Photocatalytic hydrogen evolution on tubular shape cellulose acetate/crystalline nanocellulose/polyvinyl alcohol membranes with embedded nanocrystalline catalysts

In this work, we design an efficient and cost-effective porous membrane composed by polymeric blend that supports different photocatalytic materials. The thin (300 μm) porous photocatalytic membrane has a tubular shape and was flexible for easy handle in the reactor. The membrane is composed of a po...

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Bibliographic Details
Published in:International journal of hydrogen energy 2024-08, Vol.79, p.943-951
Main Authors: García-Ramírez, P., Diaz-Torres, L.A., Castañeda-Palafox, S.J., Villagómez-Mora, M., Ávalos-Marrón, E., López González, R.
Format: Article
Language:English
Subjects:
Aluminates
Bismuthates
Hydrogen evolution
Photocatalysis
Polymeric membrane
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Summary:In this work, we design an efficient and cost-effective porous membrane composed by polymeric blend that supports different photocatalytic materials. The thin (300 μm) porous photocatalytic membrane has a tubular shape and was flexible for easy handle in the reactor. The membrane is composed of a polymeric blend based on cellulose acetate, crystalline nanocellulose and polyvinyl alcohol, obtained by the phase inversion method, using cold water as non-solvent. Bismuthates (KBiO3, NaBiO3) and aluminates (ZnAl2O4 and Cu0·9Zn0·1Al2O4) powders were synthesized by diverse methodologies and were embedded into polymeric matrix. The hydrogen evolution performance of photocatalyst powders and photocatalytic composite membranes, under UV light irradiation during 180 min, were compared. The best result of hydrogen evolution was obtained by Cu0·9Zn0·1Al2O4 powders reaching 117.74 μmolg−1h−1 and the M−CuZn membrane reaching 90.07 μmolg−1h−1. The obtained results show the high potential of these polymeric membranes as a green alternative support for photocatalysts for hydrogen evolution. [Display omitted] •Cost-effective membrane composed by polymeric matrix (CA/CNC/PVA) such as Support for different photocatalysts.•Tubular shape, porous, flexibility and hydrophilicity character and easy of handle are shown in all membranes.•M − CuZn membrane reached 90.07 μmolg-1h-1 of hydrogen evolution performance.•The reuse of M − CuZn proved stability after three cycles of use with a decrease only 28% of initial performance.•Not sacrificial reagents were used in this work.
ISSN:0360-3199
DOI:10.1016/j.ijhydene.2024.07.059