Publication detail

Behaviour of zinc complexes and zinc sulphide nanoparticles revealed by using screen printed electrodes and spectrometry

NEJDL, L. RUTTKAY-NEDECKÝ, B. KUDR, J. KREMPLOVÁ, M. CERNEI, N. PRÁŠEK, J. KONEČNÁ, M. HUBÁLEK, J. ZÍTKA, O. KYNICKÝ, J. KOPEL, P. KIZEK, R. ADAM, V.

Original Title

Behaviour of zinc complexes and zinc sulphide nanoparticles revealed by using screen printed electrodes and spectrometry

Type

journal article in Web of Science

Language

English

Original Abstract

In this study, we focused on microfluidic electrochemical analysis of zinc complexes (Zn(phen)(his)Cl-2, Zn(his)Cl-2) and ZnS quantum dots (QDs) using printed electrodes. This method was chosen due to the simple (easy to use) instrumentation and variable setting of flows. Reduction signals of zinc under the strictly defined and controlled conditions (pH, temperature, flow rate, accumulation time and applied potential) were studied. We showed that the increasing concentration of the complexes (Zn(phen)(his)Cl-2, Zn(his)Cl-2) led to a decrease in the electrochemical signal and a significant shift of the potential to more positive values. The most likely explanation of this result is that zinc is strongly bound in the complex and its distribution on the electrode is very limited. Changing the pH from 3.5 to 5.5 resulted in a significant intensification of the Zn(II) reduction signal. The complexes were also characterized by UV/VIS spectrophotometry, chromatography, and ESI-QTOF mass spectrometry.

Keywords

electrochemical analysis, differential pulse voltammetry, screen printed electrode; spectrometry, Zn(II)

Authors

NEJDL, L.; RUTTKAY-NEDECKÝ, B.; KUDR, J.; KREMPLOVÁ, M.; CERNEI, N.; PRÁŠEK, J.; KONEČNÁ, M.; HUBÁLEK, J.; ZÍTKA, O.; KYNICKÝ, J.; KOPEL, P.; KIZEK, R.; ADAM, V.

RIV year

2013

Released

25. 10. 2013

Publisher

MDPI AQ

Location

Basel, Switzerland

ISBN

1424-8220

Periodical

SENSORS

Year of study

13

Number

11

State

Swiss Confederation

Pages from

14417

Pages to

14437

Pages count

21

URL

http://www.mdpi.com/1424-8220/13/11/14417/htm

Full text in the Digital Library

http://hdl.handle.net/11012/70091

BibTex

@article{BUT112143,
  author="Lukáš {Nejdl} and Branislav {Ruttkay-Nedecký} and Jiří {Kudr} and Monika {Kremplová} and Natalia Vladimirovna {Cernei} and Jan {Prášek} and Marie {Konečná} and Jaromír {Hubálek} and Ondřej {Zítka} and Jindřich {Kynický} and Pavel {Kopel} and René {Kizek} and Vojtěch {Adam}",
  title="Behaviour of zinc complexes and zinc sulphide nanoparticles revealed by using screen printed electrodes and spectrometry",
  journal="SENSORS",
  year="2013",
  volume="13",
  number="11",
  pages="14417--14437",
  doi="10.3390/s131114417",
  issn="1424-8220",
  url="http://www.mdpi.com/1424-8220/13/11/14417/htm"
}