One-step synthesis of TiO 2–SnO 2 solid solution nanoparticles in a premixed H 2–air CCVD reactor

Abstract

TiO 2–SnO 2 solid solution nanoparticles with different Ti:Sn molar ratios were prepared in a premixed H 2–air CCVD reactor. These nanoparticles were irregularly shaped aggregates depending on Ti:Sn molar ratios. XRD analyses revealed the formation of single phase solid solutions at low Ti:Sn molar ratios. The FTIR spectra of these nanoparticles exhibited a broad band ~ 370–450 cm − 1 due to the formation of solid solutions, as supported by XRD. The AES depth profile revealed that the Ti xSn 1−xO 2 solid solution (x = 0.33) nanoparticles had the SnO 2-enriched surface layer.