Enhanced visible light-induced photoelectrocatalytic degradation of phenol by carbon nanotube-doped TiO2 electrodes

Chen, Lung-Chuan; Ho, Yi‐Ching; Guo, Weisheng; Huang, Chao-Ming; Pan, Ting-Chung

doi:10.1016/j.electacta.2009.02.001

Cited by 175 publications

(74 citation statements)

References 35 publications

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“…35,36 It was also previously shown that chemical bonding between TiO 2 and carbon of graphene sheets can be occurred in a TiO 2 /graphene composite by formation of chemical Ti-C bond. 6, [37][38][39][40] In those works, formation of Ti-C bond was distinguished as the important parameter in the photocatalytic performance. However, the local density approximation (LDA) calculations of anion doped anatase TiO 2 conducted recently revealed that the band gaps of anion doped TiO 2 are actually not narrowing, and the observed visible-light absorption results from the isolated impurity states in the band gap.…”

Section: Electronic Structure Of Carbon-doped Heterojunctionsmentioning

confidence: 99%

A Highly Efficient TiO_2–xC_x Nano-heterojunction Photocatalyst for Visible Light Induced Antibacterial Applications

Etacheri

Michlits²,

Seery³

et al. 2013

ACS Appl. Mater. Interfaces

243

118

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Visible-light-induced antibacterial activity of carbon-doped anatase-brookite titania nano-heterojunction photocatalysts are reported for the first time. These heterostructures were prepared using a novel low temperature (100 °C) non-hydrothermal low power microwave (300 W) assisted method. Formation of interband C 2p states was found to be responsible for the band gap narrowing of the carbon doped heterojunctions. The most active photocatalyst obtained after 60 minutes of microwave irradiation respectively. It is proposed that the photo-excited electrons (from the C 2p level) are effectively transferred from the conduction band of brookite to that of anatase causing efficient electron-hole separation, which is found to be responsible for the superior visible-light induced photocatalytic and antibacterial activities of carbon-doped anatase-brookite nano-heterojunctions.

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Section: Electronic Structure Of Carbon-doped Heterojunctionsmentioning

confidence: 99%

A Highly Efficient TiO_2–xC_x Nano-heterojunction Photocatalyst for Visible Light Induced Antibacterial Applications

Etacheri

Michlits²,

Seery³

et al. 2013

ACS Appl. Mater. Interfaces

243

118

View full text Add to dashboard Cite

show abstract

“…Increasing the CNT content increased the photocurrent, but it decreased when the CNT was increased further. 36 Although the undoped TiO2 electrode provided a lower photocurrent than that of the CNT/TiO 2 sample, as a result of visible light absorption by residual carbon-containing and Ti 3+ species. We believe there are three predominant explanations for the synergetic effect induced by the presence of the CNTs.…”

Section: Resultsmentioning

confidence: 99%

Fabrication and Electro-photolysis Property of Carbon Nanotubes/Titanium Composite Photocatalysts for Methylene Blue

Zhang¹,

Chen²,

2009

Bulletin of the Korean Chemical Society

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In this study, we have studied on improved performance of carbon nanotubes/titanium (CNT/TiO2) structure electrode for methylene blue (MB). The composite electrodes consisting of CNTs and a titanium oxide matrix with phenol resin binder was fabricated with a mixture method. The chemical and morphological structure of CNT/TiO2 composites were characterized by means of BET surface area, X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-Vis absorption technique, Raman spectroscopy and energy dispersive X-ray (EDX). The electrode showed a remarkably enhanced performance for MB oxidation under UV illumination with or without electro-chemical reaction (ECR). Such a remarkably improved performance of the CNT/TiO2 structure electrode might be due to the enhanced MB oxidation by electro-and photo-generated electrons and holes in the CNTs and TiO2 under UV illumination with or without ECR.

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“…The quantities of carbon and Fe in the Fe/TiO 2 -nanocarbon composites were small with a major element of Ti. According to former studies, 4,20 The spectral changes of MB in the Fe/TiO2 and Fe/TiO2-nanocarbon composites are shown in Fig. 6.…”

Section: Resultsmentioning

confidence: 99%

Relative Photonic Properties of Fe/TiO₂-Nanocarbon Catalysts for Degradation of MB Solution under Visible Light

Oh¹,

Zhang²,

Meng³

et al. 2010

Bulletin of the Korean Chemical Society

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Nanocarbon supported Fe/TiO2 composite catalysts were prepared using CNTs (carbon nanotubes) and C60 (fullerene) as nanocarbon sources by a modified sol-gel method. The Fe/TiO2-nanocarbon composites were characterized by the BET surface area, scanning electron microscope (SEM), Transmission Electron Microscope (TEM), X-ray diffraction (XRD), energy dispersive X-ray (EDX) and UV-vis spectra. In comparison with non-nanocarbon doped Fe/TiO2 composites, the nanocarbon supported Fe/TiO2 composites had higher absorption ability with a larger specific surface area, and showed higher photocatalytic activity during the degradation of methylene blue (MB) under visible light. The reasons for the obvious increase of photocatalytic activity indicated that the photoactivity not only benefits from nanocarbon introduced, but also relates to the cooperative effect of the Fe as a dopant.

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Enhanced visible light-induced photoelectrocatalytic degradation of phenol by carbon nanotube-doped TiO2 electrodes

Cited by 175 publications

References 35 publications

A Highly Efficient TiO_2–xC_x Nano-heterojunction Photocatalyst for Visible Light Induced Antibacterial Applications

A Highly Efficient TiO_2–xC_x Nano-heterojunction Photocatalyst for Visible Light Induced Antibacterial Applications

Fabrication and Electro-photolysis Property of Carbon Nanotubes/Titanium Composite Photocatalysts for Methylene Blue

Relative Photonic Properties of Fe/TiO₂-Nanocarbon Catalysts for Degradation of MB Solution under Visible Light

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Enhanced visible light-induced photoelectrocatalytic degradation of phenol by carbon nanotube-doped TiO2 electrodes

Cited by 175 publications

References 35 publications

A Highly Efficient TiO2–xCx Nano-heterojunction Photocatalyst for Visible Light Induced Antibacterial Applications

A Highly Efficient TiO2–xCx Nano-heterojunction Photocatalyst for Visible Light Induced Antibacterial Applications

Fabrication and Electro-photolysis Property of Carbon Nanotubes/Titanium Composite Photocatalysts for Methylene Blue

Relative Photonic Properties of Fe/TiO2-Nanocarbon Catalysts for Degradation of MB Solution under Visible Light

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A Highly Efficient TiO_2–xC_x Nano-heterojunction Photocatalyst for Visible Light Induced Antibacterial Applications

A Highly Efficient TiO_2–xC_x Nano-heterojunction Photocatalyst for Visible Light Induced Antibacterial Applications

Relative Photonic Properties of Fe/TiO₂-Nanocarbon Catalysts for Degradation of MB Solution under Visible Light