Publication detail

Niobium-doped TiS2: Formation of TiS3 nanobelts and their effects in enzymatic biosensors

ROHAIZAD, N. MAYORGA-MARTINEZ, C. SOFER, Z. WEBSTER, R. PUMERA, M.

Original Title

Niobium-doped TiS2: Formation of TiS3 nanobelts and their effects in enzymatic biosensors

Type

journal article in Web of Science

Language

English

Original Abstract

There is an assortment of layered transition metal dichalcogenides (TMDs), about 40 reported compounds, each with its unique polymorph and properties. Group 4 TMD, titanium disulfide (TiS2), possess high electronic conductivity and light weight amongst other attractive features. In consideration for electrochemical and thermoelectrical applications, doping is a promising approach to enhance its practicability. The introduction of foreign atoms or compositional variance may improve existing properties or grant access to new ones. Moving away from the more intensively studied and successfully doped group 6 MoS2 and WS2, TiS2 is doped with varying levels of niobium (Nb) via controlled heating of stoichiometric amounts to yield Ti1-xNbxS2 where x = 0.05, 0.1, 0.2. Structural effects are discussed together with two doping parameters, nature and concentration of dopant. Characterisation data reveal retention of 1T-phase polymorph despite formation of TiS3 nanobelts upon doping. Fundamental electrochemical properties such as heterogenous electron transfer rates and its charge transfer resistance are compared amongst the materials of interest. A selective and sensitive 2nd generation electrochemical biosensor is prepared using Ti0.95Nb0.05S2/GOx/GTA since it is the most superior material in glucose detection.

Keywords

Transition metal dichalcogenides; Layered; Metal doping; Electrochemistry; Second generation glucose biosensor

Authors

ROHAIZAD, N.; MAYORGA-MARTINEZ, C.; SOFER, Z.; WEBSTER, R.; PUMERA, M.

Released

1. 5. 2020

Publisher

ELSEVIER ADVANCED TECHNOLOGY

Location

OXFORD

ISBN

0956-5663

Periodical

BIOSENSORS & BIOELECTRONICS

Year of study

155

Number

1

State

Kingdom of the Netherlands

Pages from

1

Pages to

9

Pages count

9

URL

https://www.sciencedirect.com/science/article/pii/S0956566320301111?via%3Dihub

BibTex

@article{BUT163851,
  author="Nasuha {Rohaizad} and Carmen C. {Mayorga-Martinez} and Zdeněk {Sofer} and Richard D. {Webster} and Martin {Pumera}",
  title="Niobium-doped TiS2: Formation of TiS3 nanobelts and their effects in enzymatic biosensors",
  journal="BIOSENSORS & BIOELECTRONICS",
  year="2020",
  volume="155",
  number="1",
  pages="1--9",
  doi="10.1016/j.bios.2020.112114",
  issn="0956-5663",
  url="https://www.sciencedirect.com/science/article/pii/S0956566320301111?via%3Dihub"
}