Molecular fluorinated cobalt phthalocyanine immobilized on ordered mesoporous carbon as an electrochemical sensing platform for sensitive detection of hydrogen peroxide and hydrazine in alkaline medium.

Yuan, Baiqing; Sun, Peng; Fernandez, Carlos; Wang, Hemin; Guan, Peiyu; Xu, Hui; Niu, Yuzhong

Abstract

Non-precious molecular cobalt phthalocyanine (CoPc) complexes have been considered to be promising electrocatalysts due to diversity of substituents and carbon supporting matrixes. Here, we report a highly dispersed fluorinated CoPc (CoPcF16) molecule electrocatalyst immobilized in ordered mesoporous carbon CMK-3 (CMK-3-CoPcF16) via π-π interaction. The molecular electrocatalyst is characterized by X-ray photoelectron spectroscopy, Raman spectrum, electronic paramagnetic resonance, scanning electron microscopy, transmission electron microscopy and electrochemical impedance spectroscopy. The combination of fluorine substituents and high loading capability of CMK-3 increase the solubility of CoPc, suppress aggregation, and thereby enhance the electrocatalytic performance. As a result, the CMK-3-CoPcF16 modified electrode shows high electrocatalytic activity towards the oxidation of hydrogen peroxide and hydrazine. CMK-3-CoPcF16 hybrid is successfully presented as an electrochemical sensing platform for sensitive detection of H2O2 and hydrazine with a detection limit of 0.03 and 0.2 µM, respectively.

Citation

YUAN, B., SUN, P., FERNANDEZ, C., WANG, H., GUAN, P., XU, H. and NIU, Y. 2022. Molecular fluorinated cobalt phthalocyanine immobilized on ordered mesoporous carbon as an electrochemical sensing platform for sensitive detection of hydrogen peroxide and hydrazine in alkaline medium. Journal of electroanalytical chemistry [online], 906, article 116019. Available from: https://doi.org/10.1016/j.jelechem.2022.116019

• Journal Article Type: Article
• Acceptance Date: Jan 4, 2022
• Online Publication Date: Jan 7, 2022
• Publication Date: Feb 1, 2022
• Deposit Date: Jan 20, 2022
• Publicly Available Date: Jan 8, 2023
• Journal: Journal of electroanalytical chemistry
• Print ISSN: 1572-6657
• Electronic ISSN: 1873-2569
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 906
• Article Number: 116019
• DOI: https://doi.org/10.1016/j.jelechem.2022.116019
• Keywords: Fluorinated cobalt phthalocyanine; Ordered mesoporous carbon; Hydrogen peroxide (H2O2); Hydrazine; Electrochemical sensors
• Public URL: https://rgu-repository.worktribe.com/output/1569470
• Additional Information: The accompanying file contains supplementary material of 2 Tables and 18 Figures and can be found at pages 43-54.