Ultrasonic cavitation assisted solvothermal synthesis of superparamagnetic zinc ferrite nanoparticles  

作　　者：Sireenart Surinwonga Apinpus Rujiwatrab 

机构地区：[1]Department of Chemistry and Center of Excellence for Innovation in Chemistry,Faculty of Science,Chiang Mai University,Chiang Mai 50200,Thailand [2]Department of Chemistry,Faculty of Science,Chiang Mai University,Chiang Mai 50200,Thailand

出　　处：《Particuology》2013年第5期588-593,共6页颗粒学报（英文版）

基　　金：supported by the Thailand Research Fund;the Development and Promotionfor Science and Technology Talents Project

摘　　要：Nanoparticles of cubic zinc ferrites （fd3m, a= 8.41（3）-8.44（1）A） were synthesized as a single phase by an ultrasonic cavitation-assisted solvothermal technique using ethyl alcohol-water mixed solvents at temperatures of 150 ~C or higher for 18 h or more. The influences of the ultrasonic cavitation and the use of C2HsOH-H20 mixed solvents in diminishing average particle size and in improving particle size uniformity were illustrated. The largest average size of nanoparticles obtained was 20 nm as measured from SEM photographs, with crystallite size of approximately 10 nm as estimated from XRD results. The room-temperature field-dependent magnetization of the nanoparticles obtained showed a characteristic S feature with magnetization of 24.32 emu/g at 1 T.Nanoparticles of cubic zinc ferrites （fd3m, a= 8.41（3）-8.44（1）A） were synthesized as a single phase by an ultrasonic cavitation-assisted solvothermal technique using ethyl alcohol-water mixed solvents at temperatures of 150 ~C or higher for 18 h or more. The influences of the ultrasonic cavitation and the use of C2HsOH-H20 mixed solvents in diminishing average particle size and in improving particle size uniformity were illustrated. The largest average size of nanoparticles obtained was 20 nm as measured from SEM photographs, with crystallite size of approximately 10 nm as estimated from XRD results. The room-temperature field-dependent magnetization of the nanoparticles obtained showed a characteristic S feature with magnetization of 24.32 emu/g at 1 T.

关 键 词：Zinc ferriteNanoparticleSolvothermalUltrasonicSuperparamagnetism 

分 类 号：TM277[一般工业技术—材料科学与工程] TB383.1[电气工程—电工理论与新技术]