Hybrid photocatalytic H2 evolution systems containing xanthene dyes and inorganic nickel based catalysts

The application of nickel based earth abundant inorganic solids as catalysts in xanthene dye sensitized systems was evaluated for photocatalytic H2 production from water. The introduction of heterogeneous nanoparticles into molecular systems as catalysts is the conceptual begin to broaden the constr...

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Main Authors: Zhang, Wei, Xu, Rong
Other Authors: School of Chemical and Biomedical Engineering
Format: Article
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/96905
http://hdl.handle.net/10220/11561
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-969052020-03-07T11:35:33Z Hybrid photocatalytic H2 evolution systems containing xanthene dyes and inorganic nickel based catalysts Zhang, Wei Xu, Rong School of Chemical and Biomedical Engineering The application of nickel based earth abundant inorganic solids as catalysts in xanthene dye sensitized systems was evaluated for photocatalytic H2 production from water. The introduction of heterogeneous nanoparticles into molecular systems as catalysts is the conceptual begin to broaden the construction of photocatalytic H2 production systems. A series of Ni based inorganic nanoparticles, including Ni metal, NiO, NiS and NiSe, are capable of producing H2 from triethanolamine sacrificial aqueous solution when photosensitized by xanthene dyes. NiS catalysts synthesized from different methods were also evaluated for H2 production performance. The best H2 production result is obtained with the use of Erythrosin Y as the photosensitizer and NiS synthesized in ethylene glycol as the catalyst. This system is active even under photons with wavelengths longer than 520 nm with a H2 production of 2.5 mmol within 26 h of irradiation from a 300 W Xenon lamp. Meanwhile, it can generate over 4.2 mmol of H2 within 16 h of irradiation with a 440 nm long-pass cut-off filter. Within the visible light range we examined, the highest quantum efficiency is around 15% at 520 nm. The high activity of NiS could be contributed by its high electrochemical activity, metallic nature, unsaturated Ni environment and suitable Fermi energy level. These hybrid systems consist of earth abundant elements, and the catalyst is photostable and recyclable compared to homogeneous metal complex catalyst. 2013-07-16T06:20:48Z 2019-12-06T19:36:33Z 2013-07-16T06:20:48Z 2019-12-06T19:36:33Z 2012 2012 Journal Article Zhang, W., & Xu, R. (2012). Hybrid photocatalytic H2 evolution systems containing xanthene dyes and inorganic nickel based catalysts. International Journal of Hydrogen Energy, 37(23), 17899-17909. 0360-3199 https://hdl.handle.net/10356/96905 http://hdl.handle.net/10220/11561 10.1016/j.ijhydene.2012.08.150 en International journal of hydrogen energy © 2012 Hydrogen Energy Publications, LLC.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
description The application of nickel based earth abundant inorganic solids as catalysts in xanthene dye sensitized systems was evaluated for photocatalytic H2 production from water. The introduction of heterogeneous nanoparticles into molecular systems as catalysts is the conceptual begin to broaden the construction of photocatalytic H2 production systems. A series of Ni based inorganic nanoparticles, including Ni metal, NiO, NiS and NiSe, are capable of producing H2 from triethanolamine sacrificial aqueous solution when photosensitized by xanthene dyes. NiS catalysts synthesized from different methods were also evaluated for H2 production performance. The best H2 production result is obtained with the use of Erythrosin Y as the photosensitizer and NiS synthesized in ethylene glycol as the catalyst. This system is active even under photons with wavelengths longer than 520 nm with a H2 production of 2.5 mmol within 26 h of irradiation from a 300 W Xenon lamp. Meanwhile, it can generate over 4.2 mmol of H2 within 16 h of irradiation with a 440 nm long-pass cut-off filter. Within the visible light range we examined, the highest quantum efficiency is around 15% at 520 nm. The high activity of NiS could be contributed by its high electrochemical activity, metallic nature, unsaturated Ni environment and suitable Fermi energy level. These hybrid systems consist of earth abundant elements, and the catalyst is photostable and recyclable compared to homogeneous metal complex catalyst.
author2 School of Chemical and Biomedical Engineering
author_facet School of Chemical and Biomedical Engineering
Zhang, Wei
Xu, Rong
format Article
author Zhang, Wei
Xu, Rong
spellingShingle Zhang, Wei
Xu, Rong
Hybrid photocatalytic H2 evolution systems containing xanthene dyes and inorganic nickel based catalysts
author_sort Zhang, Wei
title Hybrid photocatalytic H2 evolution systems containing xanthene dyes and inorganic nickel based catalysts
title_short Hybrid photocatalytic H2 evolution systems containing xanthene dyes and inorganic nickel based catalysts
title_full Hybrid photocatalytic H2 evolution systems containing xanthene dyes and inorganic nickel based catalysts
title_fullStr Hybrid photocatalytic H2 evolution systems containing xanthene dyes and inorganic nickel based catalysts
title_full_unstemmed Hybrid photocatalytic H2 evolution systems containing xanthene dyes and inorganic nickel based catalysts
title_sort hybrid photocatalytic h2 evolution systems containing xanthene dyes and inorganic nickel based catalysts
publishDate 2013
url https://hdl.handle.net/10356/96905
http://hdl.handle.net/10220/11561
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