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Photoassisted methanation using CuO<sub>2</sub> nanoparticles sup | 58611
Journal of Fundamentals of Renewable Energy and Applications

Journal of Fundamentals of Renewable Energy and Applications
Open Access

ISSN: 2090-4541

+44 1300 500008

Photoassisted methanation using CuO2 nanoparticles supported on graphene as photocatalyst


Joint Event on 7th World Congress and Expo on Green Energy & 3rd World Congress on Wind & Renewable Energy

June 24-25, 2019 Barcelona, Spain

Josep Albero, Diego Mateo and Hermenegildo Garcia

Universitat Politecnica de Valencia (UPV), Spain

Scientific Tracks Abstracts: J Fundam Renewable Energy Appl

Abstract :

Photoassisted CO2 methanation can be carried out efficiently at 250oC using Cu2O nanoparticles supported on few layer graphene (Cu2O/G) as photocatalyst. The Cu2O/G photocatalyst has been prepared by chemical reduction of a Cu salt (Cu (NO3)2) with ethylene glycol in the presence of defective graphene obtained from the pyrolysis of alginate acid at 900 oC under Ar flow. Using this photocatalyst a maximum specific CH4 formation rate of 14.93 mmol/gCu2O�?�h and apparent quantum yield of 7.84 % was achieved, which is one of the highest reported values for the gas-phse methanation reaction at temperatures below Sabatier reaction (>350oC). It was found that the most probable reaction mechanism involves photoinduced electron transfer from the Cu2O/G photocatalyst to CO2, while evidence indicates that light-induced local temperature increase and H2 activation are negligible. The role of the temperature in the process has been studied, the available data suggesting that heating is needed to desorb the H2O formed as product during the methanation. The most probable reaction mechanism seems to follow dissociative pathway involving detachment of oxygen atoms from CO2.

Recent Publications:

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Biography :

Josep Albero has obtained his Chemical Engineering degree at the Jaume I University of Castellon, Spain in 2005; MSc degree at Rovira I Virgili University in 2009. He has worked in the synthesis and characterization of nanocrystalline semiconductor quantum dots for photovoltaic applications when received his PhD in the group of E. Palomares at ICIQ. After that, he joined H Garcia group in ITQ as Postdoctoral Fellow. His research interest is the charge transfer reactions in nanostructured materials and their applications in renewable energies.

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