Insights into the Photoelectrocatalytic Behavior of gCN-Based Anode Materials Supported on Ni Foams
Graphitic carbon nitride (gCN) is a promising <i>n</i>-type semiconductor widely investigated for photo-assisted water splitting, but less studied for the (photo)electrochemical degradation of aqueous organic pollutants. In these fields, attractive perspectives for advancements are offer...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article |
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MDPI AG
2023-03-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/6/1035 |
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| author | Serge Benedoue Mattia Benedet Alberto Gasparotto Nicolas Gauquelin Andrey Orekhov Johan Verbeeck Roberta Seraglia Gioele Pagot Gian Andrea Rizzi Vincenzo Balzano Luca Gavioli Vito Di Noto Davide Barreca Chiara Maccato |
| author_facet | Serge Benedoue Mattia Benedet Alberto Gasparotto Nicolas Gauquelin Andrey Orekhov Johan Verbeeck Roberta Seraglia Gioele Pagot Gian Andrea Rizzi Vincenzo Balzano Luca Gavioli Vito Di Noto Davide Barreca Chiara Maccato |
| author_sort | Serge Benedoue |
| collection | DOAJ |
| description | Graphitic carbon nitride (gCN) is a promising <i>n</i>-type semiconductor widely investigated for photo-assisted water splitting, but less studied for the (photo)electrochemical degradation of aqueous organic pollutants. In these fields, attractive perspectives for advancements are offered by a proper engineering of the material properties, e.g., by depositing gCN onto conductive and porous scaffolds, tailoring its nanoscale morphology, and functionalizing it with suitable cocatalysts. The present study reports on a simple and easily controllable synthesis of gCN flakes on Ni foam substrates by electrophoretic deposition (EPD), and on their eventual decoration with Co-based cocatalysts [CoO, CoFe<sub>2</sub>O<sub>4</sub>, cobalt phosphate (CoPi)] via radio frequency (RF)-sputtering or electrodeposition. After examining the influence of processing conditions on the material characteristics, the developed systems are comparatively investigated as (photo)anodes for water splitting and photoelectrocatalysts for the degradation of a recalcitrant water pollutant [potassium hydrogen phthalate (KHP)]. The obtained results highlight that while gCN decoration with Co-based cocatalysts boosts water splitting performances, bare gCN as such is more efficient in KHP abatement, due to the occurrence of a different reaction mechanism. The related insights, provided by a multi-technique characterization, may provide valuable guidelines for the implementation of active nanomaterials in environmental remediation and sustainable solar-to-chemical energy conversion. |
| first_indexed | 2024-03-11T06:05:37Z |
| format | Article |
| id | doaj.art-dfeabc5e216a4fda997d91319438cc44 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T06:05:37Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-dfeabc5e216a4fda997d91319438cc442023-11-17T13:00:37ZengMDPI AGNanomaterials2079-49912023-03-01136103510.3390/nano13061035Insights into the Photoelectrocatalytic Behavior of gCN-Based Anode Materials Supported on Ni FoamsSerge Benedoue0Mattia Benedet1Alberto Gasparotto2Nicolas Gauquelin3Andrey Orekhov4Johan Verbeeck5Roberta Seraglia6Gioele Pagot7Gian Andrea Rizzi8Vincenzo Balzano9Luca Gavioli10Vito Di Noto11Davide Barreca12Chiara Maccato13Department of Chemical Sciences, Padova University and INSTM, 35131 Padova, ItalyDepartment of Chemical Sciences, Padova University and INSTM, 35131 Padova, ItalyDepartment of Chemical Sciences, Padova University and INSTM, 35131 Padova, ItalyEMAT and NANOlab Center of Excellence, University of Antwerp, 2020 Antwerpen, BelgiumEMAT and NANOlab Center of Excellence, University of Antwerp, 2020 Antwerpen, BelgiumEMAT and NANOlab Center of Excellence, University of Antwerp, 2020 Antwerpen, BelgiumCNR-ICMATE and INSTM, Department of Chemical Sciences, Padova University, 35131 Padova, ItalySection of Chemistry for the Technology (ChemTech), Department of Industrial Engineering, University of Padova and INSTM, 35131 Padova, ItalyDepartment of Chemical Sciences, Padova University and INSTM, 35131 Padova, ItalyInterdisciplinary Laboratories for Advanced Materials Physics (i-LAMP), Dipartimento di Matematica e Fisica, Università Cattolica del Sacro Cuore, 25133 Brescia, ItalyInterdisciplinary Laboratories for Advanced Materials Physics (i-LAMP), Dipartimento di Matematica e Fisica, Università Cattolica del Sacro Cuore, 25133 Brescia, ItalySection of Chemistry for the Technology (ChemTech), Department of Industrial Engineering, University of Padova and INSTM, 35131 Padova, ItalyCNR-ICMATE and INSTM, Department of Chemical Sciences, Padova University, 35131 Padova, ItalyDepartment of Chemical Sciences, Padova University and INSTM, 35131 Padova, ItalyGraphitic carbon nitride (gCN) is a promising <i>n</i>-type semiconductor widely investigated for photo-assisted water splitting, but less studied for the (photo)electrochemical degradation of aqueous organic pollutants. In these fields, attractive perspectives for advancements are offered by a proper engineering of the material properties, e.g., by depositing gCN onto conductive and porous scaffolds, tailoring its nanoscale morphology, and functionalizing it with suitable cocatalysts. The present study reports on a simple and easily controllable synthesis of gCN flakes on Ni foam substrates by electrophoretic deposition (EPD), and on their eventual decoration with Co-based cocatalysts [CoO, CoFe<sub>2</sub>O<sub>4</sub>, cobalt phosphate (CoPi)] via radio frequency (RF)-sputtering or electrodeposition. After examining the influence of processing conditions on the material characteristics, the developed systems are comparatively investigated as (photo)anodes for water splitting and photoelectrocatalysts for the degradation of a recalcitrant water pollutant [potassium hydrogen phthalate (KHP)]. The obtained results highlight that while gCN decoration with Co-based cocatalysts boosts water splitting performances, bare gCN as such is more efficient in KHP abatement, due to the occurrence of a different reaction mechanism. The related insights, provided by a multi-technique characterization, may provide valuable guidelines for the implementation of active nanomaterials in environmental remediation and sustainable solar-to-chemical energy conversion.https://www.mdpi.com/2079-4991/13/6/1035graphitic carbon nitrideCoPiCoOCoFe<sub>2</sub>O<sub>4</sub>phthalateswastewater remediation |
| spellingShingle | Serge Benedoue Mattia Benedet Alberto Gasparotto Nicolas Gauquelin Andrey Orekhov Johan Verbeeck Roberta Seraglia Gioele Pagot Gian Andrea Rizzi Vincenzo Balzano Luca Gavioli Vito Di Noto Davide Barreca Chiara Maccato Insights into the Photoelectrocatalytic Behavior of gCN-Based Anode Materials Supported on Ni Foams Nanomaterials graphitic carbon nitride CoPi CoO CoFe<sub>2</sub>O<sub>4</sub> phthalates wastewater remediation |
| title | Insights into the Photoelectrocatalytic Behavior of gCN-Based Anode Materials Supported on Ni Foams |
| title_full | Insights into the Photoelectrocatalytic Behavior of gCN-Based Anode Materials Supported on Ni Foams |
| title_fullStr | Insights into the Photoelectrocatalytic Behavior of gCN-Based Anode Materials Supported on Ni Foams |
| title_full_unstemmed | Insights into the Photoelectrocatalytic Behavior of gCN-Based Anode Materials Supported on Ni Foams |
| title_short | Insights into the Photoelectrocatalytic Behavior of gCN-Based Anode Materials Supported on Ni Foams |
| title_sort | insights into the photoelectrocatalytic behavior of gcn based anode materials supported on ni foams |
| topic | graphitic carbon nitride CoPi CoO CoFe<sub>2</sub>O<sub>4</sub> phthalates wastewater remediation |
| url | https://www.mdpi.com/2079-4991/13/6/1035 |
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