Ultrasonic cavitation assisted solvothermal synthesis of superparamagnetic zinc ferrite nanoparticles--颗粒学报PARTICUOLOGY

Surinwong, S., & Rujiwatra, A. (2013). Ultrasonic cavitation assisted solvothermal synthesis of superparamagnetic zinc ferrite nanoparticles. Particuology, 11(5), 588–593. https://doi.org/10.1016/j.partic.2012.06.008

Ultrasonic cavitation assisted solvothermal synthesis of superparamagnetic zinc ferrite nanoparticles

Sireenart Surinwong ^a, Apinpus Rujiwatra ^b *

a Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
b Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand

10.1016/j.partic.2012.06.008

Volume 11, Issue 5, October 2013, Pages 588-593

Received 24 February 2012, Revised 21 May 2012, Accepted 12 June 2012, Available online 27 October 2012.

E-mail: apinpus@gmail.com; apinpus@chiangmai.ac.th

Highlights

► Zinc ferrite nanoparticles were synthesized by ultrasonic-assisted solvothermal technique.

► Narrow particle size distributions with average size of ca. 20 nm were obtained.

► Particles showed superparamagnetism with high magnetization of 24.32 emu/g at 1 T.

Abstract

Nanoparticles of cubic zinc ferrites (, a = 8.41(3)–8.44(1) Å) 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 C₂H₅OH–H₂O 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.

Graphical abstract

Keywords

Zinc ferrite; Nanoparticle; Solvothermal; Ultrasonic ;Superparamagnetism

文章导读