Detail publikace

Improved Electrochemical Detection of Zinc Ions Using Electrode Modified with Electrochemically Reduced Graphene Oxide

KUDR, J. RICHTERA, L. NEJDL, L. XHAXHIU, K. VÍTEK, P. RUTTKAY-NEDECKÝ, B. HYNEK, D. KOPEL, P. ADAM, V. KIZEK, R.

Originální název

Improved Electrochemical Detection of Zinc Ions Using Electrode Modified with Electrochemically Reduced Graphene Oxide

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Increasing urbanization and industrialization lead to the release of metals into the biosphere, which has become a serious issue for public health. In this paper, the direct electrochemical reduction of zinc ions is studied using electrochemically reduced graphene oxide (ERGO) modified glassy carbon electrode (GCE). The graphene oxide (GO) was fabricated using modified Hummers method and was electrochemically reduced on the surface of GCE by performing cyclic voltammograms from 0 to -1.5 V. The modification was optimized and properties of electrodes were determined using electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). The determination of Zn(II) was performed using differential pulse voltammetry technique, platinum wire as a counter electrode, and Ag/AgCl/3 M KCl reference electrode. Compared to the bare GCE the modified GCE/ERGO shows three times better electrocatalytic activity towards zinc ions, with an increase of reduction current along with a negative shift of reduction potential. Using GCE/ERGO detection limit 5 ng.mL-1 was obtained.

Klíčová slova

carbon; cyclic voltammetry; electrochemical impedance spectroscopy; electrochemistry; graphene oxide; heavy metal detection; reduced graphene oxide

Autoři

KUDR, J.; RICHTERA, L.; NEJDL, L.; XHAXHIU, K.; VÍTEK, P.; RUTTKAY-NEDECKÝ, B.; HYNEK, D.; KOPEL, P.; ADAM, V.; KIZEK, R.

Vydáno

1. 1. 2016

Nakladatel

MDPI

ISSN

1996-1944

Periodikum

Materials

Ročník

9

Číslo

1

Stát

Švýcarská konfederace

Strany od

1

Strany do

12

Strany počet

12

URL

http://www.mdpi.com/1996-1944/9/1/31

Plný text v Digitální knihovně

http://hdl.handle.net/11012/63723

BibTex

@article{BUT128495,
  author="Jiří {Kudr} and Lukáš {Richtera} and Lukáš {Nejdl} and Kledi {Xhaxhiu} and Petr {Vítek} and Branislav {Ruttkay-Nedecký} and David {Hynek} and Pavel {Kopel} and Vojtěch {Adam} and René {Kizek}",
  title="Improved Electrochemical Detection of Zinc Ions Using Electrode Modified with Electrochemically Reduced Graphene Oxide",
  journal="Materials",
  year="2016",
  volume="9",
  number="1",
  pages="1--12",
  doi="10.3390/ma9010031",
  issn="1996-1944",
  url="http://www.mdpi.com/1996-1944/9/1/31"
}