Solar-light-driven photodegradation and antibacterial activity of hierarchical TiO 2/ZnO/CuO material

Hongwei Bai, Zhaoyang Liu, Darren Delai Sun

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Inspired by the highly efficient hierarchical structure of plants that use natural light, the hierarchical "forest-like" TiO 2 nanofiber/ZnO nanorod/CuO nanoparticle ternary material 2 is synthesized by a stepwise process: electrospinning of TiO 2 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" TiO 2 nanofiber/ZnO nanorod material 1 and one dimensional as-spun TiO 2 nanofibers. These en-hancements 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.

Original languageEnglish
Pages (from-to)941-948
Number of pages8
JournalChemPlusChem
Volume77
Issue number10
DOIs
Publication statusPublished - Oct 2012
Externally publishedYes

Fingerprint

Photodegradation
Nanofibers
Nanorods
Nanoparticles
Electrospinning
Nanostructured materials
Specific surface area
Light absorption
Bacteria
Mass transfer
Irradiation
Acids
Electrons

Keywords

  • Antibacterial agents
  • Hierarchical materials photodegradation
  • Ternary materials
  • Titanium dioxide

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Solar-light-driven photodegradation and antibacterial activity of hierarchical TiO 2/ZnO/CuO material. / Bai, Hongwei; Liu, Zhaoyang; Sun, Darren Delai.

In: ChemPlusChem, Vol. 77, No. 10, 10.2012, p. 941-948.

Research output: Contribution to journalArticle

@article{4e0934260212413da98efdadcb0c42d3,
title = "Solar-light-driven photodegradation and antibacterial activity of hierarchical TiO 2/ZnO/CuO material",
abstract = "Inspired by the highly efficient hierarchical structure of plants that use natural light, the hierarchical {"}forest-like{"} TiO 2 nanofiber/ZnO nanorod/CuO nanoparticle ternary material 2 is synthesized by a stepwise process: electrospinning of TiO 2 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{"} TiO 2 nanofiber/ZnO nanorod material 1 and one dimensional as-spun TiO 2 nanofibers. These en-hancements 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.",
keywords = "Antibacterial agents, Hierarchical materials photodegradation, Ternary materials, Titanium dioxide",
author = "Hongwei Bai and Zhaoyang Liu and Sun, {Darren Delai}",
year = "2012",
month = "10",
doi = "10.1002/cplu.201200131",
language = "English",
volume = "77",
pages = "941--948",
journal = "ChemPlusChem",
issn = "2192-6506",
publisher = "Wiley-VCH Verlag",
number = "10",

}

TY - JOUR

T1 - Solar-light-driven photodegradation and antibacterial activity of hierarchical TiO 2/ZnO/CuO material

AU - Bai, Hongwei

AU - Liu, Zhaoyang

AU - Sun, Darren Delai

PY - 2012/10

Y1 - 2012/10

N2 - Inspired by the highly efficient hierarchical structure of plants that use natural light, the hierarchical "forest-like" TiO 2 nanofiber/ZnO nanorod/CuO nanoparticle ternary material 2 is synthesized by a stepwise process: electrospinning of TiO 2 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" TiO 2 nanofiber/ZnO nanorod material 1 and one dimensional as-spun TiO 2 nanofibers. These en-hancements 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.

AB - Inspired by the highly efficient hierarchical structure of plants that use natural light, the hierarchical "forest-like" TiO 2 nanofiber/ZnO nanorod/CuO nanoparticle ternary material 2 is synthesized by a stepwise process: electrospinning of TiO 2 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" TiO 2 nanofiber/ZnO nanorod material 1 and one dimensional as-spun TiO 2 nanofibers. These en-hancements 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.

KW - Antibacterial agents

KW - Hierarchical materials photodegradation

KW - Ternary materials

KW - Titanium dioxide

UR - http://www.scopus.com/inward/record.url?scp=84869045413&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84869045413&partnerID=8YFLogxK

U2 - 10.1002/cplu.201200131

DO - 10.1002/cplu.201200131

M3 - Article

VL - 77

SP - 941

EP - 948

JO - ChemPlusChem

JF - ChemPlusChem

SN - 2192-6506

IS - 10

ER -