Synthesis of Ni nanoclusters supported on diamond by plasma technique and their electrochemical properties

Nikita Nikolaev a, Victoria Isakova a, Natalia Vnukova a b, Victoria Еlesina a b, Gariy Glushenko a, Yevgeny Tomashevich a c, Grigory Churilov // Diamond And Related Materials //

https://doi.org/10.1016/j.diamond.2024.110844

In this study, particles of synthetic undoped diamond (DN) obtained via the high pressure – high temperature method were coated with a nickel shell using metallic nickel plasma in a two-jet plasma generator with gas vortex and magnetic flux stabilization. Through the use of scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy, we observed the formation of a nickel diamond composite with a core-shell structure, where DN serves as the core and Ni nanoclusters form the shell (DN@Ni). The results of voltammetric analysis indicated that DN@Ni, when deposited on a graphite electrode, exhibited significant electrocatalytic activity in the oxidation of methanol and paracetamol in an alkaline electrolyte.


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