Carbon-coated SnO2 nanobelts and nanoparticles by single catalytic step.

Carreño, Neftalí Lenin Villarreal; Nunes, Michael Ramos; Garcia, Irene Teresinha Santos; Orlandi, Marcelo Ornaghi; Fajardo, Humberto Vieira; Longo, Elson

Carbon-coated SnO2 nanobelts and nanoparticles by single catalytic step.

Date

2009

Authors

Carreño, Neftalí Lenin Villarreal

Nunes, Michael Ramos

Garcia, Irene Teresinha Santos

Orlandi, Marcelo Ornaghi

Fajardo, Humberto Vieira

Longo, Elson

Abstract

Several types of carbon nanostructures (amorphous and graphitic), for the coating of SnO2 nanobelts and nanoparticles were obtained by a single catalytic process, during methane, natural gas, and methanol decomposition using the reactivity of surface-modified SnO2 nanostructure as a nanotemplate. The nanostructured catalyst templates were based on transition metal nanoparticles supported on SnO2 nanobelts previously prepared by a carbothermal reduction process. Carbon-coated SnO2 nanopowders were also successfully synthesized for the fabrication of carbon spheres. The carbon coating process and yield, along with the nature of the nanostructured carbon, are strongly influenced by the chemically modified surface of the SnO2 nanostructure template and the chemical reaction gas composition. The preliminary catalytic activity and gas-sensing properties of these novel materials based on metal nanoparticles and carbon-coated SnO2 were determined.

Keywords

SnO2 nanobelts, Carbon coating nanostructure, Catalytic process

Citation

CARREÑO, N. L. V. et al. Carbon-coated SnO2 nanobelts and nanoparticles by single catalytic step. Journal of Nanoparticle Research, v. 11, p. 955-963, 2009. Disponível em: <https://link.springer.com/article/10.1007%2Fs11051-008-9492-y>. Acesso em: 20 abr. 2017.