无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ
催化材料

铁酸镁光催化剂合成与多种染料降解活性对比研究

  • 刘莹
展开
  • 长春职业技术学院现代农学院,吉林长春 130000
刘莹(1981— ),女,讲师,研究方向为光催化剂表征;E-mail: huanghebi1640628@163.com

收稿日期: 2020-05-13

  网络出版日期: 2020-12-01

基金资助

吉林省教育厅教育改革项目(2015ZCY008)

Synthesis of magnesium ferrite photocatalyst and degradation activity of various dyes

  • Ying Liu
Expand
  • Modern Agricultural College,Changchun Polytechnic,Jilin 130000,China

Received date: 2020-05-13

  Online published: 2020-12-01

摘要

以硝酸镁、硝酸铁和氢氧化钠作为初始材料,采用水热法合成了铁酸镁光催化剂。X射线粉末衍射(XRD)和X射线光电子能谱(XPS)分析表明,合成的铁酸镁为纯的立方相,空间群为Fd-3m(227),晶粒尺寸约为25 nm。通过光学性质分析发现,铁酸镁光催化剂在200~700 nm处具有较强的光吸收能力,其能带值约为2.11 eV。以甲基蓝、罗丹明B和甲基橙为考察对象,研究了铁酸镁光催化剂对3种染料的光催化降解效果。光催化实验表明,铁酸镁光催化剂对甲基蓝具有最佳的降解效果,最佳的催化剂用量为2.5 g/L,最佳的染料质量浓度为200 mg/L。

本文引用格式

刘莹 . 铁酸镁光催化剂合成与多种染料降解活性对比研究[J]. 无机盐工业, 2020 , 52(11) : 103 -107 . DOI: 10.11962/1006-4990.2019-0653

Abstract

Magnesium ferrite photocatalyst was synthesized by hydrothermal method with magnesium nitrate,iron nitrate and sodium hydroxide as initial materials.X-ray powder diffraction(XRD) and X-ray photoelectron spectroscopy(XPS) analysis showed that the synthesized magnesium ferrite was a pure cubic phase with a space group of Fd-3m(227) and a grain size of about 25 nm.Through the analysis of optical properties,it was found that the photocatalyst of magnesium ferrite had strong light absorption capacity at 200~700 nm,and its energy band value was about 2.11 eV.The photocatalytic degradation effici-ency of methyl blue,Rhodamine B and methyl orange of magnesium ferrite photocatalyst was studied.Photocatalytic experi-ments showed that magnesium ferrite photocatalyst had the best degradation efficiency for the methyl blue,the best catalyst dosage was 2.5 g/L,and the best dye concentration was 200 mg/L.

参考文献

[1] 王东. 黄河流域水污染防治问题与对策[J]. 民主与科学, 2018,175(6):26-27.
[2] Mills A, Davies R H, Worsley D. Water purification by semiconduc-tor photocatalysis[J]. Chem.Soc.Rev., 1993,22:417-425.
[3] Hoffmann M R, Martin S T, Choi W, et al. Environmental applicati-ons of semiconductor photocatalysis[J]. Chem.Rev., 1995,95:69-96.
[4] Shahid M, Jingling L, Ali Z, et al. Photocatalytic degradation of me-thylene blue on magnetically separable MgFe2O4 under visible light irradiation[J]. Mater.Chem.Phys., 2013,139:566-571.
[5] Meng L, Bai H Y, Da Z L, et al. Electrospinning synjournal and pho-tocatalytic property of CaFe2O4/MgFe2O4 heterostructure for degrada-tion of tetracycline[J]. Cryst.Res.Technol., 2015,50:244-249.
[6] Verma S, Joy P A, Khollam Y B, et al. Synjournal of nanosized MgFe2O4 powders by microwave hydrothermal method[J]. Mater.Lett., 2004,58(6):1092-1095.
[7] Shen Y, Wu Y, Li X, et al. One-pot synjournal of MgFe2O4 nanosph-eres by solvothermal method[J]. Mater.Lett., 2013,96:85-88.
[8] Li Y N, Chu Y Q, Qin Q Z. Nanocrystalline ZnFe2O4 and Ag-doped ZnFe2O4 films used as new anode materials for Li-ion batteries[J]. J.Electrochem.Soc., 2004,151:A1077-A1083.
[9] 武伦鹏, 赵莲花, 张海明, 等. 光电流法研究TiO2薄膜表面吸附氧对光催化活性的影响[J]. 物理化学学报, 2007,23(5):765-768.
[10] 杨晓红. MgAl2O4:Ce荧光粉辐照合成及发光机理研究[J]. 无机盐工业, 2019,51(9):30-35.
[11] Lin J, Zong R, Zhou M, et al. Photoelectric catalytic degradation of methylene blue by C60-modified TiO2 nanotube array[J]. Appl.Catal.B:Environ., 2009,89(3/4):425-431.
[12] Zhu S, Xu T, Fu H, et al. Synergetic effect of Bi2WO6 photocatalyst with C60 and enhanced photoactivity under visible irradiation[J]. Environ.Sci.Technol., 2007,41(17):6234-6239.
[13] 杨玉萍, 王良广, 张玉涛. 不同制备方法对氧化铁/氧化铝催化剂催化活性的影响研究[J]. 无机盐工业, 2017,49(9):78-81.
[14] 沈昱, 魏浩然, 吴艳波, 等. 铁酸锰纳米球的溶剂热法制备及其可见光催化性能[J]. 大连交通大学学报, 2015,36(2):70-73.
[15] 魏君, 李志奎. 多酸/二氧化钛复合光催化剂的制备及光催化苯胺的研究[J]. 分子科学学报, 2012,28(1):94-98.
[16] Konstantinou I K, Albanis T A. TiO2-assisted photocatalytic degra-dation of azo dyes in aqueous solution:kinetic and mechanistic in-vestigations[J]. Appl.Catal.B:Environ., 2004,49(1):1-14.
[17] 王仕发, 杨华, 县涛, 等. 纳米YMn2O5半导体可见光催化剂[J]. 无机材料学报, 2011,26(11):1164-1168.
[18] 薛红艳. 纳米铁酸钙的光催化活性与催化机理研究[J]. 无机盐工业, 2017,49(9):85-88.
文章导航

/