Synthesis of tin dioxide (SnO2) hollow nanospheres and its ethanol-sensing performance augmented by gold nanoparticle decoration

Herein, we report the fabrication of ethanol sensors with superior performance using gold (Au) nanoparticles decorated SnO2 hollow nanospheres (Au-SnO2 HNS). The SnO2 hollow nanospheres (SnO2 HNS) were synthesized by a hydrothermal method using carbon nanospheres as a sacrificial template. To improve their ethanol-sensing performance, Au nanoparticles were decorated on their surfaces. Morphological characterization by scanning electron...