Authors: Sung June Cho, Ryong Ryoo
Addresses: National Research Laboratory for Clean Energy Technology, Department of Applied Chemical Engineering, Chonnam National University, Yongbong 300, Bukgu, Gwangju 500 757, Korea. ' Department of Chemistry, Korea Advanced Institute of Science and Technology, Taeduk Science Town, Taejon 305 701, Korea
Abstract: A novel preparation method to control a microstructure and the resulting structure and activity relationship are presented to aim a rational design of the well defined bimetallic nanoparticles. Nanoparticles are engineered inside the supercage of faujasite type zeolite. The reduction mechanism for the bimetallic nanoparticles is proposed based on the results of X-ray absorption fine structure, 129Xe NMR spectrum and transmission electron micrograph. The chemical properties have been modified and also the catalytic performance has been altered through the generation of well defined bimetallic nanoparticles. The principle of the design of bimetallic nanoparticles has also been extended for other open substrates. The state of the art technology for the fabrication method presented here provides advanced firm basis for the development of the bimetallic nanoparticles with novel function.
Keywords: bimetallic nanoparticles; design; XAFS; X-ray absorption fine structure; 129Xe NMR; catalysis; reduction mechanism; microstructure; zeolite; nanotechnology; Korea.
International Journal of Nanotechnology, 2006 Vol.3 No.2/3, pp.194 - 215
Published online: 01 May 2006 *Full-text access for editors Access for subscribers Purchase this article Comment on this article