LI Deng-feng, ZHANG Qin-yi, WANG Ai-hua, et al. Study on gas sensitivity of ZnO-WO3 nano-composites[J]. 2006, (3): 22-24. DOI: 10.13873/j.1000-97872006.03.008.
nano-composites are fabricated by doping with four kinds of quality fraction nano-WO
3
into nano-ZnO at various sintering temperature.The effects of doping quality fraction and sintering temperature on phase ingredient and gas sensitivity are studied.It is found that the effect of subordinate phases such as WO
3
on gas sensitivity in the Zn-W-O sensing material is dominant;and comparing to pure nano-ZnO
the sensitivity of the Zn-W-O sensing material doping quality fraction with 30 % weight percentage of WO
3
sintered at 450 ℃
is up to 150 and 16 separately to 200×10
-6
volume fraction of ethanol and benzene.Sensitivities are remarkably enhanced by the interactive catalysis of the acid core and alkali core between WO