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溶液燃烧合成LaFe_(1-x)Mg_xO_3超细粉体及其光催化性能(英文) 被引量:4

LaFe_(1-x)Mg_xO_3 Ultrafine Powders Synthesized by Solution Combustion and Its Photocatalytic Performances
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摘要 采用溶液燃烧合成Mg2+掺杂LaFeO3超细粉体,并利用XRD、SEM、BET和UV-VIS分析Mg2+掺杂量对合成粉体的物相组成、微观形貌和光催化性能的影响。结果表明:Mg2+取代Fe3+形成LaFe1-xMgxO3(0≤x≤0.2)有限型固溶体。当掺杂量为0.1时(x=0.1),合成粉体具有最大的比表面积(43.46m2/g)和较小粒径(径向和长度方向分别为100nm和150nm),因此具有最佳的光催化性能,在高压汞灯180min照射下,对甲基橙溶液(10mg/L)的降解率达75.2%,与纯LaFeO3的相比,光降解率增加26.5%,且光催化反应符合一级动力学方程。 Mg2+ doped La Fe O3 ultrafine powders were synthesized by solution combustion method. Effects of Mg2+ doping content on phase composition, microstructure and photocatalytic performances of the synthesized powders were investigated by XRD, SEM, BET, and UV-Vis. The results show that Mg2+ substitutes for Fe3+ to form La Fe1-xMgxO3(0≤x≤0.2) limited solid solution. When Mg2+ doping content is 0.1, La Fe0.9Mg0.1O3 powder has a maximum specific surface area(43.46 m2/g) and smaller particle size(100 nm and 150 nm in diameter and length direction, respectively). It has the best photocatalytic ability with photodegradation efficiency of 75.2% to methyl orange(10 mg/L) under high-pressure mercury lamp irradiation for 180 min. It increases 26.5% than that of the pure LaF eO 3 under the same experimental conditions, and the reaction may be described as the pseudo first order kinetics equation.
出处 《无机材料学报》 SCIE EI CAS CSCD 北大核心 2015年第11期1223-1227,共5页 Journal of Inorganic Materials
基金 International Science&Technology Cooperation Project of China(2013DFA51000) National Natural Science Foundation of China(51462015)
关键词 LAFEO3 Mg2+掺杂 溶液燃烧法 光催化性能 LaFeO3 Mg2+ doping solution combustion photocatalytic performances
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  • 1DanHuang GuangshengLuo LimingYang YujunWang.SYNTHESIS OF MESOPOROUS TiO_2 MATERIALS WITH HIGH SPECIFIC AREA USING INORGANIC ACIDS AS CATALYSTS[J].China Particuology,2005,3(3):176-180. 被引量:5
  • 2Gelin P, Primet M. Appl Catal. 5,2002,39:1-37.
  • 3Gao Z M, Wang R Y. AppLCatal. B, 2010,98:147-153.
  • 4Choudhary TV, Banerjee S, Choudhary VR. Appl. Catal. 4,2002,234:1-23.
  • 5Kimura K,Ohgaki M, Tanaka K, et al. J. Solid. State Chem”1990,87:186-194.
  • 6Shaheen M, Selim M_ J. Therm. Ancd. Calorim” 2000,59:61-70.
  • 7Alegre V, Silva P, Schmal M. Catal. Commun” 2006,7:14-22.
  • 8FerriD,Fomi L. Appl Catal. B,1998,16:119-123.
  • 9Kirchnerova J, Alifanti M,Delmon B. Appl. Catcd. A, 2002,231:65-69.
  • 10Valange S, Beauchaud A,Barrault J,et al. J. Catal2007,251:113-122.

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