Optimization and an insightful properties—Activity study of electrospun TiO2/CuO composite nanofibers for efficient photocatalytic H2 generation

Optimization of electrospun TiO2/CuO composite nanofibers shows that TiO2/CuO composite nanofibers with 6 mol.% Cu, calcined at 450 °C for 45 min, exhibited the highest H2 generation from 10% (v/v) methanol aqueous solution. The significance of balance and synergy among the essential physicochemical...

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Main Authors: Lee, Siew Siang, Bai, Hongwei, Liu, Zhaoyang, Sun, Darren Delai
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2013
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Online Access:https://hdl.handle.net/10356/99794
http://hdl.handle.net/10220/17798
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-997942020-03-07T11:43:46Z Optimization and an insightful properties—Activity study of electrospun TiO2/CuO composite nanofibers for efficient photocatalytic H2 generation Lee, Siew Siang Bai, Hongwei Liu, Zhaoyang Sun, Darren Delai School of Civil and Environmental Engineering DRNTU::Engineering::Environmental engineering Optimization of electrospun TiO2/CuO composite nanofibers shows that TiO2/CuO composite nanofibers with 6 mol.% Cu, calcined at 450 °C for 45 min, exhibited the highest H2 generation from 10% (v/v) methanol aqueous solution. The significance of balance and synergy among the essential physicochemical properties such as morphology, porosity, specific surface area, degree of crystallinity, crystal size, as well as elemental states on the photocatalytic H2 generation of electrospun TiO2/CuO composite nanofibers was further revealed by means of varying the synthesis calcinations temperatures. Calcinations at temperature above and below 450 °C showed negative effect on the H2 generation. This was ascribed to the temperature effect on transformation of crystalline phase, crystal growth, mesoporosity formation, and Cu valence state which has thus adversely affected the synergy among the physicochemical properties governing the photocatalytic activity of TiO2/CuO composite nanofibers. Good stability with negligible Cu leaching and reusability were also attained with the composite nanofibers. This study serves as a significant advancement platform to designing and fabricating high efficient and stable TiO2/CuO composite nanofibers via facile electrospinning thus promoting its application potential as an economical photocatalyst for production of clean energy. NRF (Natl Research Foundation, S’pore) Accepted version 2013-11-19T07:10:17Z 2019-12-06T20:11:36Z 2013-11-19T07:10:17Z 2019-12-06T20:11:36Z 2013 2013 Journal Article Lee, S. S., Bai, H., Liu, Z., & Sun, D. D. (2013). Optimization and an insightful properties—Activity study of electrospun TiO2/CuO composite nanofibers for efficient photocatalytic H2 generation. Applied Catalysis B: Environmental, 140-141, 68-81. 0926-3373 https://hdl.handle.net/10356/99794 http://hdl.handle.net/10220/17798 10.1016/j.apcatb.2013.03.033 en Applied catalysis B : environmental © 2013 Elsevier B.V. This is the author created version of a work that has been peer reviewed and accepted for publication by Applied Catalysis B: Environmental, Elsevier B.V. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: http://dx.doi.org/10.1016/j.apcatb.2013.03.033 48 p. application/pdf application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Environmental engineering
spellingShingle DRNTU::Engineering::Environmental engineering
Lee, Siew Siang
Bai, Hongwei
Liu, Zhaoyang
Sun, Darren Delai
Optimization and an insightful properties—Activity study of electrospun TiO2/CuO composite nanofibers for efficient photocatalytic H2 generation
description Optimization of electrospun TiO2/CuO composite nanofibers shows that TiO2/CuO composite nanofibers with 6 mol.% Cu, calcined at 450 °C for 45 min, exhibited the highest H2 generation from 10% (v/v) methanol aqueous solution. The significance of balance and synergy among the essential physicochemical properties such as morphology, porosity, specific surface area, degree of crystallinity, crystal size, as well as elemental states on the photocatalytic H2 generation of electrospun TiO2/CuO composite nanofibers was further revealed by means of varying the synthesis calcinations temperatures. Calcinations at temperature above and below 450 °C showed negative effect on the H2 generation. This was ascribed to the temperature effect on transformation of crystalline phase, crystal growth, mesoporosity formation, and Cu valence state which has thus adversely affected the synergy among the physicochemical properties governing the photocatalytic activity of TiO2/CuO composite nanofibers. Good stability with negligible Cu leaching and reusability were also attained with the composite nanofibers. This study serves as a significant advancement platform to designing and fabricating high efficient and stable TiO2/CuO composite nanofibers via facile electrospinning thus promoting its application potential as an economical photocatalyst for production of clean energy.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Lee, Siew Siang
Bai, Hongwei
Liu, Zhaoyang
Sun, Darren Delai
format Article
author Lee, Siew Siang
Bai, Hongwei
Liu, Zhaoyang
Sun, Darren Delai
author_sort Lee, Siew Siang
title Optimization and an insightful properties—Activity study of electrospun TiO2/CuO composite nanofibers for efficient photocatalytic H2 generation
title_short Optimization and an insightful properties—Activity study of electrospun TiO2/CuO composite nanofibers for efficient photocatalytic H2 generation
title_full Optimization and an insightful properties—Activity study of electrospun TiO2/CuO composite nanofibers for efficient photocatalytic H2 generation
title_fullStr Optimization and an insightful properties—Activity study of electrospun TiO2/CuO composite nanofibers for efficient photocatalytic H2 generation
title_full_unstemmed Optimization and an insightful properties—Activity study of electrospun TiO2/CuO composite nanofibers for efficient photocatalytic H2 generation
title_sort optimization and an insightful properties—activity study of electrospun tio2/cuo composite nanofibers for efficient photocatalytic h2 generation
publishDate 2013
url https://hdl.handle.net/10356/99794
http://hdl.handle.net/10220/17798
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