Investigations of a-Si 1-x C x Thin Films as a Catalyst for CO 2 Photoelectrochemical Reduction
2020; Polish Academy of Sciences; Volume: 137; Issue: 4 Linguagem: Inglês
10.12693/aphyspola.137.523
ISSN1898-794X
AutoresS. Kaci, M.A. Ouadfel, Y. Ouadah, L. Talbi, A. Boukezzata, K. Benfadel, I. Bozetine, A. Keffous, S. Achacha, Amar Manseri, C. Yaddaden, Sabrina Belaid, S. Belhousse,
Tópico(s)Electrocatalysts for Energy Conversion
ResumoIn this work we investigated the catalytic property of amorphous silicon carbide (a-SiC) and SiC loaded copper (Cu-SiC) thin films as photocathodes for the photoelectrochemical reduction of CO2.The formers (a-SiC) were elaborated by magnetron sputtering method on both p-type silicon (p-Si) and glass substrates.The Cu-surface modification of a-SiC (Cu-SiC) thin films were well carried out by Cu particles deposited by evaporation method on the surface of the SiC thin films.The catalytic activity was studied for both simple a-SiC and Cu-surface modified SiC thin films.The results showed that the Cu-modified a-SiC speeds up the photocatalytic activity compared to the unmodified a-SiC.The conduction band is suitably positioned with respect to the CH3OH/CO2 leading to a good reduction of CO2 using visible irradiation.
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