Broad-spectrum UV absorption and gas-sensing improvement of ZnSnO3 cubic particles based on Al-doping and nano-TiO2 decoration

Al-doped ZnSn(OH)6 crystalline precursors (Zn1-xAlxSn(OH)6+x) were synthesized with 4 wt% triethanolamine (TEOA). After dehydration of the precursors at high temperature (HT), the resulting Zn1-xAlxSnO3+x/2 (denoted as ZAxSO) samples with amorphous structure were obtained. The phase structure transition can be significantly distinguished by their XRD patterns. The pristine ZnSnO3 sample composed of microscale particles shows an excellent...