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High acetone sensitive and reversible P- to N-type switching NO2 sensing properties of Pt@Ga-ZnO core-shell nanoparticles
Gong, Yan1,2; Wu, Xiaofeng1,2; Zhou, Xinyuan1,2; Li, Xiaofei1,2; Han, Ning1; Chen, Yunfa1
2019-06-15
Source PublicationSENSORS AND ACTUATORS B-CHEMICAL
ISSN0925-4005
Volume289Pages:114-123
AbstractThe 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.
KeywordGa doping Core-shell nanoparticles Acetone sensing NO2 sensing p-n Sensing transition
DOI10.1016/j.snb.2019.03.085
Language英语
WOS KeywordMETAL-OXIDE NANOSTRUCTURES ; PERFORMANCE ; SENSORS ; NANOSPHERES ; EFFICIENT ; FILM ; ARCHITECTURES ; TRANSITION ; CUBES ; VOCS
Funding ProjectNational 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 Research AreaChemistry ; Electrochemistry ; Instruments & Instrumentation
WOS SubjectChemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation
Funding OrganizationNational Natural Science Foundation of China ; Strategic Project of Science and Technology of Chinese Academy of Sciences
WOS IDWOS:000463164100014
PublisherELSEVIER SCIENCE SA
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28157
Collection中国科学院过程工程研究所
Corresponding AuthorWu, Xiaofeng; Chen, Yunfa
Affiliation1.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
Recommended Citation
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.
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