Effect of intermediate layer in photocurrent improvement of three-layer photoanodes using WO3 and Fe2O3

Soraya Hosseini, Ehsan Eftekhari, Salman Masoudi Soltani, Amir Memar, Farahnaz Eghbali Babadi, Bahador Dastorian Jamnani, Mohd Halim Shah Ismail, Lorna Effery Minggu

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Sol-gel method was applied to synthesize WO3/Fe 2O3 three-layer films in order to improve the generated photocurrent under UV-vis light irradiation. The films were deposited on FTO glass substrates through doctor bladding method. The samples were then calcined at 500 C. The photocurrents of the synthesized photoanodes were evaluated by measuring the electric current and voltage under UV-vis light at room temperature. Scanning electron microscopy (SEM) revealed unique surface morphologies owing to the presence of the intermediate layers. At an applied potential of 1300 mV, the WO3\Fe2O3\WO 3 and Fe2O3\WO3\Fe2O 3 photoanodes exhibited photocurrent densities up to 0.1 mA/cm 2 and 0.6 mA/cm2, respectively. It was found that porous films with easy accessibility to the inner surface reveal high photocurrents. The intermediate layer of WO3 demonstrated higher values of photocurrent due to roughness enhancement on the upper surface with columnar tree-growth particles. However, a compact state was observed on the cross section of Fe2O3 growth. A comparison was also drawn between the two and three-layer photoanodes using Fe2O3 andWO3. The films were characterized by XRD, SEM/EDX, and UV-vis irradiation to determine the photocurrent densities.

Original languageEnglish
Pages (from-to)1309-1314
Number of pages6
JournalJournal of Environmental Chemical Engineering
Volume1
Issue number4
DOIs
Publication statusPublished - Dec 2013

Fingerprint

Photocurrents
irradiation
scanning electron microscopy
Ultraviolet radiation
Irradiation
accessibility
roughness
Scanning electron microscopy
gel
cross section
glass
X-ray diffraction
Electric currents
substrate
Sol-gel process
Surface morphology
effect
Energy dispersive spectroscopy
Surface roughness
Glass

Keywords

  • FeO
  • Multi-layer
  • Photoanode
  • WO

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Process Chemistry and Technology
  • Pollution
  • Waste Management and Disposal

Cite this

Effect of intermediate layer in photocurrent improvement of three-layer photoanodes using WO3 and Fe2O3 . / Hosseini, Soraya; Eftekhari, Ehsan; Masoudi Soltani, Salman; Memar, Amir; Eghbali Babadi, Farahnaz; Dastorian Jamnani, Bahador; Ismail, Mohd Halim Shah; Effery Minggu, Lorna.

In: Journal of Environmental Chemical Engineering, Vol. 1, No. 4, 12.2013, p. 1309-1314.

Research output: Contribution to journalArticle

Hosseini, S, Eftekhari, E, Masoudi Soltani, S, Memar, A, Eghbali Babadi, F, Dastorian Jamnani, B, Ismail, MHS & Effery Minggu, L 2013, 'Effect of intermediate layer in photocurrent improvement of three-layer photoanodes using WO3 and Fe2O3 ', Journal of Environmental Chemical Engineering, vol. 1, no. 4, pp. 1309-1314. https://doi.org/10.1016/j.jece.2013.09.023
Hosseini, Soraya ; Eftekhari, Ehsan ; Masoudi Soltani, Salman ; Memar, Amir ; Eghbali Babadi, Farahnaz ; Dastorian Jamnani, Bahador ; Ismail, Mohd Halim Shah ; Effery Minggu, Lorna. / Effect of intermediate layer in photocurrent improvement of three-layer photoanodes using WO3 and Fe2O3 In: Journal of Environmental Chemical Engineering. 2013 ; Vol. 1, No. 4. pp. 1309-1314.
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