炭吸附共沉淀纳米铁酸钐的制备及其可见光催化性能

doi:10.11868/j.issn.1001-4381.2018.000091

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摘要采用炭吸附共沉淀法制备铁酸钐（SmFeO₃）纳米粉体。利用热重分析仪（TG-DTA）、X射线衍射仪（XRD）、紫外-可见分光光度计（UV-Vis）和透射电镜（TEM）等分析方法对样品进行表征。以甲基橙（MO）为目标污染物，镝灯为可见光源，研究SmFeO₃纳米粉体的光催化性能。结果表明：炭吸附共沉淀法合成的SmFeO₃粉体粒径小，分布均匀，团聚较少；SmFeO₃的吸收波长发生红移，且SmFeO₃在紫外光、可见光区域的吸收强度增强。炭吸附共沉淀法制得的SmFeO₃粉体在60 min内降解率达到82%，是沉淀法所得SmFeO₃粉体降解率的2.6倍，光催化效果明显增强。

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	李金星
	汪巧仙
	郭贵宝
	刘金彦

关键词 ：炭吸附, 铁酸钐, 可见光, 光催化

Abstract：SmFeO₃powders were synthesized by carbon adsorption co-precipitation method. The as-prepared samples were characterized by TG-DTA analysis, X-ray diffraction, UV-Vis absorption spectra and transmission electron microscopy, respectively. The photocatalytic activity of SmFeO₃ powders was investigated under visible light irradiation of dysprosium lamp with methyl orange (MO) as the target pollutant. The results show that SmFeO₃ powders are obtained with less agglomeration, small particle size and uniform distribution due to the addition of carbon black. The absorption wavelength of SmFeO₃ shifts toward the long wavelength and the absorption intensity of SmFeO₃ enhances in the ultraviolet and visible regions. The degradation rate of SmFeO₃ powder prepared by carbon adsorption co-precipitation method reaches 82% within 60 min, which is 2.6 times of samples synthesized by precipitation method. The photocatalytic effects are significantly enhanced.

Key words： carbon adsorption SmFeO₃ visible-light photocatalysis

收稿日期: 2018-01-22 出版日期: 2020-01-09

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O643

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通讯作者: 郭贵宝(1970-),男,教授,博士,研究方向:纳米光催化材料等,联系地址:内蒙古包头市昆都仑区内蒙古科技大学化学与化工学院(014010),E-mail:ggb66733@sohu.com E-mail: ggb66733@sohu.com

引用本文:

李金星, 汪巧仙, 郭贵宝, 刘金彦. 炭吸附共沉淀纳米铁酸钐的制备及其可见光催化性能[J]. 材料工程, 2020, 48(1): 150-155.
LI Jin-xing, WANG Qiao-xian, GUO Gui-bao, LIU Jin-yan. Visible light photocatalytic properties of SmFeO₃ powders prepared via carbon adsorption co-precipitation method. Journal of Materials Engineering, 2020, 48(1): 150-155.

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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2018.000091 或 http://jme.biam.ac.cn/CN/Y2020/V48/I1/150

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