Bilayer Au nanoparticle-decorated WO3 porous thin films: On-chip fabrication and enhanced NO2 gas sensing performances with high selectivity

doi:10.1016/j.snb.2018.10.065

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院固体物理研究所

	Bilayer Au nanoparticle-decorated WO3 porous thin films: On-chip fabrication and enhanced NO2 gas sensing performances with high selectivity
	Zhang, Hongwen 1; Wang, Yingying 1; Zhu, Xiaoguang 1; Li, Yue 1; Cai, Weiping 1,2
刊名	SENSORS AND ACTUATORS B-CHEMICAL
	2019-02-01
卷号	280 页码:192-200
关键词	WO3 porous film Au NPs decoration On-chip fabrication NO2 detection Gas sensing
ISSN号	0925-4005
DOI	10.1016/j.snb.2018.10.065
通讯作者	Zhang, Hongwen(hwzhang@issp.ac.cn) ; Cai, Weiping(wpcai@issp.ac.cn)
英文摘要	We 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.
资助项目	National 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
WOS关键词	LOW OPERATING TEMPERATURE ; CORE-SHELL NANOPARTICLES ; METAL-OXIDES ; TUNGSTEN TRIOXIDE ; SENSORS ; FACILE ; NANOSTRUCTURES ; NANOCOMPOSITE ; MICROSPHERES ; CONDUCTANCE
WOS研究方向	Chemistry ; Electrochemistry ; Instruments & Instrumentation
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000450302300025
资助机构	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 ; 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 ; 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 ; 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 ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation 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 ; 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 ; 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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 ; 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 ; 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 ; 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 ; 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 ; 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 ; 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 ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation 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 ; 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 ; 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 ; 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 ; 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Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation 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 ; 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 ; CAS/SAF International Partner-ship Program for Creative Research Teams ; CAS/SAF International Partner-ship Program for Creative Research Teams ; 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内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/34479]
专题	合肥物质科学研究院_中科院固体物理研究所
通讯作者	Zhang, Hongwen; Cai, Weiping
作者单位	1.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
推荐引用方式 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.