Novel ultralong and photoactive Bi₂Ti₄O₁₁/TiO₂ heterojunction nanofibers toward efficient textile wastewater treatment
The elimination of dyes from textile wastewater with a lower carbon footprint is highly contingent on the design of green catalysts. Here, we innovatively developed ultralong one-dimensional Bi2Ti4O11/TiO2 heterojunction nanofibers via electrospinning so as to photocatalytically degrade dyes efficie...
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sg-ntu-dr.10356-1654312023-03-31T15:42:26Z Novel ultralong and photoactive Bi₂Ti₄O₁₁/TiO₂ heterojunction nanofibers toward efficient textile wastewater treatment Juay, Jermyn Yang, Jia-Cheng E. Bai, Hongwei Sun, Darren Delai School of Civil and Environmental Engineering Engineering::Environmental engineering Absorption Edges Green Catalysts The elimination of dyes from textile wastewater with a lower carbon footprint is highly contingent on the design of green catalysts. Here, we innovatively developed ultralong one-dimensional Bi2Ti4O11/TiO2 heterojunction nanofibers via electrospinning so as to photocatalytically degrade dyes efficiently and sustainably through the utilisation of renewable solar irradiation. The heterostructured Bi2Ti4O11/TiO2 nanofibers exhibited desirable activity in the visible light region through the slight shift of the absorption edge to a longer wavelength. The Bi2Ti4O11/TiO2 nanofibers calcined at 550 °C had a lower optical band gap (3.08 eV) than that of the pure TiO2 (3.32 eV), as evidenced by their higher photocatalytic degradation kinetics of a model dye (Acid Orange 7) (2.5 times greater than those of pure TiO2). The enhanced visible light photocatalytic performance arose from the formation of both the Bi2Ti4O11/TiO2 heterojunction and the effective separation of photogenerated holes and electrons. The employment of ultralong Bi2Ti4O11/TiO2 heterojunction nanofibers for dye removal/decolourisation under visible light is an efficient, cost effective and sustainable solution, which will provide significant insights for practical textile wastewater treatment in view of practical engineering applications. Nanyang Technological University Published version We acknowledge Interdisciplinary Graduate School (IGS) and Nanyang Environment Water Research Institute (NEWRI) for their financial support. The scholarship provided by IGS and NEWRI is appreciated. 2023-03-27T05:33:13Z 2023-03-27T05:33:13Z 2022 Journal Article Juay, J., Yang, J. E., Bai, H. & Sun, D. D. (2022). Novel ultralong and photoactive Bi₂Ti₄O₁₁/TiO₂ heterojunction nanofibers toward efficient textile wastewater treatment. RSC Advances, 12(39), 25449-25456. https://dx.doi.org/10.1039/d2ra02181a 2046-2069 https://hdl.handle.net/10356/165431 10.1039/d2ra02181a 36199309 2-s2.0-85139395751 39 12 25449 25456 en RSC Advances © 2022 The Author(s). Published by the Royal Society of Chemistry. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. application/pdf |
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Engineering::Environmental engineering Absorption Edges Green Catalysts Juay, Jermyn Yang, Jia-Cheng E. Bai, Hongwei Sun, Darren Delai Novel ultralong and photoactive Bi₂Ti₄O₁₁/TiO₂ heterojunction nanofibers toward efficient textile wastewater treatment |
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The elimination of dyes from textile wastewater with a lower carbon footprint is highly contingent on the design of green catalysts. Here, we innovatively developed ultralong one-dimensional Bi2Ti4O11/TiO2 heterojunction nanofibers via electrospinning so as to photocatalytically degrade dyes efficiently and sustainably through the utilisation of renewable solar irradiation. The heterostructured Bi2Ti4O11/TiO2 nanofibers exhibited desirable activity in the visible light region through the slight shift of the absorption edge to a longer wavelength. The Bi2Ti4O11/TiO2 nanofibers calcined at 550 °C had a lower optical band gap (3.08 eV) than that of the pure TiO2 (3.32 eV), as evidenced by their higher photocatalytic degradation kinetics of a model dye (Acid Orange 7) (2.5 times greater than those of pure TiO2). The enhanced visible light photocatalytic performance arose from the formation of both the Bi2Ti4O11/TiO2 heterojunction and the effective separation of photogenerated holes and electrons. The employment of ultralong Bi2Ti4O11/TiO2 heterojunction nanofibers for dye removal/decolourisation under visible light is an efficient, cost effective and sustainable solution, which will provide significant insights for practical textile wastewater treatment in view of practical engineering applications. |
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School of Civil and Environmental Engineering |
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School of Civil and Environmental Engineering Juay, Jermyn Yang, Jia-Cheng E. Bai, Hongwei Sun, Darren Delai |
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Article |
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Juay, Jermyn Yang, Jia-Cheng E. Bai, Hongwei Sun, Darren Delai |
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Juay, Jermyn |
title |
Novel ultralong and photoactive Bi₂Ti₄O₁₁/TiO₂ heterojunction nanofibers toward efficient textile wastewater treatment |
title_short |
Novel ultralong and photoactive Bi₂Ti₄O₁₁/TiO₂ heterojunction nanofibers toward efficient textile wastewater treatment |
title_full |
Novel ultralong and photoactive Bi₂Ti₄O₁₁/TiO₂ heterojunction nanofibers toward efficient textile wastewater treatment |
title_fullStr |
Novel ultralong and photoactive Bi₂Ti₄O₁₁/TiO₂ heterojunction nanofibers toward efficient textile wastewater treatment |
title_full_unstemmed |
Novel ultralong and photoactive Bi₂Ti₄O₁₁/TiO₂ heterojunction nanofibers toward efficient textile wastewater treatment |
title_sort |
novel ultralong and photoactive bi₂ti₄o₁₁/tio₂ heterojunction nanofibers toward efficient textile wastewater treatment |
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2023 |
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https://hdl.handle.net/10356/165431 |
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1762031111866679296 |