Photocatalytic effects on Au@TiO 2 confined in BMIm.NTf 2 ionic liquid for hydrogen evolution reactions
International Journal of Hydrogen Energy, ISSN: 0360-3199, Vol: 48, Issue: 81, Page: 31629-31642
2023
- 2Citations
- 12Captures
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Article Description
We report a photocatalytic device based on gold nanoparticles (AuNPs/TiO 2 ) coated with an ionic liquid (IL) as a very active, stable, and versatile system for hydrogen evolution reactions (HERs) via methanol photo reforming (MPR) and photocatalytic water-splitting (WSR) reaction. The devices prepared by magnetron sputtering yield hybrid materials with direct Au–TiO 2 interactions that were subsequently coated with BMIm.NTf 2 ( IL@Au@TiO 2 ). The IL presence critically enhances the photocatalytic performance given its interaction with the AuNPs and TiO 2 surfaces by decreasing the flat band energy levels and the Schottky barrier thickness. The results show an increase in the number of charge carriers yielding a capacitor-like effect generated by interactions of IL and Au@TiO 2 particles. Apparent quantum yield (AQY) up to 28.3% under UV irradiation (365 nm) and 22.9% at 405 nm irradiation were observed in the HER employing the as-prepared materials.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0360319923020487; http://dx.doi.org/10.1016/j.ijhydene.2023.04.243; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85159460671&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0360319923020487; https://dx.doi.org/10.1016/j.ijhydene.2023.04.243
Elsevier BV
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