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MOF-derived hierarchical ZnO/ZnFe2O4 hollow cubes for enhanced acetone gas-sensing performance
Ma, Xiang1,2; Zhou, Xinyuan1,2; Gong, Yan1,2; Han, Ning1; Liu, Haidi1; Chen, Yunfa1
Source PublicationRSC ADVANCES

ZnO/ZnFe2O4 hollow cube composites with heterogeneous structure are synthesized by a facile strategy through simple and direct pyrolysis of FeIII-modified Zn-based metal-organic frameworks. The assynthesized ZnO/ZnFe2O4 hollow cubes have well-defined cube morphology with an similar to 2 mu m and multiple porous shell constructed from interpenetrated ZnO and ZnFe2O4 heterogeneous nanoparticles, providing structurally combined mesoporous channels for facilitating the diffusion and surface reaction of gas molecules. In addition, a comparative sensing performance investigation between ZnO/ZnFe2O4 hollow cubes and singular ZnO demonstrates that, in contrast with ZnO, the ZnO/ZnFe2O4 hollow cubes show significantly enhanced chemical sensing sensitivity towards low-concentration acetone. Furthermore, the ZnO/ZnFe2O4 hollow cubes exhibit good reproducibility and selectivity towards gaseous acetone. The enhanced sensing performance of the MOF-derived ZnO/ZnFe2O4 hollow cubes is ascribed to the unique hierarchical structure with high specific surface area, abundant exposed active sites with surface-adsorbed oxygen species and heterojunctions formed at the interfaces between ZnO and ZnFe2O4.

WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS KeywordMetal-organic Frameworks ; Lithium-ion Battery ; Oxygen Reduction Reaction ; Sensor Performance ; Room-temperature ; Facile Synthesis ; Shell ; Fabrication ; Design ; Oxidation
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding OrganizationStrategic Project of Science and Technology of Chinese Academy of Science(XDB05050400) ; National Science and Technology(2014BAC21B00)
WOS IDWOS:000405485700039
Citation statistics
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Ma, Xiang,Zhou, Xinyuan,Gong, Yan,et al. MOF-derived hierarchical ZnO/ZnFe2O4 hollow cubes for enhanced acetone gas-sensing performance[J]. RSC ADVANCES,2017,7(55):34609-34617.
APA Ma, Xiang,Zhou, Xinyuan,Gong, Yan,Han, Ning,Liu, Haidi,&Chen, Yunfa.(2017).MOF-derived hierarchical ZnO/ZnFe2O4 hollow cubes for enhanced acetone gas-sensing performance.RSC ADVANCES,7(55),34609-34617.
MLA Ma, Xiang,et al."MOF-derived hierarchical ZnO/ZnFe2O4 hollow cubes for enhanced acetone gas-sensing performance".RSC ADVANCES 7.55(2017):34609-34617.
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