CAS OpenIR  > 多相复杂系统国家重点实验室
Effective Ti Doping of delta-MnO2 via Anion Route for Highly Active Catalytic Combustion of Benzene
Li, Dongyan1,2; Li, Wenhui1,2,3; Deng, Yuzhou1,2,3; Wu, Xiaofeng1,2; Han, Ning1,2; Chen, Yunfa1,2
AbstractDue to its unique layered structure compared with those tunnel structures of alpha-, beta-, and gamma-MnO2, delta-phase MnO2 is widely investigated as pollutant degradation catalysts, supercapacitor cathodes, and so forth. However, it is still challenging to effectively dope the delta-MnO2 to improve its performance although doping of other structures has been widely reported. In this study, a facile anion route is used to dope Ti in hydrothermal process for preparation of highly active hierarchical delta-MnO2 catalyst. The Ti doping process is performed successfully at a growth temperature of 140 degrees C, considering keeping the active delta-phase and producing the active lattice oxygen, which is identified by X-ray diffraction patterns (XRD), X-ray photoelectron spectra (XPS), and Raman spectra. On the other hand, low temperature (<120 degrees C) induces low doping concentration (<0.5 atom %) and high temperature (>160 degrees C) changes the delta-phase to alpha-phase. The doping process is proposed to be the incorporation of the hydrolyzed [Ti(OH)(6)](2-) into the [MnO6] sheets with similar octahedral structure. The Ti-doped delta-MnO2 has the highest catalytic oxidation property over benzene, which can be attributed to both the active oxygen induced by Ti doping, and the abundant pore structures, such as the interlayer spaces (similar to 0.7 nm), mesopores (e.g., 4-5 nm and 8-9 nm), and macropores between the nanoflake assembles facilitating the gases diffusion and reactions. All these results hold the promise for the effective anion doping route for delta-MnO2 applied in high efficiency and low cost degradation of volatile organic compound contamination in air as well as in other catalytic applications.
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Indexed BySCI
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
Funding OrganizationNational High Technology Research and Development Program 863 of China(2012AA062702) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB0505000) ; State Key Laboratory of Multiphase Complex Systems(MPCS-2015-A-04)
WOS IDWOS:000376417500020
Citation statistics
Cited Times:41[WOS]   [WOS Record]     [Related Records in WOS]
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.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Peoples R China
3.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Li, Dongyan,Li, Wenhui,Deng, Yuzhou,et al. Effective Ti Doping of delta-MnO2 via Anion Route for Highly Active Catalytic Combustion of Benzene[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2016,120(19):10275-10282.
APA Li, Dongyan,Li, Wenhui,Deng, Yuzhou,Wu, Xiaofeng,Han, Ning,&Chen, Yunfa.(2016).Effective Ti Doping of delta-MnO2 via Anion Route for Highly Active Catalytic Combustion of Benzene.JOURNAL OF PHYSICAL CHEMISTRY C,120(19),10275-10282.
MLA Li, Dongyan,et al."Effective Ti Doping of delta-MnO2 via Anion Route for Highly Active Catalytic Combustion of Benzene".JOURNAL OF PHYSICAL CHEMISTRY C 120.19(2016):10275-10282.
Files in This Item:
File Name/Size DocType Version Access License
Effective Ti Doping (7194KB)期刊论文出版稿限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li, Dongyan]'s Articles
[Li, Wenhui]'s Articles
[Deng, Yuzhou]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li, Dongyan]'s Articles
[Li, Wenhui]'s Articles
[Deng, Yuzhou]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li, Dongyan]'s Articles
[Li, Wenhui]'s Articles
[Deng, Yuzhou]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.