Advances in Engineering Advances in Engineering features breaking research judged by Advances in Engineering advisory team to be of key importance in the Engineering field. Papers are selected from over 10,000 published each week from most peer reviewed journals.
Superlattices and Microstructures, Volume 69, May 2014, Pages 226-230.
Nhlakanipho Mntungwa, Pullabhotla V.S.R. Rajasekhar, Karthik Ramasamy, Neerish Revaprasadu.
Department of Chemistry, University of Zululand, Private Bag X1001, KwaDlangezwa 3886, Empangeni, KZN, South Africa and
Center for Materials for Information Technology, The University of Alabama, Tuscaloosa, AL 35487, USA.
Abstract
Monodisperse nanocrystals of Bi2Se3 and Bi2Te3 capped with alkylamines have been synthesized via facile solution based method. The method involves reduction of selenium or tellurium using sodium borohydride, followed by thermolysis in an alkylamine at high temperature. Spherical shaped Bi2Se3 nanocrystals were obtained at 190 °C, whereas the reaction at 270 °C, yielded faceted nanocrystals. Similarly, spherical Bi2Te3nanocrystals were obtained at all temperatures with hexadecylamine and oleylamine capping agents.
