Publication
Title
A comprehensive study of the electrodeposition of nickel nanostructures from deep eutectic solvents : self-limiting growth by electrolysis of residual water
Author
Abstract
The electrodeposition of nickel nanostructures on glassy carbon was investigated in 1:2 choline chloride - urea (1:2 ChCl-U) deep eutectic solvent (DES). By combining electrochemical techniques with ex-situ FE-SEM, XPS, HAADF-STEM and EDX, the electrochemical processes occurring during nickel deposition were better understood. Special attention was given to the interaction between the solvent and the growing nickel nanoparticles. The application of a suffciently negative potential results into the electrocatlytic hydrolisis of residual water in the DES, which leads to the formation of a mixed layer of Ni/Ni(OH)2(ads). In addition, hydrogen bonds between hydroxide species and the DES components could be formed, quenching the growth of the nickel clusters favouring their aggregation. Due to these processes, a highly dense distribution of nickel nanostructures can be obtained within a wide potential range. Understanding the role of residual water and the interactions at the interface during metal electrodeposition from DESs is essential to produce supported nanostructures in a controllable way for a broad range of applications and technologies.
Language
English
Source (journal)
The journal of physical chemistry: C : nanomaterials and interfaces. - Washington, D.C., 2007, currens
Publication
Washington, D.C. : 2017
ISSN
1932-7447 [print]
1932-7455 [online]
DOI
10.1021/ACS.JPCC.7B01104
Volume/pages
121 :17 (2017) , p. 9337-9347
ISI
000400881100027
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Project info
Electrochemical synthesis of metal nanostructures.
Colouring Atoms in 3 Dimensions (COLOURATOM).
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identifier
Creation 19.04.2017
Last edited 09.10.2023
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