Abstract
Nanocrystalline bismuth orthoferrite was synthesized by heat treatment of hydroxides co-precipitated in a free impinging-jets microreactor (FIJMR). The formation of BiFeO3 nanoparticles without other phase impurities, with a narrow crystal size distribution and an average crystal size of about 20 nm, is shown to be possible after heat treatment at 420–440 °C of the hydroxides co-precipitated in a FIJMR. The BiFeO3 nanoparticles obtained under these conditions are single-crystalline. This effect is attributed to the crucial intensification of mixing process compared to the usual types of reactors: the energy dissipation rate for FIJMR estimated as being in the range of 107–108 W/kg, which is several orders of magnitude higher than in almost all types of reactors, and is comparable with the level achieved when using ultrasonic generators. The sizes of the nanocrystals are shown to be consistent with the sizes of the nanoparticles that can be formed in Kolmogorov microvortices that are formed when jets of reagent solutions collide.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Chemical Engineering and Processing - Process Intensification
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
