J 2018

Graphene Oxide from Improved Hummers' Method: Is This Material Suitable for Reproducible Electrochemical (Bio)Sensing?

LACINA, Karel, Ondřej KUBESA, Veronika HORÁČKOVÁ, Zdeněk MORAVEC, Jan KUTA et. al.

Basic information

Original name

Graphene Oxide from Improved Hummers' Method: Is This Material Suitable for Reproducible Electrochemical (Bio)Sensing?

Authors

LACINA, Karel (203 Czech Republic, guarantor, belonging to the institution), Ondřej KUBESA (203 Czech Republic, belonging to the institution), Veronika HORÁČKOVÁ (203 Czech Republic, belonging to the institution), Zdeněk MORAVEC (203 Czech Republic, belonging to the institution), Jan KUTA (203 Czech Republic, belonging to the institution), Vanýsek PETR (203 Czech Republic) and Petr SKLÁDAL (203 Czech Republic, belonging to the institution)

Edition

ECS Journal of Solid State Science and Technology, 2018, 2162-8769

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10406 Analytical chemistry

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 1.795

RIV identification code

RIV/00216224:14740/18:00105948

Organization unit

Central European Institute of Technology

DOI

UT WoS

000446829400001

Keywords in English

Graphene; Graphene Oxide; Improved Hummers' Method; Electrochemical (Bio)Sensing

Tags

Změněno: 23/4/2024 14:53, Mgr. Michal Petr

Abstract

V originále

Graphene as a superior nanomaterial is currently omnipresent and electroanalytical applications are not an exception. In this contribution, its suitability for such applications was critically assessed. We synthesized graphene oxide (GO) in five separate but identical experiments using the improved Hummers' method - well-known and extensively utilized procedure which is typically followed by various operations leading to reduced graphene oxide material. These five repeated trials were precisely controlled to keep the experimental conditions as identical as possible. The resulting five individual GO products were compared by means of elemental analysis, Raman spectroscopy, ICP-MS and AFM. The possible employment of such graphene products - electrochemically reduced GO - for electroanalytical purposes was also probed from the viewpoint of the reproducibility of modification of electrodes and the results seem disconcerting, indicating poor reproducibility. No similar study in reproducibility has been performed until now, since all previous reports always compared only different methods of preparation and only discrete experiments of preparation - repeatability has not been properly addressed.

Links

CZ.02.1.01/0.0/0.0/16_013/0001761, interní kód MU
Name: RECETOX RI - OP VVV (Acronym: RECETOX RI)
Investor: Ministry of Education, Youth and Sports of the CR, Priority axis 1: Strengthening capacities for high-quality research
LM2015043, research and development project
Name: Česká infrastruktura pro integrativní strukturní biologii (Acronym: CIISB)
Investor: Ministry of Education, Youth and Sports of the CR
LM2015051, research and development project
Name: Centrum pro výzkum toxických látek v prostředí (Acronym: RECETOX RI)
Investor: Ministry of Education, Youth and Sports of the CR
LQ1601, research and development project
Name: CEITEC 2020 (Acronym: CEITEC2020)
Investor: Ministry of Education, Youth and Sports of the CR