A Manganese Porphyrin Intercalated Lanthanum Niobic Acid Nanocomposite Utilized for Electrocatalytic Oxidation of Nitrite

作者：Zhang Xiaobo^*; Xu Jiasheng; Wang Mingyan; Siqin Gaowa; Xu Ruibo; Ma Juanjuan; Liu Lin; Zhang Dongen; Tong Zhiwei

来源：ECS Electrochemistry Letters, 2014, 3(8): H17-H19.

DOI：10.1149/2.0041408eel

Guest-guest exchange method is utilized to prepare a novel water-soluble metalloporphyrin manganese(III) meso-tetrakis(N-methylpyridinium-4-yl) porphyrin ((MnTMPyP)-T-III) intercalated layered lanthanum niobate KLaNb2O7. By the characterization of XRD, (MnTMPyP)-T-III cation is hypothesized to form an inclined monolayer between LaNb2O7- nanosheets. The as-prepared nanocomposite (MnTMPyP)-T-III-LaNb2O7 has good electrocatalytic activities toward oxidation of nitrite. A linear range of 2 x 10(-5) similar to 2.14 x 10(-2) mol L-1 with a detection limit of 1.3 x 10(-5) mol L-1 is concluded by detection of amperometric response of the (MnTMPyP)-T-III-LaNb2O7 modified electrode in nitrite solution, the mechanism of the nanocomposite toward electrocatalytic oxidation of nitrite is proposed.

• 出版日期2014
• 单位淮海工学院