Counterintuitive sensing mechanism of ZnO nanoparticle based gas sensors
文献类型：期刊论文
| 作者 | Han, Ning1,2; Wu, Xiaofeng1; Chai, Linyu1,2; Liu, Haidi1; Chen, Yunfa1
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| 刊名 | SENSORS AND ACTUATORS B-CHEMICAL
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| 出版日期 | 2010-09-21 |
| 卷号 | 150期号:1页码:230-238 |
| 关键词 | Zinc oxide Nonstoichiometry Spectroscopy Gas sensor Crystal defect |
| ISSN号 | 0925-4005 |
| 通讯作者 | Chen, YF |
| 英文摘要 | Zinc oxide nanoparticles are prepated by calcining zinc hydrocarbonate precursors at 300-700 degrees C (ZnO300-700). and corresponding gas sensing property are tested at 300 degrees C by using formaldehyde as the probe Although the nanoparticle sizes are found to gradually increase with calcination temperature, the sensor measurements reveal the size-independent behavior that ZnO500 and ZnO300 have the highest and lowest responses, respectively Spectroscopic characterization further reveals nonstoichiometric compositions of ZnO nanoparticles ZnO300 has the largest excess oxygen (oxygen interstitial, O(1)). whereas ZnO500 has the largest excess zinc (oxygen vacancy, V(o) and/or zinc interstitial, Zn(1)) Accordingly, a new sensing mechanism is proposed for ZnO nanoparticle sensois Excess zinc favors chemisorption of oxygen onto the nanoparticle surface, leading to reacting with mot e formaldehyde molecules to get a high signal On the contrary, excess oxygen inhibits free oxygen to be chemisorbed onto the nanoparticle surface, and thus decreases the gas response Finally, this new sensing mechanism is verified by testing gas response of ZnO500 nanoparticles annealed at different atmospheres (C) 2010 Elsevier B V All lights reserved |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation |
| 研究领域[WOS] | Chemistry ; Electrochemistry ; Instruments & Instrumentation |
| 关键词[WOS] | ZINC-OXIDE ; VAPOR-DEPOSITION ; THERMAL-ANALYSIS ; THIN-FILMS ; DOPED ZNO ; PHOTOLUMINESCENCE ; NANORODS ; DEFECTS ; PROPERTY ; METHANOL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000282726200033 |
| 公开日期 | 2013-11-13 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/5708]  |
| 专题 | 过程工程研究所_多相复杂系统国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Han, Ning,Wu, Xiaofeng,Chai, Linyu,et al. Counterintuitive sensing mechanism of ZnO nanoparticle based gas sensors[J]. SENSORS AND ACTUATORS B-CHEMICAL,2010,150(1):230-238. |
| APA | Han, Ning,Wu, Xiaofeng,Chai, Linyu,Liu, Haidi,&Chen, Yunfa.(2010).Counterintuitive sensing mechanism of ZnO nanoparticle based gas sensors.SENSORS AND ACTUATORS B-CHEMICAL,150(1),230-238. |
| MLA | Han, Ning,et al."Counterintuitive sensing mechanism of ZnO nanoparticle based gas sensors".SENSORS AND ACTUATORS B-CHEMICAL 150.1(2010):230-238. |
入库方式： OAI收割
来源：过程工程研究所
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