Influence of cocatalysts (Ni, Co, and Cu) and synthesis method on the photocatalytic activity of exfoliated graphitic carbon nitride for hydrogen production
Rana, Adeem Ghaffar ![Identificador ORCID](/img/uab/orcid.ico)
(Technical University of Munich. Department of Life Science Engineering)
Schwarze, Michael (Technische Universität Berlin. Department of Chemistry)
Tasbihi, Minoo ![Identificador ORCID](/img/uab/orcid.ico)
(Technische Universität Berlin. Department of Chemistry)
Sala Román, Xavier ![Identificador ORCID](/img/uab/orcid.ico)
(Universitat Autònoma de Barcelona. Departament de Química)
García-Antón, Jordi ![Identificador ORCID](/img/uab/orcid.ico)
(Universitat Autònoma de Barcelona. Departament de Química)
Minceva, Mirjana ![Identificador ORCID](/img/uab/orcid.ico)
(Technical University of Munich. Department of Life Science Engineering)
Fecha: |
2022 |
Descripción: |
13 pàg. |
Resumen: |
Exfoliated graphitic carbon nitride (ex-g-CN) was synthesized and loaded with non-noble metals (Ni, Cu, and Co). The synthesized catalysts were tested for hydrogen production using a 300-W Xe lamp equipped with a 395 nm cutoff filter. A noncommercial double-walled quartz-glass reactor irradiated from the side was used with a 1 g/L catalyst in 20 mL of a 10 vol% triethanolamine aqueous solution. For preliminary screening, the metal-loaded ex-g-CN was synthesized using the incipient wetness impregnation method. The highest hydrogen production was observed on the Ni-loaded ex-g-CN, which was selected to assess the impact of the synthesis method on hydrogen production. Ni-loaded ex-g-CN was synthesized using different synthesis methods: incipient wetness impregnation, colloidal deposition, and precipitation deposition. The catalysts were characterized by X-ray powder diffraction, X-ray photoelectron spectroscopy, nitrogen adsorption using the Brunauer-Emmett-Teller method, and transmission electron microscopy. The Ni-loaded ex-g-CN synthesized using the colloidal method performed best with a hydrogen production rate of 43. 6 µmol h−1 g−1. By contrast, the catalysts synthesized using the impregnation and precipitation methods were less active, with 28. 2 and 10. 1 µmol h−1 g−1, respectively. The hydrogen production performance of the suspended catalyst (440 µmol m−2 g−1) showed to be superior to that of the corresponding immobilized catalyst (236 µmol m−2 g−1). |
Ayudas: |
Agencia Estatal de Investigación PID2019-104171-RB-I00
|
Nota: |
Altres ajuts: Sala thanks ICREA for the ICREA Academia award 2020. |
Derechos: |
Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. ![Creative Commons](/img/licenses/by.ico) |
Lengua: |
Anglès |
Documento: |
Article ; recerca ; Versió publicada |
Materia: |
Graphitic carbon nitride ;
Water splitting ;
Hydrogen production ;
Nickel ;
Cocatalyst deposition ;
SDG 7 - Affordable and Clean Energy |
Publicado en: |
Nanomaterials, Vol. 12, issue 22 (Nov. 2022) , art. 4006, ISSN 2079-4991 |
DOI: 10.3390/nano12224006
PMID: 36432291
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Registro creado el 2023-03-09, última modificación el 2023-03-16