Graphene-modified g-C3N4/ α-Fe2O3 systems for light-induced hydrogen generation
Photocatalysis represents an advanced and efficient technology for harnessing light energy. The non-toxicity, affordability, and versatility of this technique render it particularly attractive for hydrogen production via water splitting. Nevertheless, the primary challenge lies in identifying materi...
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| Language: | English |
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Elsevier
2025-04-01
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| Series: | Carbon Trends |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667056925000410 |
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| author | Wassila Touati Miroslava Filip Edelmannová Mohamed Karmaoui Ahmed Bekka Clarisse Furgeaud Chakib Alaoui Imene kadi Allah Bruno Figueiredo J.A. Labrincha Raul Arenal Kamila Koci David Maria Tobaldi |
| author_facet | Wassila Touati Miroslava Filip Edelmannová Mohamed Karmaoui Ahmed Bekka Clarisse Furgeaud Chakib Alaoui Imene kadi Allah Bruno Figueiredo J.A. Labrincha Raul Arenal Kamila Koci David Maria Tobaldi |
| author_sort | Wassila Touati |
| collection | DOAJ |
| description | Photocatalysis represents an advanced and efficient technology for harnessing light energy. The non-toxicity, affordability, and versatility of this technique render it particularly attractive for hydrogen production via water splitting. Nevertheless, the primary challenge lies in identifying materials capable of efficiently catalyzing the water splitting reaction upon exposure to light. This study presents the influence of the quantity of hematite and graphene on g-C3N4 in the context of hydrogen generation from methanol-water decomposition under UVC irradiation. Pure g-C3N4 exhibits the highest hydrogen generation efficiency. However, adding hematite decreases photocatalytic efficiency, likely due to the formation of a type II heterojunction between α-Fe2O3 and g-C3N4, which reduces the overall reduction capacity of the system. While incorporating graphene into the g-C3N4/α-Fe2O3 system enhances photocatalytic efficiency by improving electron mobility and prolonging the lifetime of photo-generated excitons, the highest yield was achieved with BUF10/GNP0.5. This research offers valuable insights into charge transfer and separation processes for photo-generated excitons within the g-C3N4/α-Fe2O3 and g-C3N4/α-Fe2O3/graphene systems in the context of light-induced hydrogen production. |
| format | Article |
| id | doaj-art-5534463c4cb645baae784ffbeda8d796 |
| institution | OA Journals |
| issn | 2667-0569 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbon Trends |
| spelling | doaj-art-5534463c4cb645baae784ffbeda8d7962025-08-20T02:24:58ZengElsevierCarbon Trends2667-05692025-04-011910049110.1016/j.cartre.2025.100491Graphene-modified g-C3N4/ α-Fe2O3 systems for light-induced hydrogen generationWassila Touati0Miroslava Filip Edelmannová1Mohamed Karmaoui2Ahmed Bekka3Clarisse Furgeaud4Chakib Alaoui5Imene kadi Allah6Bruno Figueiredo7J.A. Labrincha8Raul Arenal9Kamila Koci10David Maria Tobaldi11Laboratoire de Chimie des Matériaux Inorganiques Et Applications, Faculté de Chimie, Université des Sciences Et de la Technologie d'Oran, El-Mnaouer, Algeria; Corresponding authors.Institute of Environmental Technology, CEET,VŠB-Technical University of Ostrava, 17.listopadu 15/2172, Ostrava-Poruba, 70800, Czech RepublicLaboratoire de Chimie des Matériaux Inorganiques Et Applications, Faculté de Chimie, Université des Sciences Et de la Technologie d'Oran, El-Mnaouer, Algeria; Department of Materials and Ceramic Engineering/CICECO−Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, PortugalLaboratoire de Chimie des Matériaux Inorganiques Et Applications, Faculté de Chimie, Université des Sciences Et de la Technologie d'Oran, El-Mnaouer, AlgeriaInstituto de Nanociencia y Materiales de Aragon (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain; Laboratorio de microscopias avanzadas (LMA), U. Zaragoza, C/ Mariano Esquillor s/n, 50018 Zaragoza, SpainLaboratoire de Chimie des Matériaux Inorganiques Et Applications, Faculté de Chimie, Université des Sciences Et de la Technologie d'Oran, El-Mnaouer, AlgeriaLaboratoire de Chimie des Matériaux Inorganiques Et Applications, Faculté de Chimie, Université des Sciences Et de la Technologie d'Oran, El-Mnaouer, AlgeriaGraphenest, Lugar da Estação, Edifício Vouga Park, 3740-070, Paradela do Vouga, PortugalDepartment of Materials and Ceramic Engineering/CICECO−Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, PortugalInstituto de Nanociencia y Materiales de Aragon (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain; Laboratorio de microscopias avanzadas (LMA), U. Zaragoza, C/ Mariano Esquillor s/n, 50018 Zaragoza, Spain; ARAID Foundation, 50018 Zaragoza, SpainInstitute of Environmental Technology, CEET,VŠB-Technical University of Ostrava, 17.listopadu 15/2172, Ostrava-Poruba, 70800, Czech Republic; Corresponding authors.CNR NANOTEC Institute of Nanotechnology, Via Monteroni, Lecce 73100, ItalyPhotocatalysis represents an advanced and efficient technology for harnessing light energy. The non-toxicity, affordability, and versatility of this technique render it particularly attractive for hydrogen production via water splitting. Nevertheless, the primary challenge lies in identifying materials capable of efficiently catalyzing the water splitting reaction upon exposure to light. This study presents the influence of the quantity of hematite and graphene on g-C3N4 in the context of hydrogen generation from methanol-water decomposition under UVC irradiation. Pure g-C3N4 exhibits the highest hydrogen generation efficiency. However, adding hematite decreases photocatalytic efficiency, likely due to the formation of a type II heterojunction between α-Fe2O3 and g-C3N4, which reduces the overall reduction capacity of the system. While incorporating graphene into the g-C3N4/α-Fe2O3 system enhances photocatalytic efficiency by improving electron mobility and prolonging the lifetime of photo-generated excitons, the highest yield was achieved with BUF10/GNP0.5. This research offers valuable insights into charge transfer and separation processes for photo-generated excitons within the g-C3N4/α-Fe2O3 and g-C3N4/α-Fe2O3/graphene systems in the context of light-induced hydrogen production.http://www.sciencedirect.com/science/article/pii/S2667056925000410Water splittingg-C3N4/ α-Fe2O3g-C3N4/ α-Fe2O3/graphenePhotocatalysis |
| spellingShingle | Wassila Touati Miroslava Filip Edelmannová Mohamed Karmaoui Ahmed Bekka Clarisse Furgeaud Chakib Alaoui Imene kadi Allah Bruno Figueiredo J.A. Labrincha Raul Arenal Kamila Koci David Maria Tobaldi Graphene-modified g-C3N4/ α-Fe2O3 systems for light-induced hydrogen generation Carbon Trends Water splitting g-C3N4/ α-Fe2O3 g-C3N4/ α-Fe2O3/graphene Photocatalysis |
| title | Graphene-modified g-C3N4/ α-Fe2O3 systems for light-induced hydrogen generation |
| title_full | Graphene-modified g-C3N4/ α-Fe2O3 systems for light-induced hydrogen generation |
| title_fullStr | Graphene-modified g-C3N4/ α-Fe2O3 systems for light-induced hydrogen generation |
| title_full_unstemmed | Graphene-modified g-C3N4/ α-Fe2O3 systems for light-induced hydrogen generation |
| title_short | Graphene-modified g-C3N4/ α-Fe2O3 systems for light-induced hydrogen generation |
| title_sort | graphene modified g c3n4 α fe2o3 systems for light induced hydrogen generation |
| topic | Water splitting g-C3N4/ α-Fe2O3 g-C3N4/ α-Fe2O3/graphene Photocatalysis |
| url | http://www.sciencedirect.com/science/article/pii/S2667056925000410 |
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