Electrodeposition of silver amalgam particles on ITO - Towards
novel electrode material

J 2018

Electrodeposition of silver amalgam particles on ITO - Towards novel electrode material

DANHEL, A.; F. LIGMAJER; T. SIKOLA; A. WALCARIUS; Miroslav FOJTA et al.

Základní údaje

Originální název

Electrodeposition of silver amalgam particles on ITO - Towards novel electrode material

Autoři

DANHEL, A.; F. LIGMAJER; T. SIKOLA; A. WALCARIUS a Miroslav FOJTA

Vydání

Journal of Electroanalytical Chemistry, Lausanne, Elsevier, 2018, 1572-6657

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10406 Analytical chemistry

Stát vydavatele

Švýcarsko

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 3.218

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14740/18:00104756

Organizační jednotka

Středoevropský technologický institut

Klíčová slova anglicky

DNA; Electrodeposition; Indium-tin oxide; Microscopy; Organic nitro compound; Silver amalgam

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 13. 3. 2019 11:16, Mgr. Pavla Foltynová, Ph.D.

Anotace

V originále

Silver solid amalgam represents up to now the most suitable alternative electrode material to metallic mercury in electroanalytical chemistry. Controlled electrodeposition of variable (sub)micrometer-sized silver amalgam particles (AgAP) on the surface of transparent indium-tin oxide (ITO) electrode from an electrolyte containing Ag+ and Hg2+ ions is reported here, as a novel perspective method suitable for preparation of nano-structured silver amalgam electrode material. Elemental analysis of the composition and morphology of the AgAP decorating the ITO was studied by scanning electron microscopy including energy-disperse X-ray spectroscopy and by image processing software. Particle composition, size, and surface coverage are controllable by selection of the Ag+/Hg2+ ratio in the electrodeposition solution and by setting of individual parameters of applied double pulsed/potential chronoamperometry. Applicable potential window of thus prepared ITO-AgAP electrode was found to be within +0.2 to -1.0 V in 0.2 acetate buffer pH 5.0. Utilized voltammetric and chronoamperometric methods revealed significant enhancement in electrochemical reducibility of selected model organic nitro compound (shift of the peak potential about 300 mV to more positive potentials). Its further employment in UV/Vis spectroelectrochemical cell provided information about number of consumed electrons and kinetic characteristics. Furthermore preferential adsorption of calf thymus DNA at AgAP than ITO was observed by fluorescence microscopy indicating its potential applicability in (bio-)spectroelectrochemical methods. Further advantages and potential applications are also proposed and discussed.

Citovat

DANHEL, A.; F. LIGMAJER; T. SIKOLA; A. WALCARIUS a Miroslav FOJTA. Electrodeposition of silver amalgam particles on ITO - Towards novel electrode material. Journal of Electroanalytical Chemistry. Lausanne: Elsevier, 2018, roč. 821, JUL, s. 53-59. ISSN 1572-6657. Dostupné z: https://doi.org/10.1016/j.jelechem.2017.12.008.

@article{1474638,
   author = {Danhel, A. and Ligmajer, F. and Sikola, T. and Walcarius, A. and Fojta, Miroslav},
   article_location = {Lausanne},
   article_number = {JUL},
   doi = {https://doi.org/10.1016/j.jelechem.2017.12.008},
   keywords = {DNA; Electrodeposition; Indium-tin oxide; Microscopy; Organic nitro compound; Silver amalgam},
   language = {eng},
   issn = {1572-6657},
   journal = {Journal of Electroanalytical Chemistry},
   title = {Electrodeposition of silver amalgam particles on ITO - Towards novel electrode material},
   volume = {821},
   year = {2018}
}

TY  - JOUR
ID  - 1474638
AU  - Danhel, A. - Ligmajer, F. - Sikola, T. - Walcarius, A. - Fojta, Miroslav
PY  - 2018
TI  - Electrodeposition of silver amalgam particles on ITO - Towards novel electrode material
JF  - Journal of Electroanalytical Chemistry
VL  - 821
IS  - JUL
SP  - 53-59
EP  - 53-59
PB  - Elsevier
SN  - 15726657
KW  - DNA
KW  - Electrodeposition
KW  - Indium-tin oxide
KW  - Microscopy
KW  - Organic nitro compound
KW  - Silver amalgam
N2  - Silver solid amalgam represents up to now the most suitable alternative electrode material to metallic mercury in electroanalytical chemistry. Controlled electrodeposition of variable (sub)micrometer-sized silver amalgam particles (AgAP) on the surface of transparent indium-tin oxide (ITO) electrode from an electrolyte containing Ag+ and Hg2+ ions is reported here, as a novel perspective method suitable for preparation of nano-structured silver amalgam electrode material. Elemental analysis of the composition and morphology of the AgAP decorating the ITO was studied by scanning electron microscopy including energy-disperse X-ray spectroscopy and by image processing software. Particle composition, size, and surface coverage are controllable by selection of the Ag+/Hg2+ ratio in the electrodeposition solution and by setting of individual parameters of applied double pulsed/potential chronoamperometry. Applicable potential window of thus prepared ITO-AgAP electrode was found to be within +0.2 to -1.0 V in 0.2 acetate buffer pH 5.0. Utilized voltammetric and chronoamperometric methods revealed significant enhancement in electrochemical reducibility of selected model organic nitro compound (shift of the peak potential about 300 mV to more positive potentials). Its further employment in UV/Vis spectroelectrochemical cell provided information about number of consumed electrons and kinetic characteristics. Furthermore preferential adsorption of calf thymus DNA at AgAP than ITO was observed by fluorescence microscopy indicating its potential applicability in (bio-)spectroelectrochemical methods. Further advantages and potential applications are also proposed and discussed.
ER  -

DANHEL, A.; F. LIGMAJER; T. SIKOLA; A. WALCARIUS a Miroslav FOJTA. Electrodeposition of silver amalgam particles on ITO - Towards novel electrode material. \textit{Journal of Electroanalytical Chemistry}. Lausanne: Elsevier, 2018, roč.~821, JUL, s.~53-59. ISSN~1572-6657. Dostupné z: https://doi.org/10.1016/j.jelechem.2017.12.008.

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