Improved photocatalytic activity of highly ordered TiO 2 nanowire arrays for methylene blue degradation

Xiaojun Lv; Hao Zhang; Haixin Chang

doi:10.1016/j.matchemphys.2012.07.059

Improved photocatalytic activity of highly ordered TiO ₂ nanowire arrays for methylene blue degradation

Xiaojun Lv, Hao Zhang, Haixin Chang

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Although many efforts have been done on the photocatalytic properties of anodic TiO ₂ nanotubes, much less work is done on the photocatalytic performance of TiO ₂ nanowires. Self-organized anodic TiO ₂ nanowire arrays have been fabricated using a simple electrochemical approach and used as photocatalysts in photodegradation of methylene blue (MB) dyes. Here we found for the first time TiO ₂ nanowires have better photocatalytic properties and incident photon-to-current efficiency (IPCE) than TiO ₂ nanotubes. N doped TiO ₂ nanowires showed further enhancement in photodegradation activity and photocurrent response in the visible region. Such TiO ₂ nanowires are expected to have great potential in photodegradation of pollutants, photovoltaic solar energy conversion and water splitting for hydrogen generation as well.

Original language	English
Pages (from-to)	789-795
Number of pages	7
Journal	Materials Chemistry and Physics
Volume	136
Issue number	2-3
DOIs	https://doi.org/10.1016/j.matchemphys.2012.07.059
Publication status	Published - 2012 Oct 15
Externally published	Yes

Keywords

High photocatalytic activity
Nitrogen doping
Photocurrent response
Photodegradation
TiO nanowires

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.matchemphys.2012.07.059

Cite this

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title = "Improved photocatalytic activity of highly ordered TiO 2 nanowire arrays for methylene blue degradation",

abstract = "Although many efforts have been done on the photocatalytic properties of anodic TiO 2 nanotubes, much less work is done on the photocatalytic performance of TiO 2 nanowires. Self-organized anodic TiO 2 nanowire arrays have been fabricated using a simple electrochemical approach and used as photocatalysts in photodegradation of methylene blue (MB) dyes. Here we found for the first time TiO 2 nanowires have better photocatalytic properties and incident photon-to-current efficiency (IPCE) than TiO 2 nanotubes. N doped TiO 2 nanowires showed further enhancement in photodegradation activity and photocurrent response in the visible region. Such TiO 2 nanowires are expected to have great potential in photodegradation of pollutants, photovoltaic solar energy conversion and water splitting for hydrogen generation as well.",

keywords = "High photocatalytic activity, Nitrogen doping, Photocurrent response, Photodegradation, TiO nanowires",

author = "Xiaojun Lv and Hao Zhang and Haixin Chang",

note = "Funding Information: This work was financially supported by the National Natural Science Foundation of China (No. 21107117 ), We thank Prof. J. H. Li for the advice and suggestion of experiments and discussion. H.X.C. acknowledges the WPI Initiative funding and WPI-AIMR fusion research funding from MEXT , Japan.",

year = "2012",

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doi = "10.1016/j.matchemphys.2012.07.059",

language = "English",

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AU - Lv, Xiaojun

AU - Zhang, Hao

AU - Chang, Haixin

N1 - Funding Information: This work was financially supported by the National Natural Science Foundation of China (No. 21107117 ), We thank Prof. J. H. Li for the advice and suggestion of experiments and discussion. H.X.C. acknowledges the WPI Initiative funding and WPI-AIMR fusion research funding from MEXT , Japan.

PY - 2012/10/15

Y1 - 2012/10/15

N2 - Although many efforts have been done on the photocatalytic properties of anodic TiO 2 nanotubes, much less work is done on the photocatalytic performance of TiO 2 nanowires. Self-organized anodic TiO 2 nanowire arrays have been fabricated using a simple electrochemical approach and used as photocatalysts in photodegradation of methylene blue (MB) dyes. Here we found for the first time TiO 2 nanowires have better photocatalytic properties and incident photon-to-current efficiency (IPCE) than TiO 2 nanotubes. N doped TiO 2 nanowires showed further enhancement in photodegradation activity and photocurrent response in the visible region. Such TiO 2 nanowires are expected to have great potential in photodegradation of pollutants, photovoltaic solar energy conversion and water splitting for hydrogen generation as well.

AB - Although many efforts have been done on the photocatalytic properties of anodic TiO 2 nanotubes, much less work is done on the photocatalytic performance of TiO 2 nanowires. Self-organized anodic TiO 2 nanowire arrays have been fabricated using a simple electrochemical approach and used as photocatalysts in photodegradation of methylene blue (MB) dyes. Here we found for the first time TiO 2 nanowires have better photocatalytic properties and incident photon-to-current efficiency (IPCE) than TiO 2 nanotubes. N doped TiO 2 nanowires showed further enhancement in photodegradation activity and photocurrent response in the visible region. Such TiO 2 nanowires are expected to have great potential in photodegradation of pollutants, photovoltaic solar energy conversion and water splitting for hydrogen generation as well.

KW - High photocatalytic activity

KW - Nitrogen doping

KW - Photocurrent response

KW - Photodegradation

KW - TiO nanowires

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