Abstract
We studied the electrochemical reduction based on gold electrode of a diazonium salt prepared from ethylenediamine. This is the first time where the covalent functionalization on the gold electrode of an alkyldiazonium salt, 2-aminoethane-1-diazonium chloride, is demonstrated. This step requires the preparation beforehand by diazotization of one amine group from ethylenediamine. The resulting electrodeposited ethylamine film was confirmed by spectroscopic characterizations from gold surface modification monitored by electrochemical quartz crystal microbalance (EQCM) coupled to cyclic voltammetry (CV). The development of chemosensors based on such a covalent functionalization of a metal can reduce the chemical threats to human health along with drastically removing contaminants according to the green chemistry principles.
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Acknowledgements
The authors gratefully acknowledge Prof. Jean Pinson (University Paris Diderot, France) for scientific discussions and comments.
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All data generated or analysed during this study are included in this published article (“Materials and methods” section) and publicly available dataset.
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We gratefully acknowledge the Iraqi Ministry of Higher Education and the Scientific Research and Cultural Bureau /Embassy of the Republic of Iraq in Paris – France for financial support. This work was also supported by Campus France and the Region of Franche-Comté. We also thank the RENATECH network for SEM facilities.
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Ahmed Kandory, Anne-Marie Goncalves, Mathieu Frégnaux, Hélène Cattey: conceptualization, methodology, formal analysis, writing
Badr Alaoui-Sossé, Lotfi Aleya, Guillaume Herlem: writing, original draft, data curation
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Kandory, A., Goncalves, AM., Frégnaux, M. et al. Gold modification by reduction of a diazonium salt prepared from an aliphatic diamine: a new useful means to remove hazardous substances. Environ Sci Pollut Res 29, 1239–1245 (2022). https://doi.org/10.1007/s11356-021-15696-3
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DOI: https://doi.org/10.1007/s11356-021-15696-3