3,可見光催化,鈣鈦礦復(fù)合物"/> 3是一種新型的光催化材料。本文以Er(NO3)3.5H2O、Fe(NO3)3×9H2O、檸檬酸和尿素為主要原料,采用溶膠-凝膠法制備得到ErFeO3的凝膠,將凝膠于80 ℃烘箱中48 h得到干凝膠,然后將干凝膠于700-1000 ℃煅燒制備ErFeO3。通過熱重-差示掃描量熱法(TG-DSC)、X射線衍射譜(XRD)、掃描電鏡(SEM)、傅立葉紅外光譜(FT-IR)和漫反射譜(DRS)等對ErFeO3進(jìn)行表征。以甲基橙溶液為模擬污水,研究了ErFeO3的可見光催化性能。結(jié)果表明：制備得到了鈣鈦礦結(jié)構(gòu)的ErFeO3,其平均晶粒粒徑為80-100 nm左右,帶隙寬度為2.0 eV。在可見光光照下, ErFeO3對甲基橙表現(xiàn)出了優(yōu)良的可見光催化活性。溶膠-凝膠法制備的ErFeO3在光催化降解有機(jī)污染物領(lǐng)域具有實(shí)際應(yīng)用前景。"/>

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溶膠-凝膠法制備ErFeO3及其可見光催化性能研究
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湖州師范學(xué)院材料工程系,湖州師范學(xué)院材料工程系,湖州師范學(xué)院材料工程系,湖州師范學(xué)院材料工程系,湖州師范學(xué)院材料工程系

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TG115.3

基金項(xiàng)目:

浙江省自然科學(xué)基金(Y4100471)


Preparation of ErFeO3 by Sol-gel Method and Its Visible-lightPhotocatalytic Activity
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Affiliation:

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

Fund Project:

Zhejiang Province Natural Science Foundation of China(Y4100471)

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    摘要:

    鈣鈦礦結(jié)構(gòu)的ErFeO3是一種新型的光催化材料。本文以Er(NO3)3.5H2O、Fe(NO3)3×9H2O、檸檬酸和尿素為主要原料,采用溶膠-凝膠法制備得到ErFeO3的凝膠,將凝膠于80 ℃烘箱中48 h得到干凝膠,然后將干凝膠于700-1000 ℃煅燒制備ErFeO3。通過熱重-差示掃描量熱法(TG-DSC)、X射線衍射譜(XRD)、掃描電鏡(SEM)、傅立葉紅外光譜(FT-IR)和漫反射譜(DRS)等對ErFeO3進(jìn)行表征。以甲基橙溶液為模擬污水,研究了ErFeO3的可見光催化性能。結(jié)果表明：制備得到了鈣鈦礦結(jié)構(gòu)的ErFeO3,其平均晶粒粒徑為80-100 nm左右,帶隙寬度為2.0 eV。在可見光光照下, ErFeO3對甲基橙表現(xiàn)出了優(yōu)良的可見光催化活性。溶膠-凝膠法制備的ErFeO3在光催化降解有機(jī)污染物領(lǐng)域具有實(shí)際應(yīng)用前景。

    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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許夢穎,唐培松,曹峻威,方莉,謝欣瑜.溶膠-凝膠法制備ErFeO3及其可見光催化性能研究[J].稀有金屬材料與工程,2018,47(S2):228~231.[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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  • 收稿日期:2017-11-30
  • 最后修改日期:2017-12-01
  • 錄用日期:2018-02-01
  • 在線發(fā)布日期: 2018-11-01
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