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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
2016-05-19
发表期刊JOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
卷号120期号:19页码:10275-10282
摘要Due 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.
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1021/acs.jpcc.6b00931
收录类别SCI
语种英语
关键词[WOS]MANGANESE OXIDE ; HYDROTHERMAL SYNTHESIS ; AIR BATTERIES ; THIN-FILM ; MNO2 ; PERFORMANCE ; SUPERCAPACITORS ; OXIDATION ; CHEMISTRY ; NANOSTRUCTURES
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
项目资助者National 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记录号WOS:000376417500020
引用统计
被引频次:16[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21090
专题多相复杂系统国家重点实验室
作者单位1.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
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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.
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