The use of titanium dioxide nanotubes as photoanodes for chloride oxidation

Con Boyle, Nathan Skillen, Nimal Gunaratne, Preetam Sharma, John Byrne, Peter Robertson

Research output: Contribution to journalArticle

Abstract

In recent years, significant attention has been given to the development of photoelectrochemical materials capable of producing high current densities under illumination for a range of applications. Titanium dioxide nanotubes (TiNTs) have emerged as a favourable nanomaterial due to a reduced rate of recombination coupled with the ability to generate stable and high photocurrents. To date however, there has been no reports on the use of TiNTs for the photoelectrochemical production of chlorine, a powerful disinfectant, under UV light. The work reported here describes the construction of TiNTs for chlorine generation under low power UV-Light Emitting Diode (UV-LED) irradiation. Linear sweep voltammetry has shown TiNTs to be active for chlorine generation, achieving an average faradaic yield of ~60 %, which was found to be significantly higher when compared to sol-gel electrodes (~40 %). Furthermore, the impact of electrode conditioning was evaluated, demonstrating improved performance after removing surface contaminants.
Original languageEnglish
JournalMaterials Science in Semiconductor Processing
DOIs
Publication statusPublished - 24 Jan 2020

Fingerprint

titanium oxides
Titanium dioxide
Nanotubes
Chlorides
Chlorine
nanotubes
chlorides
chlorine
Oxidation
oxidation
antiseptics
Disinfectants
Electrodes
electrodes
Voltammetry
conditioning
Photocurrents
Nanostructured materials
Ultraviolet radiation
Sol-gels

Keywords

  • Titanium dioxide nanotubes
  • sol-gel
  • photoelectrochemistry
  • UV LED
  • chlorine

Cite this

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title = "The use of titanium dioxide nanotubes as photoanodes for chloride oxidation",
abstract = "In recent years, significant attention has been given to the development of photoelectrochemical materials capable of producing high current densities under illumination for a range of applications. Titanium dioxide nanotubes (TiNTs) have emerged as a favourable nanomaterial due to a reduced rate of recombination coupled with the ability to generate stable and high photocurrents. To date however, there has been no reports on the use of TiNTs for the photoelectrochemical production of chlorine, a powerful disinfectant, under UV light. The work reported here describes the construction of TiNTs for chlorine generation under low power UV-Light Emitting Diode (UV-LED) irradiation. Linear sweep voltammetry has shown TiNTs to be active for chlorine generation, achieving an average faradaic yield of ~60 {\%}, which was found to be significantly higher when compared to sol-gel electrodes (~40 {\%}). Furthermore, the impact of electrode conditioning was evaluated, demonstrating improved performance after removing surface contaminants.",
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year = "2020",
month = "1",
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The use of titanium dioxide nanotubes as photoanodes for chloride oxidation. / Boyle, Con; Skillen, Nathan; Gunaratne, Nimal; Sharma, Preetam; Byrne, John; Robertson, Peter.

In: Materials Science in Semiconductor Processing, 24.01.2020.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The use of titanium dioxide nanotubes as photoanodes for chloride oxidation

AU - Boyle, Con

AU - Skillen, Nathan

AU - Gunaratne, Nimal

AU - Sharma, Preetam

AU - Byrne, John

AU - Robertson, Peter

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Y1 - 2020/1/24

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