Fabrication of Ag-ZnO composite thin films for plasmonic enhanced water splitting

Research on plasmonic photoactive materials has resulted in some significant advancements in UV-Vis photo-active catalytic reactions. In this study, pristine ZnO and Ag-ZnO thin films were deposited onto fluorine doped tin oxide (FTO) coated glass substrate from a newly synthesized zinc molecular pr...

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Main Authors: Munawar, Khadija, Mansoor, Muhammad Adil, Olmstead, Marilyn M., Zaharinie, Tuan, Zubir, Mohd Nashrul Mohd, Haniffa, Mohamad, Basirun, Wan Jeffrey, Mazhar, Muhammad
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Published: Elsevier 2020
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Online Access:http://eprints.um.edu.my/36258/
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spelling my.um.eprints.362582023-11-29T11:07:12Z http://eprints.um.edu.my/36258/ Fabrication of Ag-ZnO composite thin films for plasmonic enhanced water splitting Munawar, Khadija Mansoor, Muhammad Adil Olmstead, Marilyn M. Zaharinie, Tuan Zubir, Mohd Nashrul Mohd Haniffa, Mohamad Basirun, Wan Jeffrey Mazhar, Muhammad Q Science (General) QD Chemistry Research on plasmonic photoactive materials has resulted in some significant advancements in UV-Vis photo-active catalytic reactions. In this study, pristine ZnO and Ag-ZnO thin films were deposited onto fluorine doped tin oxide (FTO) coated glass substrate from a newly synthesized zinc molecular precursor, {Zn-5(TFA)/(OH)(2)(H2O)(4)(OAc)}n center dot 2(C4H6O2) TEA = trifluoroacetate, OAc acetate], and its homogenous solution with Ag(CH3COO), respectively, via the aerosol assisted chemical vapor deposition (AACVD) technique. The precursor was analyzed by microanalysis, melting point, proton nuclear magnetic resonance (H-1 NMR), Fourier transformed infra-red (FT-IR), thermogravimetry (TG) and single crystal analysis. Powder X-ray diffraction (PXRD), Raman spectroscopy, field emission scanning electron microscopy (FESEM) coupled with energy dispersive X-ray (EDX), UV-Vis spectroscopic and photoluminescence (PL) analyses were carried out to investigate the phase purity, structural morphology, composition and optical properties of the as-synthesized thin films. Linear scan voltammetry (LSV) and electrochemical impedance spectroscopy (EIS) confirmed that the photo-electrochemical performance of Ag-ZnO for water splitting was much improved compared to ZnO. These results confirm that Ag is an efficient surface plasmon resonance photosensitizer which mediates the interfacial charge transfer process, thus extending the light response of pristine ZnO into the visible region. Elsevier 2020-11 Article PeerReviewed Munawar, Khadija and Mansoor, Muhammad Adil and Olmstead, Marilyn M. and Zaharinie, Tuan and Zubir, Mohd Nashrul Mohd and Haniffa, Mohamad and Basirun, Wan Jeffrey and Mazhar, Muhammad (2020) Fabrication of Ag-ZnO composite thin films for plasmonic enhanced water splitting. Materials Chemistry and Physics, 255. ISSN 0254-0584, DOI https://doi.org/10.1016/j.matchemphys.2020.123220 <https://doi.org/10.1016/j.matchemphys.2020.123220>. 10.1016/j.matchemphys.2020.123220
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
QD Chemistry
spellingShingle Q Science (General)
QD Chemistry
Munawar, Khadija
Mansoor, Muhammad Adil
Olmstead, Marilyn M.
Zaharinie, Tuan
Zubir, Mohd Nashrul Mohd
Haniffa, Mohamad
Basirun, Wan Jeffrey
Mazhar, Muhammad
Fabrication of Ag-ZnO composite thin films for plasmonic enhanced water splitting
description Research on plasmonic photoactive materials has resulted in some significant advancements in UV-Vis photo-active catalytic reactions. In this study, pristine ZnO and Ag-ZnO thin films were deposited onto fluorine doped tin oxide (FTO) coated glass substrate from a newly synthesized zinc molecular precursor, {Zn-5(TFA)/(OH)(2)(H2O)(4)(OAc)}n center dot 2(C4H6O2) TEA = trifluoroacetate, OAc acetate], and its homogenous solution with Ag(CH3COO), respectively, via the aerosol assisted chemical vapor deposition (AACVD) technique. The precursor was analyzed by microanalysis, melting point, proton nuclear magnetic resonance (H-1 NMR), Fourier transformed infra-red (FT-IR), thermogravimetry (TG) and single crystal analysis. Powder X-ray diffraction (PXRD), Raman spectroscopy, field emission scanning electron microscopy (FESEM) coupled with energy dispersive X-ray (EDX), UV-Vis spectroscopic and photoluminescence (PL) analyses were carried out to investigate the phase purity, structural morphology, composition and optical properties of the as-synthesized thin films. Linear scan voltammetry (LSV) and electrochemical impedance spectroscopy (EIS) confirmed that the photo-electrochemical performance of Ag-ZnO for water splitting was much improved compared to ZnO. These results confirm that Ag is an efficient surface plasmon resonance photosensitizer which mediates the interfacial charge transfer process, thus extending the light response of pristine ZnO into the visible region.
format Article
author Munawar, Khadija
Mansoor, Muhammad Adil
Olmstead, Marilyn M.
Zaharinie, Tuan
Zubir, Mohd Nashrul Mohd
Haniffa, Mohamad
Basirun, Wan Jeffrey
Mazhar, Muhammad
author_facet Munawar, Khadija
Mansoor, Muhammad Adil
Olmstead, Marilyn M.
Zaharinie, Tuan
Zubir, Mohd Nashrul Mohd
Haniffa, Mohamad
Basirun, Wan Jeffrey
Mazhar, Muhammad
author_sort Munawar, Khadija
title Fabrication of Ag-ZnO composite thin films for plasmonic enhanced water splitting
title_short Fabrication of Ag-ZnO composite thin films for plasmonic enhanced water splitting
title_full Fabrication of Ag-ZnO composite thin films for plasmonic enhanced water splitting
title_fullStr Fabrication of Ag-ZnO composite thin films for plasmonic enhanced water splitting
title_full_unstemmed Fabrication of Ag-ZnO composite thin films for plasmonic enhanced water splitting
title_sort fabrication of ag-zno composite thin films for plasmonic enhanced water splitting
publisher Elsevier
publishDate 2020
url http://eprints.um.edu.my/36258/
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