High acetone sensitive and reversible P- to N-type switching NO2 sensing properties of Pt@Ga-ZnO core-shell nanoparticles

doi:10.1016/j.snb.2019.03.085

	High acetone sensitive and reversible P- to N-type switching NO2 sensing properties of Pt@Ga-ZnO core-shell nanoparticles
	Gong, Yan 1,2; Wu, Xiaofeng 1,2; Zhou, Xinyuan 1,2; Li, Xiaofei 1,2; Han, Ning 1; Chen, Yunfa 1
刊名	SENSORS AND ACTUATORS B-CHEMICAL
	2019-06-15
卷号	289 页码:114-123
关键词	Ga doping Core-shell nanoparticles Acetone sensing NO2 sensing p-n Sensing transition
ISSN号	0925-4005
DOI	10.1016/j.snb.2019.03.085
英文摘要	The typical core-shell Pt@ZnO, 1 mol% Ga doped Pt@ZnO and 2 mol% Ga doped Pt@ZnO nanoparticles were synthesized and utilized in acetone and NO2 sensing. Among those nanoparticles, 1 mol% Ga doped Pt@ZnO based sensor presents excellent acetone sensitive and interesting reversible switching from P-to N-type NO2 sensing. The response of the 1 mol% Ga doped Pt@ZnO based sensor to 50 ppm acetone is as high as 296, and the detecting concentration limit to acetone and NO2 is as low as 10 ppb and 20 ppb. The analogical binary p-n transition phase diagram was established to understand the NO2-sensing reversible switching as a function of operating temperature (T) and NO2 gas concentration (C). The role of Ga doping in enhancing the sensing property and the mechanism of NO2 p-n sensing transition is elaborated. In conclusion, the doping of Ga into core-shell Pt@ZnO was proved to be a feasible method for fabricating acetone and NO2 sensor, with high sensitivity and selectivity.
资助项目	National Natural Science Foundation of China[51672273] ; National Natural Science Foundation of China[51272253] ; Strategic Project of Science and Technology of Chinese Academy of Sciences[XDB05050000]
WOS关键词	METAL-OXIDE NANOSTRUCTURES ; PERFORMANCE ; SENSORS ; NANOSPHERES ; EFFICIENT ; FILM ; ARCHITECTURES ; TRANSITION ; CUBES ; VOCS
WOS研究方向	Chemistry ; Electrochemistry ; Instruments & Instrumentation
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000463164100014
资助机构	National Natural Science Foundation of China ; Strategic Project of Science and Technology of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/28157]
专题	中国科学院过程工程研究所
通讯作者	Wu, Xiaofeng; Chen, Yunfa
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Gong, Yan,Wu, Xiaofeng,Zhou, Xinyuan,et al. High acetone sensitive and reversible P- to N-type switching NO2 sensing properties of Pt@Ga-ZnO core-shell nanoparticles[J]. SENSORS AND ACTUATORS B-CHEMICAL,2019,289:114-123.
APA	Gong, Yan,Wu, Xiaofeng,Zhou, Xinyuan,Li, Xiaofei,Han, Ning,&Chen, Yunfa.(2019).High acetone sensitive and reversible P- to N-type switching NO2 sensing properties of Pt@Ga-ZnO core-shell nanoparticles.SENSORS AND ACTUATORS B-CHEMICAL,289,114-123.
MLA	Gong, Yan,et al."High acetone sensitive and reversible P- to N-type switching NO2 sensing properties of Pt@Ga-ZnO core-shell nanoparticles".SENSORS AND ACTUATORS B-CHEMICAL 289(2019):114-123.