe(NO3)3×9H2O, citric acid and urea as the main materials, the ErFeO3 gel was prepared by sol-gel process. Then, the gel was dried in the 80℃ air oven for 48 hours. The xerogel was calcined in the muffle furnace at the temperature of 700-1000℃for preparation ErFeO3samples. The samples were characterized by thermogravimetric and differential scanning calorimetry (TG-DSC), powder X-ray diffraction (XRD), scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FT-IR) and diffuse reflectance spectra (DRS). Using methyl orange as waste water, the photocatalytic activity of ErFeO3 was studied under visible-light. The results showed that the particle size of perovskite structure ErFeO3 was about 80-100 nm and the gap width was about 2.0 eV. Under visible-light, ErFeO3 showed the high visible-light photocatalytic activity for the decomposition of methyl orange. The ErFeO3 photocatalysts which were prepared by sol-gel process had wide application prospect in sewage treatment under visible-light.

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[Xu Mengying, Tang Peisong, Cao Junwei, Fang Li, Xie Xinyu. Preparation of ErFeO3 by Sol-gel Method and Its Visible-lightPhotocatalytic Activity[J]. Rare Metal Materials and Engineering,2018,47(S2):228~231.]
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History
  • Received:November 30,2017
  • Revised:December 01,2017
  • Adopted:February 01,2018
  • Online: November 01,2018
  • Published: