Electrocatalytic Oxidation of Nitrophenols via Ag Nanoparticles Supported on Citric-Acid-Modified Polyaniline
| dc.contributor.author | Khani, Milad | |
| dc.contributor.author | Sammynaiken, Ramaswami | |
| dc.contributor.author | Wilson, Lee | |
| dc.date.accessioned | 2023-07-12T04:55:18Z | |
| dc.date.available | 2023-07-12T04:55:18Z | |
| dc.date.issued | 2023 | |
| dc.description | © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). | en_US |
| dc.description.abstract | Citric-acid-modified polyaniline (P-CA) and P-CA modified with Ag nanoparticles (Ag@PCA) were prepared via an in situ reduction method. The physicochemical properties of P-CA and Ag@P-CA were compared to unmodified polyaniline (PANI) and PANI-modified Ag nanoparticles (Ag@PANI). Ag@P-CA had a lower content of aniline oligomers compared to Ag@PANI. P-CA and Ag@P-CA had a greater monolayer adsorption capacity for 2-nitrophenol and lower binding affinity as compared to PANI and Ag@PANI materials. X-ray photoelectron spectroscopy and cyclic voltammetry characterization provided reason and evidence for the higher conductivity of citric-acid-modified materials (P-CA and Ag@P-CA versus PANI and Ag@PANI). These results showed the potential utility for the optimization of adsorption/desorption and electron transfer steps during the electrochemical oxidation of nitrophenols. The oxidation process employs Ag@P-CA as the electrocatalyst by modifying polyaniline with Ag nanoparticles and citric acid, which was successfully employed to oxidize 2-nitrophenol and 4-nitrophenol with comparable selectivity and sensitivity to their relative concentrations. This work is envisaged to contribute significantly to the selective conversion of nitrophenols and electrocatalytic remediation of such waterborne contaminants. | en_US |
| dc.description.sponsorship | Government of Canada through the Natural Sciences and Engineering Research Council of Canada as a Discovery Grant (RGPIN 04315-2021) awarded to LDW. MK acknowledges the partial support provided by the University of Saskatchewan through the award of a Graduate Teaching Fellowship (GTF). | en_US |
| dc.description.version | Peer Reviewed | en_US |
| dc.identifier.citation | Khani, M.; Sammynaiken, R.;Wilson, L.D. Electrocatalytic Oxidation of Nitrophenols via Ag Nanoparticles Supported on Citric-Acid-Modified Polyaniline. Catalysts 2023, 13, 465. https:// doi.org/10.3390/catal13030465 | en_US |
| dc.identifier.doi | 10.3390/catal13030465 | |
| dc.identifier.uri | https://hdl.handle.net/10388/14799 | |
| dc.language.iso | en | en_US |
| dc.publisher | MDPI | en_US |
| dc.rights | Attribution 2.5 Canada | * |
| dc.rights.uri | http://creativecommons.org/licenses/by/2.5/ca/ | * |
| dc.subject | electrocatalyst | en_US |
| dc.subject | polyaniline | en_US |
| dc.subject | silver nanoparticle | en_US |
| dc.subject | citric acid | en_US |
| dc.subject | nitrophenols | en_US |
| dc.subject | cyclic voltammetry | en_US |
| dc.subject | oxidation process | en_US |
| dc.title | Electrocatalytic Oxidation of Nitrophenols via Ag Nanoparticles Supported on Citric-Acid-Modified Polyaniline | en_US |
| dc.type | Article | en_US |