2D/2D MOF/MXene Schottky Junction: Prolonged Carrier Lifetime and Enhanced Hydrogen Evolution Efficiency

[EN] Harnessing sunlight for photocatalytic overall water splitting offers a sustainable approach to renewable hydrogen (H2) production, addressing global energy and environmental challenges. However, the development of efficient and durable photocatalysts remains a significant obstacle. This study...

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Detalles Bibliográficos
Autores: Cabrero-Antonino, Maria, Uscategui-Linares, Andrés Felipe|||0000-0003-2448-9966, Ramírez-Grau, Rubén, García-Aznar, Pablo|||0000-0003-0586-0037, Sastre Navarro, German Ignacio|||0000-0003-0496-6331, Goberna-Ferrón, Sara|||0000-0002-3306-3791, Albero-Sancho, Josep|||0000-0002-4841-7206, García Gómez, Hermenegildo|||0000-0002-9664-493X, Primo Arnau, Ana Maria|||0000-0001-9205-2278, Zhang, Jianjun, Yu, Jiaguo, Xu, Feiyan
Tipo de recurso: artículo
Fecha de publicación:2025
País:España
Institución:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/228422
Acceso en línea:https://riunet.upv.es/handle/10251/228422
Access Level:acceso abierto
Palabra clave:Cu MOF
Hydrogen evolution
Prolonged lifetime
Schottky junction
Ti MXene
Descripción
Sumario:[EN] Harnessing sunlight for photocatalytic overall water splitting offers a sustainable approach to renewable hydrogen (H2) production, addressing global energy and environmental challenges. However, the development of efficient and durable photocatalysts remains a significant obstacle. This study introduces the design and performance of a 2D/2D Schottky heterojunction composed of Cu2[CuTCPP] MOF of nanometric size and exfoliated Ti3C2 MXene for visible-light-driven overall water splitting. By leveraging the extensive interfacial contact between the two components, an interfacial electric field is generated, promoting efficient charge migration and prolonging carrier lifetimes, as confirmed through systematic density functional theory simulations, in situ irradiation X-ray photoelectron spectroscopy, femtosecond transient absorption spectroscopy, and X-ray absorption spectroscopy. Ti3C2 MXene, acting as a cocatalyst for photohole transport and accumulation, reduces oxidative degradation and slows catalyst deactivation. The synergistically enhanced light absorption properties of the Cu2[CuTCPP]/Ti3C2 heterojunction result in an impressive H2 evolution rate exceeding 5000 mu mol gcat(-)1, underscoring its potential for next-generation photocatalytic systems in renewable energy applications.

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