Nickel sulfide sensitized TiO2 nanotubes system as photo-anode: Will this system active under visible light and why?

E. Addawiyah, Jarnuzi Gunlazuardi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This work is dedicated to enhance the photo catalytic activity of the modified 2 nanotube under visible light exposure. The narrow band gap of semiconductor such as NiS can be incorporated onto TiO2 nanotube (NiS/TiO2-NT) to obtain a composite which may active under visible light. The TiO2 nanotube was self-prepared by electro-oxidation of titanium plate in electrolyte containing ethylene glycol, NH4F, and water. Meanwhile, the incorporation of NiS onto TiO2 film was prepared by successive ionic layer absorption and reaction (SILAR) method, in which nickel(II) ion and sulfide ion were used as the precursor of NiS, to obtain the NiS/TiO2-NT film system. The obtained NiS/TiO2-NT films were characterized by UVDRS, FTIR, SEM, XRD, and photo-electro-chemical work station. The resultsindicated that the peak of absorption spectra of NiS/TiO2-NT fall within thevisible light region, which the final band gap was 2.85 eV; IR and XRD spectra were also revealed the characteristic peak of NiS/TiO2-NT system. Photo-electrochemical investigation revealed that the evolution of photocurrent under visible light (100 W wolfram lamp), as much as 0.26 mA/cm2 typically can be easily observed.

Original languageEnglish
Title of host publicationProceedings of the 3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017
EditorsRatna Yuniati, Terry Mart, Ivandini T. Anggraningrum, Djoko Triyono, Kiki A. Sugeng
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735417410
DOIs
Publication statusPublished - 22 Oct 2018
Event3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017 - Bali, Indonesia
Duration: 26 Jul 201727 Jul 2017

Publication series

NameAIP Conference Proceedings
Volume2023
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017
CountryIndonesia
CityBali
Period26/07/1727/07/17

Keywords

  • NiS/TiO-NT
  • SILAR.
  • photo-electrode

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