Effects of rare earth element doping on the ethanol gas-sensing performance of three-dimensionally ordered macroporous In2O3. Issue 51 (9th May 2016)

• Record Type: Journal Article
• Authors: Han, Dongmei; Yang, Junjun; Gu, Fubo; Wang, Zhihua
• Is Part Of: RSC advances. Volume 6:Issue 51(2016)
• Page Start: 45085
• Page End: 45092
• Publication Date: 2016-05-09
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra06816b
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Rare earth element-doped 3DOM In2 O3 samples were prepared by a colloidal crystal templating method, and their ethanol sensing properties were investigated. Abstract : Rare earth (Tm, Er, La, Yb and Ce)-doped In2 O3 nanostructures with three-dimensionally ordered macroporous structures (3DOM) were prepared by a colloidal crystal templating method, and their ethanol sensing properties were investigated. Rare earth doping improved the gas response and lowered the optimum operating temperature. Tm-doped 3DOM In2 O3 had the best gas-sensing performance, and the gas sensitivity for 100 ppm ethanol was seven times higher than that of pure 3DOM In2 O3 . The reason for the different sensitivities generated by the five doping elements and the underlying mechanism of the enhanced gas response for the samples were studied.