Well-Tuned Surface Oxygen Chemistry of Cation Off-Stoichiometric Spinel Oxides for Highly Selective and Sensitive Formaldehyde Detection
文献类型：期刊论文
| 作者 | Sun, Lei3; Chen, Hui1,2; Li, Guo-Dong2; Zou, Xiaoxin2 |
| 刊名 | CHEMISTRY OF MATERIALS
 |
| 出版日期 | 2018-03-27 |
| 卷号 | 30期号:6页码:2018-2027 |
| ISSN号 | 0897-4756 |
| DOI | 10.1021/acs.chemmater.7b05251 |
| 文献子类 | Article |
| 英文摘要 | Surface oxygen chemistry of semiconductor metal oxides is the basis for the sensing reaction between the preadsorbed surface oxygen and the target gases or organic vapors that are to be detected, and thus fundamentally determines their sensing performances. Herein, we, for the first time, identify a novel semiconductor spinel oxide, CdGa2O4, that has suitable surface oxygen chemistry and exhibits excellent selectivity and response toward formaldehyde. Moreover, we find that a cation off-stoichiometric CdGa2O4 spinel oxide decorated with a small amount of CdO nanocrystals can further improve the formaldehyde response, without losing the selectivity. This is based on the advantages of an increased amount of adsorbed oxygen in the Ga-rich environment, as well as heterojunctions between CdO nanoparticles and Ga-rich spinel oxide. Sensing performance (e.g., selectivity and response) of the material is much better than that of most reported nanostructured metal oxides used for formaldehyde detection. Our findings propose a general approach for achieving highly selective and sensitive detection of target gases by optimizing the surface oxygen property of semiconductor oxides. |
| WOS关键词 | GAS-SENSING PROPERTIES ; ROOM-TEMPERATURE ; HOLLOW MICROSPHERES ; NANOWIRE ARRAY ; SENSORS ; ZNO ; NANOPARTICLES ; XYLENE ; STATE ; SEMICONDUCTORS |
| WOS研究方向 | Chemistry ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000428712200024 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/169122]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Zou, Xiaoxin |
| 作者单位 | 1.Jilin Univ, Coll Mat Sci & Engn, Changchun 130022, Jilin, Peoples R China 2.Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Jilin, Peoples R China 3.Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Lei,Chen, Hui,Li, Guo-Dong,et al. Well-Tuned Surface Oxygen Chemistry of Cation Off-Stoichiometric Spinel Oxides for Highly Selective and Sensitive Formaldehyde Detection[J]. CHEMISTRY OF MATERIALS,2018,30(6):2018-2027. |
| APA | Sun, Lei,Chen, Hui,Li, Guo-Dong,&Zou, Xiaoxin.(2018).Well-Tuned Surface Oxygen Chemistry of Cation Off-Stoichiometric Spinel Oxides for Highly Selective and Sensitive Formaldehyde Detection.CHEMISTRY OF MATERIALS,30(6),2018-2027. |
| MLA | Sun, Lei,et al."Well-Tuned Surface Oxygen Chemistry of Cation Off-Stoichiometric Spinel Oxides for Highly Selective and Sensitive Formaldehyde Detection".CHEMISTRY OF MATERIALS 30.6(2018):2018-2027. |
入库方式： OAI收割
来源：大连化学物理研究所
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