resumo
Electrochemical deposition of zinc nanorods into the anodic aluminium-oxide template from ionic-liquid electrolyte is reported. For the first time, the electrodeposition from an ionic liquid is performed in a porous alumina template, anodically grown on the aluminium substrate without complete removal of the barrier layer. The two-step process was applied; first, with alternating-current pulse nucleation of zinc nanoparticles on the bottom of the pores, followed by direct-current growth of the rods. The electrolyte consisted of 0.5 M ZnCl2 in choline chloride and ethylene glycol in a 1:2 molar ratiod. The resulting zinc nanorods are approximately 3 mu m in length and 70 nm in diameter. The achieved fill factor of the pores is in the 70-80 % range.
palavras-chave
GOLD NANORODS; WAVE-GUIDE; NANOPARTICLES; CADMIUM
categoria
Electrochemistry
autores
Starykevich, M; Lisenkov, AD; Salak, AN; Ferreira, MGS; Zheludkevich, ML
nossos autores
Aleksey Lisenkov
Investigador
Andrei Salak
Investigador Principal
Maksim Starykevich
Investigador Júnior
Mário Guerreiro Silva Ferreira
Professor(a) Jubilado(a)
Mikhail Zheludkevich
Investigador Principal ConvidadoProjectos
1-D nanostructures obtained by electrodeposition from ionic liquids (PTDC/CTM-NAN/113570/2009)
agradecimentos
Financial support from the European Commission and Portuguese Foundation for Science and Technology (FCT) in the frame of PIRSES-GA-2011-295273-NANEL and PTDC/CTM-NAN/113570/2009 projects, respectively, is gratefully acknowledged.