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Gold-tin co-sensitized ZnO layered porous nanocrystals: enhanced responses and anti-humidity
Yao, Ming-Shui1,2; Cao, Lin-An2; Hou, Guo-Lin1; Cai, Min-Lan2; Xiu, Jing-Wei2; Fang, Chen-Hao2; Yuan, Fang-Li1; Chen, Yun-Fa1
Source PublicationRSC ADVANCES

High responses and good selectivity are key sensing properties of metal oxide (MOX) gas sensors. However, it is still a major challenge for a single MOX gas sensor to achieve both of them. Specially, the research in the field of high performance gas sensors has been hindered by negative effects of the typical interference, relative humidity ( RH). In this paper, we report the successful preparation of gold-tin co-sensitized ZnO layered porous nanocrystals (Au-5Sn-ZLPCs) via a sequential solvothermal reaction and depositionreduction method. Based on Sn dopants sensitized ZLPCs, the introduction of Au decoration can act as a secondary sensitized element on the crystal surfaces of ZnO. The special synergy between noble metals and oxides can introduce additional catalytic effects to further improve sensing properties. As a result of Au-Sn co-sensitization, sensing properties of sensors towards reducing VOC gas were significantly enhanced, while those towards oxidizing ozone gas were different to each other. Besides the typical sensing properties including responses, operating temperature, response & recovery properties, etc., Au-Sn co-sensitized samples significantly reduced negative effects of RH on responses to both reducing and oxidizing gases (good anti-humidity).

WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS KeywordGas-sensing Properties ; Hierarchical Structures ; Sno2 Nanoparticles ; Thermal Plasma ; Thin-films ; Sensor ; Performance ; Nanowires ; Nanostructures ; Nanoclusters
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China(51402293 ; Natural Science Foundation of Fujian Province(2015J01230) ; 21401193 ; 21550110194)
WOS IDWOS:000399244200027
Citation statistics
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Zhongguancun Beiertiao 1 Hao, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Peoples R China
Recommended Citation
GB/T 7714
Yao, Ming-Shui,Cao, Lin-An,Hou, Guo-Lin,et al. Gold-tin co-sensitized ZnO layered porous nanocrystals: enhanced responses and anti-humidity[J]. RSC ADVANCES,2017,7(33):20273-20280.
APA Yao, Ming-Shui.,Cao, Lin-An.,Hou, Guo-Lin.,Cai, Min-Lan.,Xiu, Jing-Wei.,...&Chen, Yun-Fa.(2017).Gold-tin co-sensitized ZnO layered porous nanocrystals: enhanced responses and anti-humidity.RSC ADVANCES,7(33),20273-20280.
MLA Yao, Ming-Shui,et al."Gold-tin co-sensitized ZnO layered porous nanocrystals: enhanced responses and anti-humidity".RSC ADVANCES 7.33(2017):20273-20280.
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