Enhanced gas-sensing performance of metal@ZnO core-shell nanoparticles towards ppb-ppm level benzene: the role of metal-ZnO hetero-interfaces
文献类型:期刊论文
作者 | Gong, Yan1,2; Wu, Xiaofeng1; Chen, Jiayuan1,2; Li, Wenhui1,2; Han, Ning1; Zhang, Donghai1; Chen, Yunfa1 |
刊名 | NEW JOURNAL OF CHEMISTRY |
出版日期 | 2019-02-07 |
卷号 | 43期号:5页码:2220-2230 |
ISSN号 | 1144-0546 |
DOI | 10.1039/c8nj04621b |
英文摘要 | Core-shell metal@ZnO nanoparticles including Au@ZnO, Pd@ZnO and Pt@ZnO were synthesized and utilized for sensing low-concentration benzene. Various techniques were used to characterize the compositional properties of the typical core@shell structure and analyze the relation between the sensing properties and the metal-ZnO hetero-interfaces. When applied as gas-sensing materials, all three core-shell metal@ZnO nanoparticles showed better sensing performance than pure ZnO nanoparticles towards low concentration benzene. In particular, the gas-sensing response of the Pt@ZnO core-shell nanoparticles was 7 times higher than that of pure ZnO towards 0.1 ppm benzene and 63 times higher towards 5 ppm benzene, which was more sensitive than most gas-sensing materials in previous literature. Furthermore, the Pt@ZnO core-shell nanoparticles presented an ultra-low detection limit of no less than 10 ppb, which was lower than those of most gas-sensing materials in previous literature. Besides, the Pt@ZnO core-shell nanoparticles showed high selectivity and long-term response stability with a response value of 2.7 +/- 1.6% towards 1 ppm benzene after operating for a month. The enhanced gas-sensing performances of the metal@ZnO core-shell nanoparticles are well correlated to the work function differences between the contacted metal and ZnO within the metal-ZnO hetero-interfaces, which produce high Schottky energy barriers and modulate the electron transfer. |
WOS关键词 | ORGANIC-COMPOUNDS VOCS ; AU NANOPARTICLES ; HIERARCHICAL STRUCTURES ; OXIDE NANOSTRUCTURES ; SENSORS ; NANOSPHERES ; MORPHOLOGY ; IN2O3 ; SIZE ; NANOCRYSTALS |
资助项目 | National Natural Science Foundation of China[51672273] ; National Natural Science Foundation of China[51272253] ; Strategic Project of Science and Technology of Chinese Academy of Sciences[XDB05050000] |
WOS研究方向 | Chemistry |
语种 | 英语 |
出版者 | ROYAL SOC CHEMISTRY |
WOS记录号 | WOS:000459581000018 |
资助机构 | National Natural Science Foundation of China ; Strategic Project of Science and Technology of Chinese Academy of Sciences |
源URL | [http://ir.ipe.ac.cn/handle/122111/27981] |
专题 | 中国科学院过程工程研究所 |
通讯作者 | Wu, Xiaofeng; Chen, Yunfa |
作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Gong, Yan,Wu, Xiaofeng,Chen, Jiayuan,et al. Enhanced gas-sensing performance of metal@ZnO core-shell nanoparticles towards ppb-ppm level benzene: the role of metal-ZnO hetero-interfaces[J]. NEW JOURNAL OF CHEMISTRY,2019,43(5):2220-2230. |
APA | Gong, Yan.,Wu, Xiaofeng.,Chen, Jiayuan.,Li, Wenhui.,Han, Ning.,...&Chen, Yunfa.(2019).Enhanced gas-sensing performance of metal@ZnO core-shell nanoparticles towards ppb-ppm level benzene: the role of metal-ZnO hetero-interfaces.NEW JOURNAL OF CHEMISTRY,43(5),2220-2230. |
MLA | Gong, Yan,et al."Enhanced gas-sensing performance of metal@ZnO core-shell nanoparticles towards ppb-ppm level benzene: the role of metal-ZnO hetero-interfaces".NEW JOURNAL OF CHEMISTRY 43.5(2019):2220-2230. |
入库方式: OAI收割
来源:过程工程研究所
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