SnO2 core-shell hollow microspheres co-modification with Au and NiO nanoparticles for acetone gas sensing

SnO2 core-shell hollow microspheres co-modified with Au and NiO nanoparticles ([email protected]2) were successfully fabricated for use as an acetone gas sensor. The SnO2 core-shell hollow microspheres were prepared by a facile chemical precipitation method using tin tetrachloride pentahydrate (SnCl4·5H2O) and 4-methylimidazole as the primary raw materials. The co-modification with Au and NiO nanoparticles was carried out by a simple chemical...