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Boosting Electrical Response toward Trace Volatile Organic Compounds Molecules via Pulsed Temperature Modulation of Pt Anchored WO3 Chemiresistor

文献类型：期刊论文

作者Dai, Tiantian9,10; Yan, Zhi6,7,8; Li, Meng9,10; Han, Yulei5,7,8; Deng, Zanhong4,9,10; Wang, Shimao4,9,10; Wang, Ruyang3; Xu, Xiaohong6; Shi, Lei7,8; Tong, Wei2
刊名SMALL METHODS
出版日期2022-08-26
ISSN号2366-9608
关键词asymmetric oxygen vacancy defects inward gas diffusion oxide chemiresistors pulsed temperature modulation trace VOCs detection
DOI10.1002/smtd.202200728
通讯作者Qiao, Zhenhua(qiao@ustc.edu.cn) ; Li, Liang(lli@suda.edu.cn) ; Meng, Gang(menggangg@aiofm.ac.cn)
英文摘要Insufficient limit of detection (LoD) toward volatile organic compounds (VOCs) hinders the promising applications of metal oxide chemiresistors in emerging air quality monitoring and/or breath analysis. There is an inherent limitation of widely adopted strategies of creating sensitive chemiresistors then operating at the optimized temperature via a continuous heating (CH) mode. Herein, a strategy combining Pt single atoms anchoring (chemical sensitization) with pulsed temperature modulation (PTM, physical sensitization) is proposed. Apart from generating abundant surface asymmetric oxygen vacancy (Pt-V-o-W) active sites at pulsed high temperature (HT) stage, inward diffusion of trace target VOCs across the sensing layer at pulsed low temperature stage (driven by PTM induced concentration gradient), can greatly enhance the charge interaction probability between the generated surface active species and the surrounding VOCs, and thus offers a novel avenue on addressing the bottleneck issue of low LoD by PTM. Triggered by HT of 300 degrees C, the responses of Pt anchored WO3 chemiresistor to 1 ppm trimethylamine (TMA) and xylene can be drastically boosted from 1.9 (CH) to 6541.5 (PTM) and 1.5 (CH) to 1001.1 (PTM), respectively. And ultra-low theoretic LoD of 0.78 ppt (TMA) and 0.18 ppt (xylene) are successfully achieved, respectively.
WOS关键词AEROSOL-ASSISTED CVD ; GAS ; SENSOR
资助项目National Natural Science Foundation of China[11674324] ; National Natural Science Foundation of China[52025028] ; National Natural Science Foundation of China[62075223] ; CAS Pioneer Hundred Talents Program from Chinese Academy of Sciences ; CAS-NSTDA Joint Research Projects[GJHZ202101] ; Key Lab of Photovoltaic and Energy Conservation Materials[PECL2021QN001]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science
语种英语
出版者WILEY-V C H VERLAG GMBH
WOS记录号WOS:000846456500001
资助机构National Natural Science Foundation of China ; CAS Pioneer Hundred Talents Program from Chinese Academy of Sciences ; CAS-NSTDA Joint Research Projects ; Key Lab of Photovoltaic and Energy Conservation Materials
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/131894]  
专题中国科学院合肥物质科学研究院
通讯作者Qiao, Zhenhua; Li, Liang; Meng, Gang
作者单位1.Soochow Univ, Ctr Energy Convers Mat & Phys CECMP, Sch Phys Sci & Technol, Jiangsu Key Lab Thin Films, Suzhou 215006, Peoples R China
2.Chinese Acad Sci, High Magnet Field Lab, Anhui Prov Key Lab Condensed Matter Phys Extreme, Hefei 230031, Peoples R China
3.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Anhui, Peoples R China
4.Adv Laser Technol Lab Anhui Prov, Hefei 230037, Peoples R China
5.Fuzhou Univ, Dept Phys, Fuzhou 350108, Fujian, Peoples R China
6.Shanxi Normal Univ, Sch Chem & Mat Sci, Linfen 041004, Peoples R China
7.Univ Sci & Technol China, Dept Phys, Hefei 230026, Anhui, Peoples R China
8.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, CAS Key Lab Strongly Coupled Quantum Matter Phys, Hefei 230026, Anhui, Peoples R China
9.Chinese Acad Sci, Hefei Inst Phys Sci, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China
10.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Anhui Prov Key Lab Photon Devices & Mat, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Dai, Tiantian,Yan, Zhi,Li, Meng,et al. Boosting Electrical Response toward Trace Volatile Organic Compounds Molecules via Pulsed Temperature Modulation of Pt Anchored WO3 Chemiresistor[J]. SMALL METHODS,2022.
APA Dai, Tiantian.,Yan, Zhi.,Li, Meng.,Han, Yulei.,Deng, Zanhong.,...&Meng, Gang.(2022).Boosting Electrical Response toward Trace Volatile Organic Compounds Molecules via Pulsed Temperature Modulation of Pt Anchored WO3 Chemiresistor.SMALL METHODS.
MLA Dai, Tiantian,et al."Boosting Electrical Response toward Trace Volatile Organic Compounds Molecules via Pulsed Temperature Modulation of Pt Anchored WO3 Chemiresistor".SMALL METHODS (2022).

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来源：合肥物质科学研究院

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