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Bilayer Au nanoparticle-decorated WO3 porous thin films: On-chip fabrication and enhanced NO2 gas sensing performances with high selectivity
Zhang, Hongwen1; Wang, Yingying1; Zhu, Xiaoguang1; Li, Yue1; Cai, Weiping1,2
2019-02-01
Source PublicationSENSORS AND ACTUATORS B-CHEMICAL
ISSN0925-4005
Volume280Pages:192-200
Corresponding AuthorZhang, Hongwen(hwzhang@issp.ac.cn) ; Cai, Weiping(wpcai@issp.ac.cn)
AbstractWe present the on-chip fabrication of bilayer Au NP-decorated WO3 nanoporous thin films (B-Au/WO3) via layer-by-layer stacking of a sacrificial colloidal template with periodic Au sputtering deposition. Technical analysis shows that the B-Au/WO3 film is homogeneous and consists of a hexagonally ordered bowl-like structure, whose surface is uniformly decorated with crystalline Au NPs. The B-Au/WO3 sensing film shows a sensitivity of 96.0, a response time of 9.0 s and a recovery time of 16.0 s for 1 ppm NO2 at a low operating temperature of 150 degrees C. This significantly exceeds performances of bare WO3 counterpart. Also, the B-Au/WO3 sensor demonstrates obviously enhanced sensing responses over operating temperature ranges of 75-225 degrees C and perfect selectivity to NO2 gas. We proposed a combined sensing mechanism, the surface Au NPs dominated chemical sensitization and interbedded Au NP-induced electronic sensitization, to explain the perfect sensing performances in sensitivity, response, and selectivity. The template-mediated approach focuses on precise single-layer control and facilitates direct integration of the sensing film onto the required sensor substrate. The addressed on-chip fabrication strategy along with Au NPs decoration technique might provide promising applications in construction of advanced chemiresistive gas sensors, photocatalysts and electrochromic smart windows.
KeywordWO3 porous film Au NPs decoration On-chip fabrication NO2 detection Gas sensing
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams
DOI10.1016/j.snb.2018.10.065
WOS KeywordLOW OPERATING TEMPERATURE ; CORE-SHELL NANOPARTICLES ; METAL-OXIDES ; TUNGSTEN TRIOXIDE ; SENSORS ; FACILE ; NANOSTRUCTURES ; NANOCOMPOSITE ; MICROSPHERES ; CONDUCTANCE
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFA0207101] ; Natural Science Foundation of China[51771182] ; Natural Science Foundation of China[51531006] ; Natural Science Foundation of China[11574313] ; CAS/SAF International Partner-ship Program for Creative Research Teams
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams
WOS Research AreaChemistry ; Electrochemistry ; Instruments & Instrumentation
WOS SubjectChemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation
WOS IDWOS:000450302300025
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/34480
Collection中科院固体物理研究所
Corresponding AuthorZhang, Hongwen; Cai, Weiping
Affiliation1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Anhui Key Lab Nanomat & Nanotechnol, Hefei 230031, Anhui, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Hongwen,Wang, Yingying,Zhu, Xiaoguang,et al. Bilayer Au nanoparticle-decorated WO3 porous thin films: On-chip fabrication and enhanced NO2 gas sensing performances with high selectivity[J]. SENSORS AND ACTUATORS B-CHEMICAL,2019,280:192-200.
APA Zhang, Hongwen,Wang, Yingying,Zhu, Xiaoguang,Li, Yue,&Cai, Weiping.(2019).Bilayer Au nanoparticle-decorated WO3 porous thin films: On-chip fabrication and enhanced NO2 gas sensing performances with high selectivity.SENSORS AND ACTUATORS B-CHEMICAL,280,192-200.
MLA Zhang, Hongwen,et al."Bilayer Au nanoparticle-decorated WO3 porous thin films: On-chip fabrication and enhanced NO2 gas sensing performances with high selectivity".SENSORS AND ACTUATORS B-CHEMICAL 280(2019):192-200.
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