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首页> 外文期刊>Journal of solid state electrochemistry >Electrochemical investigation of a novel metalloporphyrin intercalated layered niobate modified electrode and its electrocatalysis on ascorbic acid
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Electrochemical investigation of a novel metalloporphyrin intercalated layered niobate modified electrode and its electrocatalysis on ascorbic acid

机译：新型金属卟啉插入层状铌酸盐修饰电极的电化学研究及其对抗坏血酸的电催化作用

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摘要

Cationic iron (III) tetrakis-5, 10, 15, 20-(N-methyl-4-pyridyl) porphyrin (Fe~(III)TMPyP) was intercalated into layered semiconductor KNb_3O_8 by ion-exchange method. The target product was characterized by XRD, Fourier transform infrared, UV-vis, and TGA. Fe~(III)TMPyP forms an inclined monolayer between Nb_3O_8~- nanosheets and endues the nanocomposite with excellent electrochemical catalytic activities. The target nanocomposite modified glass carbon electrode shows good electrocatalytic activities for the oxidation of ascorbic acid (AA); the catalytic mechanism was proposed. Differential pulse voltammetric technique was used for detection of AA in neutral aqueous solution; a detection limit of 4.2×10~(-5) Mwas obtained, and themodified electrode showed good reproducibility in electrochemical detection.
机译：通过离子交换法将阳离子铁（III）四，5、10、15、20-（N-甲基-4-吡啶基）卟啉（Fe〜（III）TMPyP）嵌入层状半导体KNb_3O_8中。通过XRD，傅立叶变换红外，紫外可见和TGA对目标产物进行表征。 Fe〜（III）TMPyP在Nb_3O_8〜-纳米片之间形成倾斜的单层，并赋予纳米复合材料优异的电化学催化活性。目标纳米复合改性玻璃碳电极对抗坏血酸（AA）的氧化显示出良好的电催化活性。提出了催化机理。用差分脉冲伏安法检测中性水溶液中的氨基酸。获得的检测限为4.2×10〜（-5）M，修饰电极在电化学检测中具有良好的重现性。

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