Electrospun Bi₃⁺/TiO₂ nanofibers for concurrent photocatalytic H₂ and clean water production from glycerol under solar irradiation: a systematic study
In this study, bismuth/titanium oxide (Bi3+/TiO2) composite nanofibers (herein after referred to as Bi/TiO2) with enhanced physicochemical properties thus photocatalytic efficiency are successfully synthesized via electrospinning which maximizes the uniformity of Bi and Ti at molecular level. Bi/TiO...
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sg-ntu-dr.10356-1606542022-07-29T05:27:42Z Electrospun Bi₃⁺/TiO₂ nanofibers for concurrent photocatalytic H₂ and clean water production from glycerol under solar irradiation: a systematic study Lee, Siew Siang Bai, Hongwei Chua, Song Cherng Lee, Kang Wei Sun, Darren Delai School of Civil and Environmental Engineering Republic Polytechnic Engineering::Environmental engineering Clean Water Production Composite Nanofibers In this study, bismuth/titanium oxide (Bi3+/TiO2) composite nanofibers (herein after referred to as Bi/TiO2) with enhanced physicochemical properties thus photocatalytic efficiency are successfully synthesized via electrospinning which maximizes the uniformity of Bi and Ti at molecular level. Bi/TiO2 shows positive characterization through anatase crystallinity, large light utilization rate, high specific surface area and low electron holes pair recombination rate as a result of the novel materials synthesis approach. Glycerol as a typical pollutant of industrial wastewater, is used here to demonstrate the concurrent production of chean water and H2 over the well synthesized Bi/TiO2. Bi is incorporated to extend the light absorbance capability of TiO2 to visible light region. Experimental data shows that 3% Bi/TiO2 exhibits the highest H2 generation and Total Organic Carbon (TOC) removal. The reduction of TOC of 8% means the conversion of glycerol into H2 has been achieved, which is in favor of the production of clean water from highly polluted glycerol wastewater. An optimization study is undertaken by varying the calcination temperature to investigate properties-activity relationship of the new photocatalyst, which exhibited higher photocatlytic efficiency under both UV–visible and visible light compared with that of bare TiO2. The mechanism illustration is derived from the novel materials synthesis and property optimization to explain the rationale behind this interesting phenomenon. It is worth to note that Bi/TiO2 nanofibers represent a promising photocatalyst for environmental remediation and sustainability where it can be potentially used in glycerol by-product or waste from the industry under the renewable solar irradiation to generate H2 and clean water simultaneously. 2022-07-29T05:27:42Z 2022-07-29T05:27:42Z 2021 Journal Article Lee, S. S., Bai, H., Chua, S. C., Lee, K. W. & Sun, D. D. (2021). Electrospun Bi₃⁺/TiO₂ nanofibers for concurrent photocatalytic H₂ and clean water production from glycerol under solar irradiation: a systematic study. Journal of Cleaner Production, 298, 126671-. https://dx.doi.org/10.1016/j.jclepro.2021.126671 0959-6526 https://hdl.handle.net/10356/160654 10.1016/j.jclepro.2021.126671 2-s2.0-85103330172 298 126671 en Journal of Cleaner Production © 2021 Elsevier Ltd. All rights reserved. |
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Engineering::Environmental engineering Clean Water Production Composite Nanofibers Lee, Siew Siang Bai, Hongwei Chua, Song Cherng Lee, Kang Wei Sun, Darren Delai Electrospun Bi₃⁺/TiO₂ nanofibers for concurrent photocatalytic H₂ and clean water production from glycerol under solar irradiation: a systematic study |
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In this study, bismuth/titanium oxide (Bi3+/TiO2) composite nanofibers (herein after referred to as Bi/TiO2) with enhanced physicochemical properties thus photocatalytic efficiency are successfully synthesized via electrospinning which maximizes the uniformity of Bi and Ti at molecular level. Bi/TiO2 shows positive characterization through anatase crystallinity, large light utilization rate, high specific surface area and low electron holes pair recombination rate as a result of the novel materials synthesis approach. Glycerol as a typical pollutant of industrial wastewater, is used here to demonstrate the concurrent production of chean water and H2 over the well synthesized Bi/TiO2. Bi is incorporated to extend the light absorbance capability of TiO2 to visible light region. Experimental data shows that 3% Bi/TiO2 exhibits the highest H2 generation and Total Organic Carbon (TOC) removal. The reduction of TOC of 8% means the conversion of glycerol into H2 has been achieved, which is in favor of the production of clean water from highly polluted glycerol wastewater. An optimization study is undertaken by varying the calcination temperature to investigate properties-activity relationship of the new photocatalyst, which exhibited higher photocatlytic efficiency under both UV–visible and visible light compared with that of bare TiO2. The mechanism illustration is derived from the novel materials synthesis and property optimization to explain the rationale behind this interesting phenomenon. It is worth to note that Bi/TiO2 nanofibers represent a promising photocatalyst for environmental remediation and sustainability where it can be potentially used in glycerol by-product or waste from the industry under the renewable solar irradiation to generate H2 and clean water simultaneously. |
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School of Civil and Environmental Engineering |
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School of Civil and Environmental Engineering Lee, Siew Siang Bai, Hongwei Chua, Song Cherng Lee, Kang Wei Sun, Darren Delai |
format |
Article |
author |
Lee, Siew Siang Bai, Hongwei Chua, Song Cherng Lee, Kang Wei Sun, Darren Delai |
author_sort |
Lee, Siew Siang |
title |
Electrospun Bi₃⁺/TiO₂ nanofibers for concurrent photocatalytic H₂ and clean water production from glycerol under solar irradiation: a systematic study |
title_short |
Electrospun Bi₃⁺/TiO₂ nanofibers for concurrent photocatalytic H₂ and clean water production from glycerol under solar irradiation: a systematic study |
title_full |
Electrospun Bi₃⁺/TiO₂ nanofibers for concurrent photocatalytic H₂ and clean water production from glycerol under solar irradiation: a systematic study |
title_fullStr |
Electrospun Bi₃⁺/TiO₂ nanofibers for concurrent photocatalytic H₂ and clean water production from glycerol under solar irradiation: a systematic study |
title_full_unstemmed |
Electrospun Bi₃⁺/TiO₂ nanofibers for concurrent photocatalytic H₂ and clean water production from glycerol under solar irradiation: a systematic study |
title_sort |
electrospun bi₃⁺/tio₂ nanofibers for concurrent photocatalytic h₂ and clean water production from glycerol under solar irradiation: a systematic study |
publishDate |
2022 |
url |
https://hdl.handle.net/10356/160654 |
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1739837474029436928 |