Nitrogen doped carbon quantum dots conjugated with AgNi alloy nanoparticles as potential electrocatalyst for efficient water splitting

Raza Naqvi, Sayed Tayyab, Rasheed, Tahir, Majeed, Saadat, Hussain, Dilshad, Fatima, Batool, Najam ul Haq, Muhammad, Nawaz, Rahat, Ahmed, Nisar ORCID: https://orcid.org/0000-0002-7954-5251 and Noon, Tubshir 2020. Nitrogen doped carbon quantum dots conjugated with AgNi alloy nanoparticles as potential electrocatalyst for efficient water splitting. Journal of Alloys and Compounds 847 , 156492. 10.1016/j.jallcom.2020.156492

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Abstract

An ideal bifunctional electro-catalyst for water splitting is low cost, easily available and have lower over-potential. Here, a new nitrogen doped carbon dots (NDCDs)-AgNi alloy based electrocatalyst is used for electrochemical water splitting. NDCDs-AgNi alloy nanoparticles are synthesized by easy and scalable methods. NDCDs are prepared by pyrolizing ethanolamine and act as a good electrocatalyst for HER. Electrochemical activity of the catalyst is evaluated by cyclic voltammetry and linear swap voltammetry. The prepared electrocatalyst work well under acidic media. To enhance the catalytic performance of the material, the heat treatment at temperature from 300 °C to 500 °C is carried out. After series of optimizations, NDCDs-AgNi alloy demonstrated superior OER activity. The results show that the limiting current density has been increased and the heat treated samples shows HER phenomena.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry
Publisher:	Elsevier
ISSN:	0925-8388
Date of Acceptance:	21 July 2020
Last Modified:	09 Nov 2022 10:17
URI:	https://orca.cardiff.ac.uk/id/eprint/138938

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