首页|Plasmonic enhanced photo-electrochemical water splitting on amorphous silicon structures
Plasmonic enhanced photo-electrochemical water splitting on amorphous silicon structures
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NSTL
Elsevier
The application of metal nanoparticles to promote chemical reactions by catalysis is an important approach for increasing the reaction rate. For light-assisted water splitting, the utilisation of plasmonic resonance has the capability to further increase the water dissociation by means of plasmonic scattering or plasmonic catalysis. In this study, Au and Ag nanoparticles were prepared on amorphous silicon and characterised by optical, morphological, and photo-electrochemical approaches. The influence of various contributions to the reaction rate related to the presence of the nanoparticles is analysed. A significant increase of current under light conditions was achieved for both Au-and Ag-based amorphous structures. The chemical catalysis supported by plasmonic catalysis was suggested as a dominant source of the increased reaction rate. While the Au nanoparticles coverage of the surface remains the same during the characterisation, the stability of Ag nanoparticles is the key issue for practical application. Prepared Au nanoparticles exhibited stability in a harsh environment giving the perspective for practical utilisation for water splitting structures, while Ag nanoparticles showed significantly lower stability.
Water splittingPlasmonic resonanceAmorphous siliconPlasmonic catalysisAu nanoparticlesAg nanoparticlesHYDROGENCATALYSISPHOTOCATALYSTNANOPARTICLESGOLD
Kemeny, Martin、Weis, Martin、Huran, Jozef、Andok, Robert、Hotovy, Ivan、Mikolasek, Miroslav、Ondrejka, Peter
NSTL
Elsevier
