title: Metallic Sn spheres and SnO2@C core-shells by anaerobic and aerobic catalytic ethanol and CO oxidation reactions over SnO2 nanoparticles.
abstract: SnO2 has been studied intensely for applications to sensors, Li-ion batteries and solar cells. Despite this, comparatively little attention has been paid to the changes in morphology and crystal phase that occur on the metal oxide surface during chemical reactions. This paper reports anaerobic and aerobic ethanol and CO oxidation reactions over SnO2 nanoparticles (NPs), as well as the subsequent changes in the nature of the NPs. Uniform SnO2@C core-shells (10 nm) were formed by an aerobic ethanol oxidation reaction over SnO2 NPs. On the other hand, metallic Sn spheres were produced by an anaerobic ethanol oxidation reaction at 450 °C, which is significantly lower than that (1200 °C) used in industrial Sn production. Anaerobic and aerobic CO oxidation reactions were also examined. The novelty of the methods for the production of metallic Sn and SnO2@C core-shells including other anaerobic and aerobic reactions will contribute significantly to Sn and SnO2-based applications.
authors: School of Chemistry and Biochemistry, Yeungnam University, Gyeongsan 38541, Republic of Korea.
authors: Won Joo
authors: WJ
authors: Kim
authors: Center for Research Facilities &Department of Materials Science and Engineering, Chungnam National University, Daejeon 34134, Republic of Korea.
authors: Sung Woo
authors: SW
authors: Lee
authors: School of Chemistry and Biochemistry, Yeungnam University, Gyeongsan 38541, Republic of Korea.
authors: Youngku
authors: Y
authors: Sohn