Template-free electrochemical deposition of tellurium nanowires with eutectic solvents
Template-free electrochemical deposition of tellurium nanowires with eutectic solvents
Electrochemical deposition of tellurium from deep eutectic solvents (DES) at gold film electrodes produced films of tellurium nanowires. The deposition was evenly distributed over the gold surface, with an average diameter of ∼70 nm and length of ∼1 µm. Deposition was extremely sensitive to the applied potential, tellurium concentration and deposition bath temperature, with deviations away from optimised conditions preventing the formation of the desired nanostructure. Interestingly, replacing the chloride in a popular eutectic solvent with bromide or iodide had a significant impact on the resultant film structure, with bromide giving no clearly defined nanostructure but iodide giving nanoplatelets. This demonstrates a strong control of tellurium nanostructure by halide ions, offering a way to two distinct nanostructures from the same core experimental set up.
Deep eutectic solvents, electrodeposition, tellurium, nanoplatelets
Perry, Sam
8e204d86-4a9c-4a5d-9932-cf470174648e
White, Joshua
3025791c-ba86-4207-8059-19ff2617122c
Nandhakumar, Iris S.
e9850fe5-1152-4df8-8a26-ed44b5564b04
Perry, Sam
8e204d86-4a9c-4a5d-9932-cf470174648e
White, Joshua
3025791c-ba86-4207-8059-19ff2617122c
Nandhakumar, Iris S.
e9850fe5-1152-4df8-8a26-ed44b5564b04
Perry, Sam, White, Joshua and Nandhakumar, Iris S.
(2022)
Template-free electrochemical deposition of tellurium nanowires with eutectic solvents.
Electrochimica Acta, 439, [141674].
(doi:10.1016/j.electacta.2022.141674).
(In Press)
Abstract
Electrochemical deposition of tellurium from deep eutectic solvents (DES) at gold film electrodes produced films of tellurium nanowires. The deposition was evenly distributed over the gold surface, with an average diameter of ∼70 nm and length of ∼1 µm. Deposition was extremely sensitive to the applied potential, tellurium concentration and deposition bath temperature, with deviations away from optimised conditions preventing the formation of the desired nanostructure. Interestingly, replacing the chloride in a popular eutectic solvent with bromide or iodide had a significant impact on the resultant film structure, with bromide giving no clearly defined nanostructure but iodide giving nanoplatelets. This demonstrates a strong control of tellurium nanostructure by halide ions, offering a way to two distinct nanostructures from the same core experimental set up.
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Accepted/In Press date: 3 December 2022
Keywords:
Deep eutectic solvents, electrodeposition, tellurium, nanoplatelets
Identifiers
Local EPrints ID: 505868
URI: http://eprints.soton.ac.uk/id/eprint/505868
ISSN: 0013-4686
PURE UUID: 2612b1af-6047-42ce-b28f-eab44014a330
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Date deposited: 21 Oct 2025 17:04
Last modified: 22 Oct 2025 01:56
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Author:
Sam Perry
Author:
Joshua White
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