Implementation of Ag nanoparticle incorporated WO3 thin film photoanode for hydrogen production

N. Naseri, Hyoungil Kim, W. Choi, A. Z. Moshfegh

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

WO3 thin film photoanodes containing different concentrations of Ag nanoparticles were synthesized by solegel method. Based on UV-visible spectra, presence of a surface plasmon resonance peak at 470 nm of wavelength indicated formation of silver nanoparticles in the WO3 films. According to atomic force microscopy (AFM) analysis, the highest value for surface roughness and the effective surface ratio was observed for the sample containing 2 mol% of Ag. X-ray diffraction (XRD) patterns revealed that WO 3 nanocrystalline structure was formed in the monoclinic phase with the average size of about 18.2 nm while Ag nanocrystals were determined in cubic phase. X-ray photoelectron spectroscopy (XPS) showed that Ag exists in a combination of metal/oxide states on the surface. Photoresponse investigation of the synthesized films indicated that the highest photocurrent was obtained for the sample containing 2 mol% Ag with the maximum incident photon to current efficiency (IPCE) of about 20% at 360 nm wavelength. Moreover, measuring the amount of hydrogen produced during water splitting reactions verified that the highest hydrogen production rate (~3 μmol/h) was obtained for the sample with 2 mol% Ag.

Original languageEnglish
Pages (from-to)2117-2125
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume38
Issue number5
DOIs
Publication statusPublished - 2013 Feb 19

Fingerprint

hydrogen production
Hydrogen production
Nanoparticles
Thin films
Wavelength
nanoparticles
Surface plasmon resonance
thin films
Photocurrents
Nanocrystals
Diffraction patterns
Atomic force microscopy
nanostructure (characteristics)
Silver
water splitting
Photons
X ray photoelectron spectroscopy
Surface roughness
visible spectrum
surface plasmon resonance

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

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abstract = "WO3 thin film photoanodes containing different concentrations of Ag nanoparticles were synthesized by solegel method. Based on UV-visible spectra, presence of a surface plasmon resonance peak at 470 nm of wavelength indicated formation of silver nanoparticles in the WO3 films. According to atomic force microscopy (AFM) analysis, the highest value for surface roughness and the effective surface ratio was observed for the sample containing 2 mol{\%} of Ag. X-ray diffraction (XRD) patterns revealed that WO 3 nanocrystalline structure was formed in the monoclinic phase with the average size of about 18.2 nm while Ag nanocrystals were determined in cubic phase. X-ray photoelectron spectroscopy (XPS) showed that Ag exists in a combination of metal/oxide states on the surface. Photoresponse investigation of the synthesized films indicated that the highest photocurrent was obtained for the sample containing 2 mol{\%} Ag with the maximum incident photon to current efficiency (IPCE) of about 20{\%} at 360 nm wavelength. Moreover, measuring the amount of hydrogen produced during water splitting reactions verified that the highest hydrogen production rate (~3 μmol/h) was obtained for the sample with 2 mol{\%} Ag.",
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Implementation of Ag nanoparticle incorporated WO3 thin film photoanode for hydrogen production. / Naseri, N.; Kim, Hyoungil; Choi, W.; Moshfegh, A. Z.

In: International Journal of Hydrogen Energy, Vol. 38, No. 5, 19.02.2013, p. 2117-2125.

Research output: Contribution to journalArticle

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