Light-driven hydrogen evolution assisted by covalent organic frameworks
Romero Fernández, Nuria (Universitat Autònoma de Barcelona. Departament de Química)
Bofill Arasa, Roger (Universitat Autònoma de Barcelona. Departament de Química)
Francàs Forcada, Laia (Universitat Autònoma de Barcelona. Departament de Química)
García-Antón, Jordi (Universitat Autònoma de Barcelona. Departament de Química)
Sala Román, Xavier (Universitat Autònoma de Barcelona. Departament de Química)

Fecha:	2021
Resumen:	Covalent organic frameworks (COFs) are crystalline porous organic polymers built from covalent organic blocks that can be photochemically active when incorporating organic semiconducting units, such as triazine rings or diacetylene bridges. The bandgap, charge separation capacity, porosity, wettability, and chemical stability of COFs can be tuned by properly choosing their constitutive building blocks, by extension of conjugation, by adjustment of the size and crystallinity of the pores, and by synthetic post-functionalization. This review focuses on the recent uses of COFs as photoactive platforms for the hydrogen evolution reaction (HER), in which usually metal nanoparticles (NPs) or metallic compounds (generally Pt-based) act as co-catalysts. The most promising COF-based photocatalytic HER systems will be discussed, and special emphasis will be placed on rationalizing their structure and light-harvesting properties in relation to their catalytic activity and stability under turnover conditions. Finally, the aspects that need to be improved in the coming years will be discussed, such as the degree of dispersibility in water, the global photocatalytic efficiency, and the robustness and stability of the hybrid systems, putting emphasis on both the COF and the metal co-catalyst.
Ayudas:	Agencia Estatal de Investigación PID2019-104171RB-I00 Ministerio de Ciencia e Innovación RYC2018-025394-I
Nota:	Altres ajuts: RSC
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.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Materia:	Covalent organic framework ; Covalent triazine framework ; Photocatalysis ; Hydrogen evolution ; Metal nanoparticle ; Co-catalyst ; Pt-doped COF ; Bandgap ; Charge separation ; Apparent quantum efficiency
Publicado en:	Catalysts, Vol. 11, Issue 6 (June 2021) , art. 754, ISSN 2073-4344

DOI: 10.3390/catal11060754

17 p, 2.1 MB

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