Application of a Nanostructured Composite Material Constructed by Self-Assembly of Titanoniobate Nanosheets and Cobalt Porphyrin to Electrocatalytic Reduction of Oxygen

A novel layered nanocomposite was fabricated by the self-assembly of TiNbOs-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, th...

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Bibliographic Details
Published in:Chinese journal of chemistry 2016-10, Vol.34 (10), p.1021-1026
Main Authors: Li, Jinpeng, Zhang, Xiaobo, Pan, Binbin, Xu, Jiasheng, Liu, Lin, Ma, Juanjuan, Yang, Min, Zhang, Zhenye, Tong, Zhiwei
Format: Article
Language:English
Subjects:
Composite materials
exfoliation
layered material
metalloporphyrin
Oxygen
oxygen reduction
self-assembly
Zeta电位
应用
氧还原
电催化还原
纳米复合材料
自组装
钛铌酸盐
钴卟啉
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Summary:A novel layered nanocomposite was fabricated by the self-assembly of TiNbOs-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 KTiNbO5 successfully. The electrochemical property of TiNbO5-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 H2O2 by a two-electron process.
ISSN:1001-604X
1614-7065
DOI:10.1002/cjoc.201600390