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

N. Naseri; H. Kim; W. Choi; A. Z. Moshfegh

doi:10.1016/j.ijhydene.2012.11.132

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

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

Department of Civil and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

27 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 language	English
Pages (from-to)	2117-2125
Number of pages	9
Journal	International Journal of Hydrogen Energy
Volume	38
Issue number	5
DOIs	https://doi.org/10.1016/j.ijhydene.2012.11.132
Publication status	Published - 2013 Feb 19

Bibliographical note

Funding Information:
The authors would like to thank Research and Technology Council of Sharif University of Technology and Iran National Science Foundation (INSF) for financial support. Useful assistance of Mr. S Rafiee for XPS measurements and Mrs. Vaseghinia for AFM images is greatly acknowledged.

All Science Journal Classification (ASJC) codes

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

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ijhydene.2012.11.132

Cite this

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title = "Implementation of Ag nanoparticle incorporated WO3 thin film photoanode for hydrogen production",

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.",

author = "N. Naseri and H. Kim and W. Choi and Moshfegh, {A. Z.}",

note = "Funding Information: The authors would like to thank Research and Technology Council of Sharif University of Technology and Iran National Science Foundation (INSF) for financial support. Useful assistance of Mr. S Rafiee for XPS measurements and Mrs. Vaseghinia for AFM images is greatly acknowledged. ",

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AU - Naseri, N.

AU - Kim, H.

AU - Choi, W.

AU - Moshfegh, A. Z.

N1 - Funding Information: The authors would like to thank Research and Technology Council of Sharif University of Technology and Iran National Science Foundation (INSF) for financial support. Useful assistance of Mr. S Rafiee for XPS measurements and Mrs. Vaseghinia for AFM images is greatly acknowledged.

PY - 2013/2/19

Y1 - 2013/2/19

N2 - 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.

AB - 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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