Electrochemical performance of Ti3C2Tx MXene in aqueous media: towards ultrasensitive H2O2 sensing

Lenka Lorencova; Tomas Bertok; Erika Dosekova; Alena Holazova; Darina Paprckova; Alica Vikartovska; Vlasta Sasinkova; Jaroslav Filip; Peter Kasak; Monika Jerigova; Dusan Velic; Khaled A. Mahmoud; Jan Tkac

doi:10.1016/j.electacta.2017.03.073

Electrochemical performance of Ti₃C₂T_x MXene in aqueous media: towards ultrasensitive H₂O₂ sensing

Lenka Lorencova, Tomas Bertok, Erika Dosekova, Alena Holazova, Darina Paprckova, Alica Vikartovska, Vlasta Sasinkova, Jaroslav Filip, Peter Kasak^*, Monika Jerigova, Dusan Velic, Khaled A. Mahmoud, Jan Tkac

^*Corresponding author for this work

QEERI - Environment & Sustainability Center

Research output: Contribution to journal › Article › peer-review

261 Citations (Scopus)

Abstract

An extensive characterization of pristine and oxidized Ti₃C₂T_x (T: [dbnd]O, –OH, –F) MXene showed that exposure of MXene to an anodic potential in the aqueous solution oxidizes the nanomaterial forming TiO₂ layer or TiO₂ domains with subsequent TiO₂ dissolution by F⁻ ions, making the resulting nanomaterial less electrochemically active compared to the pristine Ti₃C₂T_x. The Ti₃C₂T_x could be thus applied for electrochemical reactions in a cathodic potential window i.e. for ultrasensitive detection of H₂O₂ down to nM level with a response time of ∼10 s. The manuscript also shows electrochemical behavior of Ti₃C₂T_x modified electrode towards oxidation of NADH and towards oxygen reduction reactions.

Original language	English
Pages (from-to)	471-479
Number of pages	9
Journal	Electrochimica Acta
Volume	235
DOIs	https://doi.org/10.1016/j.electacta.2017.03.073
Publication status	Published - 1 May 2017

Keywords

HO sensing
NADH oxidation
TiCT
oxygen reduction reactions

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10.1016/j.electacta.2017.03.073

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@article{4d26a54ecfed496e8e0eebf7600bfb81,

title = "Electrochemical performance of Ti3C2Tx MXene in aqueous media: towards ultrasensitive H2O2 sensing",

abstract = "An extensive characterization of pristine and oxidized Ti3C2Tx (T: [dbnd]O, –OH, –F) MXene showed that exposure of MXene to an anodic potential in the aqueous solution oxidizes the nanomaterial forming TiO2 layer or TiO2 domains with subsequent TiO2 dissolution by F− ions, making the resulting nanomaterial less electrochemically active compared to the pristine Ti3C2Tx. The Ti3C2Tx could be thus applied for electrochemical reactions in a cathodic potential window i.e. for ultrasensitive detection of H2O2 down to nM level with a response time of ∼10 s. The manuscript also shows electrochemical behavior of Ti3C2Tx modified electrode towards oxidation of NADH and towards oxygen reduction reactions.",

keywords = "HO sensing, NADH oxidation, TiCT, oxygen reduction reactions",

author = "Lenka Lorencova and Tomas Bertok and Erika Dosekova and Alena Holazova and Darina Paprckova and Alica Vikartovska and Vlasta Sasinkova and Jaroslav Filip and Peter Kasak and Monika Jerigova and Dusan Velic and Mahmoud, {Khaled A.} and Jan Tkac",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

month = may,

day = "1",

doi = "10.1016/j.electacta.2017.03.073",

language = "English",

volume = "235",

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journal = "Electrochimica Acta",

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TY - JOUR

T1 - Electrochemical performance of Ti3C2Tx MXene in aqueous media

T2 - towards ultrasensitive H2O2 sensing

AU - Lorencova, Lenka

AU - Bertok, Tomas

AU - Dosekova, Erika

AU - Holazova, Alena

AU - Paprckova, Darina

AU - Vikartovska, Alica

AU - Sasinkova, Vlasta

AU - Filip, Jaroslav

AU - Kasak, Peter

AU - Jerigova, Monika

AU - Velic, Dusan

AU - Mahmoud, Khaled A.

AU - Tkac, Jan

PY - 2017/5/1

Y1 - 2017/5/1

N2 - An extensive characterization of pristine and oxidized Ti3C2Tx (T: [dbnd]O, –OH, –F) MXene showed that exposure of MXene to an anodic potential in the aqueous solution oxidizes the nanomaterial forming TiO2 layer or TiO2 domains with subsequent TiO2 dissolution by F− ions, making the resulting nanomaterial less electrochemically active compared to the pristine Ti3C2Tx. The Ti3C2Tx could be thus applied for electrochemical reactions in a cathodic potential window i.e. for ultrasensitive detection of H2O2 down to nM level with a response time of ∼10 s. The manuscript also shows electrochemical behavior of Ti3C2Tx modified electrode towards oxidation of NADH and towards oxygen reduction reactions.

AB - An extensive characterization of pristine and oxidized Ti3C2Tx (T: [dbnd]O, –OH, –F) MXene showed that exposure of MXene to an anodic potential in the aqueous solution oxidizes the nanomaterial forming TiO2 layer or TiO2 domains with subsequent TiO2 dissolution by F− ions, making the resulting nanomaterial less electrochemically active compared to the pristine Ti3C2Tx. The Ti3C2Tx could be thus applied for electrochemical reactions in a cathodic potential window i.e. for ultrasensitive detection of H2O2 down to nM level with a response time of ∼10 s. The manuscript also shows electrochemical behavior of Ti3C2Tx modified electrode towards oxidation of NADH and towards oxygen reduction reactions.

KW - HO sensing

KW - NADH oxidation

KW - TiCT

KW - oxygen reduction reactions

UR - http://www.scopus.com/inward/record.url?scp=85016044656&partnerID=8YFLogxK

U2 - 10.1016/j.electacta.2017.03.073

DO - 10.1016/j.electacta.2017.03.073

M3 - Article

AN - SCOPUS:85016044656

SN - 0013-4686

VL - 235

SP - 471

EP - 479

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Electrochemical performance of Ti₃C₂T_x MXene in aqueous media: towards ultrasensitive H₂O₂ sensing

Abstract

Keywords

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