CAS OpenIR
Synthesis of Pd-loaded mesoporous SnO2 hollow spheres for highly sensitive and stable methane gas sensors
Yang, Liping1; Wang, Zhou1; Zhou, Xinyuan1,2; Wu, Xiaofeng1; Han, Ning1,3; Chen, Yunfa1,3
2018
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume8Issue:43Pages:24268-24275
AbstractHigh performance methane gas sensors have become more and more essential in different fields such as coal mining, kitchens and industrial production, which necessitates the design and synthesis of highly sensitive materials. Herein, mesoporous SnO2 hollow spheres with high surface area (>90 m(2) g(-1)) are prepared by a progressive inward crystallization routine, showing a high response of 1.31 to 250 ppm CH4 at a working temperature of 400 degrees C. Furthermore, loading noble metal Pd onto the surface of SnO2 hollow spheres by an adsorption-calcination process improves the response to 4.88 (250 ppm CH4) at the optimal dosage of 1 wt% Pd. Meanwhile, the working temperature decreases to 300 degrees C, showing the prominent spillover effect of catalytic Pd and PdO-SnO2 heterostructure sensitization as evidenced by the binding energy shift in the X-ray photoelectron spectroscopy (XPS) analysis. The response/recovery time is as short as 3/7 s and the sensitivity is stable for a test period as long as 15 weeks. All these performances show the promise of the highly porous Pd-loaded SnO2 hollow spheres for high performance methane sensors.
DOI10.1039/c8ra03242d
Language英语
WOS KeywordENHANCED SENSING PERFORMANCE ; SELECTIVE DETECTION ; HETEROGENEOUS SENSITIZATION ; CRYSTALLINE FRAMEWORK ; OXIDE SEMICONDUCTORS ; TUNGSTEN-OXIDES ; GRAPHENE OXIDE ; MICROSPHERES ; CO ; NANOCOMPOSITE
Funding ProjectNational Key R&D Program of China[2016YFC0207100] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB05050400] ; National Natural Science Foundation of China[51672273] ; Guangdong Innovative and Entepreneurial Research Team Program[2014ZT05C146]
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding OrganizationNational Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Guangdong Innovative and Entepreneurial Research Team Program
WOS IDWOS:000440243600021
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/25458
Collection中国科学院过程工程研究所
Corresponding AuthorHan, Ning; Chen, Yunfa
Affiliation1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, North Second St 1, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Jimei Ave 1799, Xiamen 361021, Peoples R China
Recommended Citation
GB/T 7714
Yang, Liping,Wang, Zhou,Zhou, Xinyuan,et al. Synthesis of Pd-loaded mesoporous SnO2 hollow spheres for highly sensitive and stable methane gas sensors[J]. RSC ADVANCES,2018,8(43):24268-24275.
APA Yang, Liping,Wang, Zhou,Zhou, Xinyuan,Wu, Xiaofeng,Han, Ning,&Chen, Yunfa.(2018).Synthesis of Pd-loaded mesoporous SnO2 hollow spheres for highly sensitive and stable methane gas sensors.RSC ADVANCES,8(43),24268-24275.
MLA Yang, Liping,et al."Synthesis of Pd-loaded mesoporous SnO2 hollow spheres for highly sensitive and stable methane gas sensors".RSC ADVANCES 8.43(2018):24268-24275.
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