Effects of Fe3+-doping and nano-TiO2/WO3 decoration on the ultraviolet absorption and gas-sensing properties of ZnSnO3 solid particles

Zn1-xFexSnO3+x/2 samples (ZFxSO), composed of quasi-spherical solid particles, were synthesized after the calcination of Zn1-xFexSn(OH)6+x and then decorated by nano-TiO2/WO3. The ethanol sensitive performance of pure ZnSnO3 sample can be enhanced by Fe3+-doping at high temperature. The ZF0.1SO sample (i.e., x = 0.1) exhibits highest gas sensing response to ethanol among the ZFxSO samples at 500 ppm, obtaining a maximum response (Rmax) of 260.8...