Nitrogen-doped 3D hierarchical ordered mesoporous carbon supported palladium electrocatalyst for the simultaneous detection of ascorbic acid, dopamine, and glucose

• Published in: Ionics Vol. 25; no. 12; pp. 6061 - 6070
• Main Authors: Brouzgou, Angeliki, Gorbova, Elena, Wang, Yi, Jing, Shengyu, Seretis, Antonios, Liang, Zhenxing, Tsiakaras, Panagiotis
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.12.2019; Springer Nature B.V
• Subjects: Ascorbic acid; Carbon; Chemistry; Chemistry and Materials Science; Condensed Matter Physics; Dopamine; Electrochemistry; Energy Storage; Glucose; Nitrogen; Optical and Electronic Materials; Original Paper; Palladium; Renewable and Green Energy; Vitamin C; Glucose electrooxidation, ascorbic acid electrooxidation; Dopamine electrooxidation; 3D hierarchical ordered mesoporous carbon
• ISSN: 0947-7047; 1862-0760
• DOI: 10.1007/s11581-019-03116-z

In the present work, nitrogen-doped three-dimensional (3D) hierarchical ordered mesoporous carbon supported palladium (Pd 20 wt%/N-3D) electrocatalyst was successfully synthesized with the nanocasting method. The as-prepared material was physicochemically and electrochemically characterized. It is found that the as-prepared electrocatalyst exhibits a hierarchically porous structure with interconnected walls, which permits the exposure of more active sites to the respective reactant. Due to its special structure, the electrocatalyst (i) is highly poison-tolerant to the intermediates of glucose electrooxidation reaction, (ii) presents high activity for ascorbic acid electrooxidation, and (iii) exhibits a moderate activity to dopamine electrooxidation reaction. The as-prepared electrocatalyst displayed a relatively good stability behavior. Its sensitivity range is reported to be 0.990 μA μM −1  cm −2 , 0.38 μA μM −1  cm −2 , and 0.09 μA μM −1  cm −2 for ascorbic acid, dopamine, and glucose, respectively.