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

作者：Li, Jinpeng; Zhang, Xiaobo; Pan, Binbin; Xu, Jiasheng; Liu, Lin; Ma, Juanjuan; Yang, Min; Zhang, Zhenye; Tong, Zhiwei^*

来源：Chinese Journal of Chemistry, 2016, 34(10): 1021-1026.

DOI：10.1002/cjoc.201600390

• layered material
• metalloporphyrin
• exfoliation
• self-assembly
• oxygen reduction

A novel layered nanocomposite was fabricated by the self-assembly of TiNbO5-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.

• 出版日期2016-10
• 单位淮海工学院; 中国矿业大学（北京）; 兰州大学