Acetone Gas Sensing Properties of Au-activated Ni-doped ZnO Nanoparticles Prepared by Coprecipitation Method. Issue 6 (June 2018)

• Record Type: Journal Article
• Authors: Jinxiao, Wang; Jun, Yang; Ning, Han; Jianfeng, Yang
• Is Part Of: Xi you jin shu cai liao yu gong cheng. Volume 47:Issue 6(2018)
• Page Start: 1682
• Page End: 1688
• Publication Date: 2018-06
• Subjects: acetone gas sensor -- Ni doped ZnO -- Au-activation -- response-recovery time; Nonferrous metals -- Periodicals; 669.05
• DOI: 10.1016/S1875-5372(18)30150-4
• Languages: English
• ISSNs: 1875-5372

Abstract

Abstract: Pure and Ni-doped ZnO were prepared by a coprecipitation method, and the gas sensing properties were compared using 20 μg/g acetone. The results show that the optimal Ni doping concentration is 1 mol% with the highest response of 12 μg/g to 20 μg/g acetone. On this basis, Au was decorated onto Ni-doped ZnO to further improve the gas response. The results show that 0.03 mol% Au activated 1 mol% Ni-doped ZnO has the highest acetone gas response (about 17 μg/g to 20 μg/g) in all sensors, and it also maintains high selectivity over ethanol, formaldehyde and benzene, and rapid response-recovery time of <10 s.