Solar-light-driven photodegradation and antibacterial activity of hierarchical TiO2/ZnO/CuO material

Inspired by the highly efficient hierarchical structure of plants that use natural light, the hierarchical “forest-like” TiO2 nanofiber/ZnO nanorod/CuO nanoparticle ternary material 2 is synthesized by a stepwise process: electrospinning of TiO2 nanofibers, hydrothermal growth of ZnO nanorods, and p...

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Main Authors: Bai, Hongwei, Liu, Zhaoyang., Sun, Darren Delai
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/96774
http://hdl.handle.net/10220/13042
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-967742020-03-07T11:43:33Z Solar-light-driven photodegradation and antibacterial activity of hierarchical TiO2/ZnO/CuO material Bai, Hongwei Liu, Zhaoyang. Sun, Darren Delai School of Civil and Environmental Engineering Inspired by the highly efficient hierarchical structure of plants that use natural light, the hierarchical “forest-like” TiO2 nanofiber/ZnO nanorod/CuO nanoparticle ternary material 2 is synthesized by a stepwise process: electrospinning of TiO2 nanofibers, hydrothermal growth of ZnO nanorods, and photodeposition of CuO nanoparticles. Material 2 has a higher photodegradation rate of acid orange (AO 7) and stronger antibacterial capability under irradiation with solar light in comparison to that of the hierarchical “tree-like” TiO2 nanofiber/ZnO nanorod material 1 and one dimensional as-spun TiO2 nanofibers. These enhancements result from the unique hierarchical forest- and tree-like features of materials 1 and 2, which enhance the light absorption capability, increase the specific surface area for mass transfer and bacteria attachment, create more reaction sites, and retard the recombination of photogenerated electrons and holes. A proportional relationship was found between the photocatalytic activity and the hierarchy of the materials. The sizes of the hierarchical nanostructured materials are in the micron range, which provides the opportunity for using these materials in engineering applications. 2013-08-06T04:01:51Z 2019-12-06T19:34:58Z 2013-08-06T04:01:51Z 2019-12-06T19:34:58Z 2012 2012 Journal Article Bai, H., Liu, Z.,& Sun, D. D. (2012). Solar-Light-Driven Photodegradation and Antibacterial Activity of Hierarchical TiO2/ZnO/CuO Material. ChemPlusChem, 77(10), 941-948. 2192-6506 https://hdl.handle.net/10356/96774 http://hdl.handle.net/10220/13042 10.1002/cplu.201200131 en Chempluschem
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
description Inspired by the highly efficient hierarchical structure of plants that use natural light, the hierarchical “forest-like” TiO2 nanofiber/ZnO nanorod/CuO nanoparticle ternary material 2 is synthesized by a stepwise process: electrospinning of TiO2 nanofibers, hydrothermal growth of ZnO nanorods, and photodeposition of CuO nanoparticles. Material 2 has a higher photodegradation rate of acid orange (AO 7) and stronger antibacterial capability under irradiation with solar light in comparison to that of the hierarchical “tree-like” TiO2 nanofiber/ZnO nanorod material 1 and one dimensional as-spun TiO2 nanofibers. These enhancements result from the unique hierarchical forest- and tree-like features of materials 1 and 2, which enhance the light absorption capability, increase the specific surface area for mass transfer and bacteria attachment, create more reaction sites, and retard the recombination of photogenerated electrons and holes. A proportional relationship was found between the photocatalytic activity and the hierarchy of the materials. The sizes of the hierarchical nanostructured materials are in the micron range, which provides the opportunity for using these materials in engineering applications.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Bai, Hongwei
Liu, Zhaoyang.
Sun, Darren Delai
format Article
author Bai, Hongwei
Liu, Zhaoyang.
Sun, Darren Delai
spellingShingle Bai, Hongwei
Liu, Zhaoyang.
Sun, Darren Delai
Solar-light-driven photodegradation and antibacterial activity of hierarchical TiO2/ZnO/CuO material
author_sort Bai, Hongwei
title Solar-light-driven photodegradation and antibacterial activity of hierarchical TiO2/ZnO/CuO material
title_short Solar-light-driven photodegradation and antibacterial activity of hierarchical TiO2/ZnO/CuO material
title_full Solar-light-driven photodegradation and antibacterial activity of hierarchical TiO2/ZnO/CuO material
title_fullStr Solar-light-driven photodegradation and antibacterial activity of hierarchical TiO2/ZnO/CuO material
title_full_unstemmed Solar-light-driven photodegradation and antibacterial activity of hierarchical TiO2/ZnO/CuO material
title_sort solar-light-driven photodegradation and antibacterial activity of hierarchical tio2/zno/cuo material
publishDate 2013
url https://hdl.handle.net/10356/96774
http://hdl.handle.net/10220/13042
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