Electrodeposition of 1-D tellurium nanostructure on gold surface from choline chloride-urea and choline chloride-ethylene glycol mixtures

dos Santos, Luis P.M.; Freire, Rafael M.; Michea, Sebastian; Denardin, Juliano C.; Araújo, Daniel B.; Barros, Eduardo B.; Correia, Adriana N.; de Lima-Neto, Pedro

Abstract

The electrodeposition of Te on Au substrate was investigated in either choline chloride-urea and in choline chloride-ethylene glycol deep eutectic solvents, at a molar ration of 1:2, containing 0.05 mol L-1 TeCl4. The electrodeposition of Te on Au electrode followed a three-dimensional progressive nucleation mechanism in both eutectic solvents. The diffusion coefficients of Te4+ species as a function of temperature were well fitted by a like-Arrhenius equation in both plating solutions. The apparent activation energies were 22.20 and 22.55 kJ mol(-1) for Scharifker-Hills and Cottrell's models, respectively, in 1 ChCl:2EG. On the other hand, in 1ChCl:2 U these values were 59.20 and 57.80 kJ mol(-1). In addition. SEM micrographs of Te electrodeposits from both revealed a large-scale Te rods-like morphology with hexagonal cross-section in nanoscale regime uniformly distributed on electrode surface. TEM investigation suggested that Te single-crystalline grew perpendicular direction of (100) planes which implied in the preferential growth direction of [001]. (C) 2019 Elsevier B.V. All rights reserved.

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Título según WOS: Electrodeposition of 1-D tellurium nanostructure on gold surface from choline chloride-urea and choline chloride-ethylene glycol mixtures
Título según SCOPUS: Electrodeposition of 1-D tellurium nanostructure on gold surface from choline chloride-urea and choline chloride-ethylene glycol mixtures
Título de la Revista: JOURNAL OF MOLECULAR LIQUIDS
Volumen: 288
Editorial: Elsevier
Fecha de publicación: 2019
Idioma: English
DOI:

10.1016/j.molliq.2019.111038

Notas: ISI, SCOPUS