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MOF-derived hierarchical hollow ZnO nanocages with enhanced low-concentration VOCs gas-sensing performance
Li, Wenhui1,2; Wu, Xiaofeng1; Han, Ning1; Chen, Jiayuan1,2; Qian, Xihui1,2; Deng, Yuzhou1,2; Tang, Wenxiang1,3; Chen, Yunfa1
2016-03-31
Source PublicationSENSORS AND ACTUATORS B-CHEMICAL
ISSN0925-4005
Volume225Issue:MARPages:158-166
AbstractThe design and synthesis of nanostructured ZnO with high chemical sensing properties, especially towards ppb or sub-ppm level VOC gases is still highly desired and challengeable. Herein, the hierarchical hollow ZnO nanocages were synthesized by a facile strategy through the simple and direct pyrolysis of Zn-based metal-organic framework. The as-synthesized hollow ZnO products present the typical hierarchical structures with hollow interiors enveloped by interpenetrated ZnO nanoparticles as porous shell, providing structurally combined meso-/macro-porous channels for facilitating the diffusion and surface reaction of gas molecules. The gas-sensing experiments demonstrate that, in contrast with singular ZnO nanoparticles, the ZnO nanocages show significantly enhanced chemical sensing sensitivity and selectivity towards low-concentration volatile organic compounds, typically, acetone and benzene. Furthermore, the ZnO hollow nanocages perform sub-ppm level sensitivity with 2.3 ppm(-1) towards 0.1 ppm benzene, and ppb level sensitivity with 15.3 ppm(-1) towards 50 ppb acetone, respectively. The enhanced sensing performance of the MOF-derived ZnO nanocages is ascribed to the unique hierarchical structure with high specific surface area and abundant exposed active sites with surface-adsorbed oxygen. (C) 2015 Elsevier B.V. All rights reserved.
KeywordMof-derived Zno Nanocages Hierarchical Hollow Structure Ppb Or Sub-ppm Level Vocs Gas Sensors
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.snb.2015.11.034
Indexed BySCI
Language英语
WOS KeywordMETAL-ORGANIC-FRAMEWORK ; TEMPLATED SYNTHESIS ; FACILE SYNTHESIS ; CARBON-DIOXIDE ; PROPERTY ; NANOPARTICLES ; MICROSPHERES ; SENSORS ; SPHERES ; ETHANOL
WOS Research AreaChemistry ; Electrochemistry ; Instruments & Instrumentation
WOS SubjectChemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation
Funding OrganizationNational Natural Science Foundation of China(51272253) ; 863 Hi-tech Research and Development Program of China(2013AA031801) ; Science and Technology of Chinese Academy of Sciences(XDB05050000)
WOS IDWOS:000366759500020
Citation statistics
Cited Times:60[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/20195
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multi Phase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Connecticut, Inst Mat Sci, Storrs, CT 06269 USA
Recommended Citation
GB/T 7714
Li, Wenhui,Wu, Xiaofeng,Han, Ning,et al. MOF-derived hierarchical hollow ZnO nanocages with enhanced low-concentration VOCs gas-sensing performance[J]. SENSORS AND ACTUATORS B-CHEMICAL,2016,225(MAR):158-166.
APA Li, Wenhui.,Wu, Xiaofeng.,Han, Ning.,Chen, Jiayuan.,Qian, Xihui.,...&Chen, Yunfa.(2016).MOF-derived hierarchical hollow ZnO nanocages with enhanced low-concentration VOCs gas-sensing performance.SENSORS AND ACTUATORS B-CHEMICAL,225(MAR),158-166.
MLA Li, Wenhui,et al."MOF-derived hierarchical hollow ZnO nanocages with enhanced low-concentration VOCs gas-sensing performance".SENSORS AND ACTUATORS B-CHEMICAL 225.MAR(2016):158-166.
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