Optimization of hydrogen production over TiO2 supported copper and nickel oxides: effect of photoelectrochemical features

Low-cost solar hydrogen production through water splitting using photo-electrochemical (PEC) cell offers a clean and renewable source of energy. However, its low performance remains a primary concern. Solar hydrogen production of TiO2 supported copper and nickel oxides photoanod (Cu�Ni/TiO2) was s...

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Main Authors: Bashiri, R., Mohamed, N.M., Kait, C.F., Sufian, S.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.22183 /
Published: 2019
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85053679692&doi=10.1007%2fs10800-018-1256-5&partnerID=40&md5=62b005613e2256e4f7eb94eba1e03756
http://eprints.utp.edu.my/22183/
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spelling utp-eprints.221832019-02-28T05:16:01Z Optimization of hydrogen production over TiO2 supported copper and nickel oxides: effect of photoelectrochemical features Bashiri, R. Mohamed, N.M. Kait, C.F. Sufian, S. Low-cost solar hydrogen production through water splitting using photo-electrochemical (PEC) cell offers a clean and renewable source of energy. However, its low performance remains a primary concern. Solar hydrogen production of TiO2 supported copper and nickel oxides photoanod (Cu�Ni/TiO2) was significantly influenced by photoanode fabrication and reaction parameters. To maintain the optimum operating conditions of PEC cell for practical application, we systematically investigated the effect of sintering temperature, photoanode thickness, electrolyte concentration, and applied voltage on hydrogen production over 5 mol Cu�Ni/TiO2 and PEC characteristics, including charge carrier transfer resistance, photocurrent density, and flat band potential. Findings reveal that the optimized sintering temperature for hydrogen production was 400 °C due to low charge transfer resistance and more excited electrons at the electrode/electrolyte interface. The photocatalyst with the four layers of printed 5 mol Cu�Ni/TiO2 (thickness ~ 24.8 µm) improved the photocatalytic performance, highlighting the importance of the number of excited electrons and the surface area of the photocatalyst. Furthermore, applied voltage exerted the most significant effect on hydrogen production up to 24.9 mL at the optimum level of 3.4 V by minimizing the recombination rate of electron�hole pairs. The stability of the photoanode was tested under the optimum conditions for 4 days and the maximum accumulative hydrogen of 443.4 mL was produced over this highly stable photoanode. Graphical abstract: Figure not available: see fulltext.. © 2018, Springer Nature B.V. 2019 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85053679692&doi=10.1007%2fs10800-018-1256-5&partnerID=40&md5=62b005613e2256e4f7eb94eba1e03756 Bashiri, R. and Mohamed, N.M. and Kait, C.F. and Sufian, S. (2019) Optimization of hydrogen production over TiO2 supported copper and nickel oxides: effect of photoelectrochemical features. Journal of Applied Electrochemistry, 49 (1). pp. 27-38. http://eprints.utp.edu.my/22183/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Low-cost solar hydrogen production through water splitting using photo-electrochemical (PEC) cell offers a clean and renewable source of energy. However, its low performance remains a primary concern. Solar hydrogen production of TiO2 supported copper and nickel oxides photoanod (Cu�Ni/TiO2) was significantly influenced by photoanode fabrication and reaction parameters. To maintain the optimum operating conditions of PEC cell for practical application, we systematically investigated the effect of sintering temperature, photoanode thickness, electrolyte concentration, and applied voltage on hydrogen production over 5 mol Cu�Ni/TiO2 and PEC characteristics, including charge carrier transfer resistance, photocurrent density, and flat band potential. Findings reveal that the optimized sintering temperature for hydrogen production was 400 °C due to low charge transfer resistance and more excited electrons at the electrode/electrolyte interface. The photocatalyst with the four layers of printed 5 mol Cu�Ni/TiO2 (thickness ~ 24.8 µm) improved the photocatalytic performance, highlighting the importance of the number of excited electrons and the surface area of the photocatalyst. Furthermore, applied voltage exerted the most significant effect on hydrogen production up to 24.9 mL at the optimum level of 3.4 V by minimizing the recombination rate of electron�hole pairs. The stability of the photoanode was tested under the optimum conditions for 4 days and the maximum accumulative hydrogen of 443.4 mL was produced over this highly stable photoanode. Graphical abstract: Figure not available: see fulltext.. © 2018, Springer Nature B.V.
format Article
author Bashiri, R.
Mohamed, N.M.
Kait, C.F.
Sufian, S.
spellingShingle Bashiri, R.
Mohamed, N.M.
Kait, C.F.
Sufian, S.
Optimization of hydrogen production over TiO2 supported copper and nickel oxides: effect of photoelectrochemical features
author_sort Bashiri, R.
title Optimization of hydrogen production over TiO2 supported copper and nickel oxides: effect of photoelectrochemical features
title_short Optimization of hydrogen production over TiO2 supported copper and nickel oxides: effect of photoelectrochemical features
title_full Optimization of hydrogen production over TiO2 supported copper and nickel oxides: effect of photoelectrochemical features
title_fullStr Optimization of hydrogen production over TiO2 supported copper and nickel oxides: effect of photoelectrochemical features
title_full_unstemmed Optimization of hydrogen production over TiO2 supported copper and nickel oxides: effect of photoelectrochemical features
title_sort optimization of hydrogen production over tio2 supported copper and nickel oxides: effect of photoelectrochemical features
publishDate 2019
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85053679692&doi=10.1007%2fs10800-018-1256-5&partnerID=40&md5=62b005613e2256e4f7eb94eba1e03756
http://eprints.utp.edu.my/22183/
_version_ 1741196581407817728
score 11.62408

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