| Title |
Photovoltaic Electrochemically Driven Degradation of Calcon Dye with Simultaneous Green Hydrogen Production |
| ID_Doc |
9997 |
| Authors |
Cardozo, JC; da Silva, DR; Martínez-Huitle, CA; Quiroz, MA; Dos Santos, EV |
| Title |
Photovoltaic Electrochemically Driven Degradation of Calcon Dye with Simultaneous Green Hydrogen Production |
| Year |
2022 |
| Published |
Materials, 15.0, 21 |
| DOI |
10.3390/ma15217445 |
| Abstract |
In this study, for the first time, the production of green hydrogen gas (H-2) in the cathodic compartment, in concomitance with the electrochemical oxidation (EO) of an aqueous solution containing Calcon dye at the anodic compartment, was studied in a PEM-type electrochemical cell driven by a photovoltaic (PV) energy source. EO of Calcon was carried out on a Nb/BDD anode at different current densities (7.5, 15 and 30 mA cm(-2)), while a stainless steel (SS) cathode was used for green H-2 production. The results of the analysis by UV-vis spectroscopy and total organic carbon (TOC) clearly showed that the electrochemical oxidation (EO) of the Calcon dye after 180 min of electrolysis time by applying 30 mA cm(-2) reached up to 90% of degradation and 57% of TOC removal. Meanwhile, under these experimental conditions, a green H-2 production greater than 0.9 L was achieved, with a Faradaic efficiency of 98%. The hybrid electrolysis strategy is particularly attractive in the context of a circular economy, as these can be coupled with the use of more complex water matrices to transform organic depollution into an energy resource to produce H-2 as a chemical energy carrier. |
| Author Keywords |
photovoltaic array; green hydrogen; electrochemical oxidation; dye; simultaneous processes |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000881416600001 |
| WoS Category |
Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter |
| Research Area |
Chemistry; Materials Science; Metallurgy & Metallurgical Engineering; Physics |
| PDF |
https://www.mdpi.com/1996-1944/15/21/7445/pdf?version=1667440485
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