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Application of a Nanostructured Composite Material Constructed by Self‐Assembly of Titanoniobate Nanosheets and Cobalt Porphyrin to Electrocatalytic Reduction of Oxygen
Author(s) -
Li Jinpeng,
Zhang Xiaobo,
Pan Binbin,
Xu Jiasheng,
Liu Lin,
Ma Juanjuan,
Yang Min,
Zhang Zhenye,
Tong Zhiwei
Publication year - 2016
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201600390
Subject(s) - chemistry , cyclic voltammetry , nanocomposite , electrochemistry , cobalt , porphyrin , electrode , zeta potential , electrocatalyst , oxygen reduction , chemical engineering , oxygen , nanotechnology , inorganic chemistry , nanoparticle , organic chemistry , materials science , engineering
A novel layered nanocomposite was fabricated by the self‐assembly of TiNbO 5 ‐nanosheets and 5,10,15,20‐tetrakis( N ‐methylpyridinium‐4‐yl)porphyrinatocobalt(III) (CoTMPyP). The product was characterized by a variety of analytical techniques such as XRD, EDX, Zeta potential, AFM, UV‐vis, IR and SEM, the guest species were intercalated into the interlayer gallery of KTiNbO 5 successfully. The electrochemical property of TiNbO 5 ‐CoTMPyP as an electrode modifying material was examined by cyclic voltammetry test in PBS solution (pH=7), and the hybrid exhibited excellent electrocatalytical property towards oxygen reduction with the peak potential shifting from −0.703 V (bare GCE) to −0.278 V (modified electrode). The result also indicated that the oxygen molecule was reduced to H 2 O 2 by a two‐electron process.
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