UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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2024-11-23 17:43
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Conference: Bucharest University Faculty of Physics 2023 Meeting


Section: Physics and Technology of Renewable and Alternative Energy Sources


Title:
Photosensitivity activation of copper foam by cold plasma treatment


Authors:
Matei-Tom IACOB(1,2), Cornelia DIAC(1,2), Bogdan Ciprian MITREA(1,2), Adriana BĂLAN(1,2), Ioan STAMATIN(1,2)


*
Affiliation:
1) University of Bucharest, Faculty of Physics, 3Nano-SAE, Reasearch Centre, Magurele,PO Box MG 38, 077125, Romania

2) University of Bucharest, Faculty of Physics, Magurele,PO Box MG 38, 077125 Romania


E-mail
tom.iacob@3nanosae.org


Keywords:
photo-catalysts, light sensitivity


Abstract:
Photosensitive materials have the capacity to react in a physical or chemical way when interacting with photons. This property is used in photo-catalysts to mediate chemical reactions. Copper is known to have a special selectivity for CO2 reduction and treating this material surface in plasma, makes its sensitivity to light increase, this fact opens a way for potential photo catalyst applications. The present study shows the photoelectric activity of a copper foam with a high-surface-active-area treated in a cold plasma jet that created surface oxides resulting in modified light sensitivity performance. Evaluation was done by chronoamperometric testing this material in a photo-electrochemical cell using a UV lamp, emitting at 380nm. The results showed an incident photon-to-current efficiency of more than 50%. This is a reasonable value for a photo active material and it suggests that can be used in photo electro-catalytic CO2 reduction.


References:

Nitopi, S. et al. (2019) ‘Progress and perspectives of Electrochemical Co2 reduction on copper in aqueous electrolyte’, Chemical Reviews, 119(12), pp. 7610–7672. doi:10.1021/acs.chemrev.8b00705.

Zhang, H. et al. (2018) ‘Metal–organic frameworks and their derived materials as electrocatalysts and photocatalysts for CO2 reduction: Progress, challenges, and Perspectives’, Chemistry – A European Journal, 24(69), pp. 18137–18157. doi:10.1002/chem.201803083.



Acknowledgement:
This work was supported by a grant of the Ministry of Research, Innovation and Digitization, CNCS - UEFISCDI, project number: TE 205/2021.