https://doi.org/10.1140/epjp/s13360-024-05285-x
Regular Article
Ag2S nanoflakes decorated over rGO nanosheets: a sustainable and highly efficient electrocatalyst for oxygen evolution reaction
1
Department of Chemistry, Government Graduate College Taunsa Sharif, 32100, Taunsa Sharif, Punjab, Pakistan
2
Department of Physics, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, 11671, Riyadh, Saudi Arabia
3
Research Center for Advanced Materials Science (RCAMS), King Khalid University, 61413, Abha, Saudi Arabia
4
Department of Chemistry, College of Science, King Khalid University, 61413, Abha, Saudi Arabia
5
Physics Department, Faculty of Science, Tanta University, 31527, Tanta, Egypt
6
NANOTECH Center, Ural Federal University, 620002, Yekaterinburg, Russia
Received:
15
March
2024
Accepted:
17
May
2024
Published online:
15
June
2024
Energy is the basic need of world, and in this modern era to achieve global need, electrochemical water splitting knwon as process through which world can fulfill their energy requirements, but an efficient and affordable electrocatalyst is necessary for this process. Here, Ag2S/rGO nanocomposite was prepared using hydrothermal route as electrocatalyst for this (OER) process. The hydrothermal method leads to the development of nanocrystals having larger surface area and excellent morphology. The prepared nanocomposite undergoes physical and electrochemical testing. The physical characterization confirmed that Ag2S/rGO has a dynamic surface area (790.6 cm2), providing more active sites; hence, more extensive electron transformation occurs. The electrochemical testing in an alkaline medium with three electrodes was used to know about electrocatalytic action of the prepared nanocomposite. The prepared nanocrystal achieved overpotential 179.56 mV, Tafel slope (31.6 mV dec−1) and TOF (1.40 s−1) with high durability. All these finding confirmed that the fabricated Ag2S/rGO is a strong electrocatalyst for OER.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
