Uniformly dispersed CdS/CdSe quantum dots co-sensitized TiO2 nanotube arrays with high photocatalytic property under visible light

Lingjuan Liu; Jianing Hui; Lili Su; Jun Lv; Yucheng Wu; John T. S. Irvine

doi:10.1016/j.matlet.2014.06.082

Uniformly dispersed CdS/CdSe quantum dots co-sensitized TiO2 nanotube arrays with high photocatalytic property under visible light

Lingjuan Liu, Jianing Hui, Lili Su, Jun Lv, Yucheng Wu^*, John T. S. Irvine

^*Corresponding author for this work

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

19 Citations (Scopus)

Abstract

Highly detached TiO2 nanotube arrays (TiO2-NTAs) were fabricated by anodization method using electrolyte with high water content. CdS and CdSe quantum dots (QDs) were co-deposited on the TiO2-NTAs. The results showed that the CdS and CdSe QDs were uniformly deposited on both the outer wall and inner tube of TiO2-NTAs. The photocatalytic performance of the as-prepared (CdS-CdSe)/TiO2-NTAs was tested by degradation of methyl orange with 0.2 M Na2S and Na2SO3 as sacrificial reagents under visible light (lambda > 400 nm). It was found that the photodegradation rate reached as high as 95.1% in 2 h. Also, a reasonable degradation rate of 87.5% was achieved after 3 cycles, suggesting a good stability of the as-prepared (CdS-CdSe)/TiO2-NTAs. (C) 2014 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	231-235
Number of pages	5
Journal	Materials Letters
Volume	132
Early online date	20 Jun 2014
DOIs	https://doi.org/10.1016/j.matlet.2014.06.082
Publication status	Published - 1 Oct 2014

Keywords

TiO2 nanotube arrays
CdS-CdSe quantum dots
Semiconductors
Nanocomposites
Visible-light activity
Degradation
Electrode
Cells

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10.1016/j.matlet.2014.06.082

Energy Materials Discovery: Energy Materials Discovery Characterisation and Application
Irvine, J. T. S. (PI), Cassidy, M. (CoI), Connor, P. A. (CoI), Savaniu, C. D. (CoI) & Zhou, W. (CoI)
EPSRC
7/01/13 → 6/01/18
Project: Standard

Cite this

@article{603759e7ebff4dd49c38facc4e8301d1,

title = "Uniformly dispersed CdS/CdSe quantum dots co-sensitized TiO2 nanotube arrays with high photocatalytic property under visible light",

abstract = "Highly detached TiO2 nanotube arrays (TiO2-NTAs) were fabricated by anodization method using electrolyte with high water content. CdS and CdSe quantum dots (QDs) were co-deposited on the TiO2-NTAs. The results showed that the CdS and CdSe QDs were uniformly deposited on both the outer wall and inner tube of TiO2-NTAs. The photocatalytic performance of the as-prepared (CdS-CdSe)/TiO2-NTAs was tested by degradation of methyl orange with 0.2 M Na2S and Na2SO3 as sacrificial reagents under visible light (lambda > 400 nm). It was found that the photodegradation rate reached as high as 95.1% in 2 h. Also, a reasonable degradation rate of 87.5% was achieved after 3 cycles, suggesting a good stability of the as-prepared (CdS-CdSe)/TiO2-NTAs. (C) 2014 Elsevier B.V. All rights reserved.",

keywords = "TiO2 nanotube arrays, CdS-CdSe quantum dots, Semiconductors, Nanocomposites, Visible-light activity, Degradation, Electrode, Cells",

author = "Lingjuan Liu and Jianing Hui and Lili Su and Jun Lv and Yucheng Wu and Irvine, {John T. S.}",

note = "This work is financially supported by the National Natural Science Foundation of China (Nos. 51172059, 91023030, 51102071, 51311130317).",

year = "2014",

month = oct,

day = "1",

doi = "10.1016/j.matlet.2014.06.082",

language = "English",

volume = "132",

pages = "231--235",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier",

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TY - JOUR

T1 - Uniformly dispersed CdS/CdSe quantum dots co-sensitized TiO2 nanotube arrays with high photocatalytic property under visible light

AU - Liu, Lingjuan

AU - Hui, Jianing

AU - Su, Lili

AU - Lv, Jun

AU - Wu, Yucheng

AU - Irvine, John T. S.

N1 - This work is financially supported by the National Natural Science Foundation of China (Nos. 51172059, 91023030, 51102071, 51311130317).

PY - 2014/10/1

Y1 - 2014/10/1

N2 - Highly detached TiO2 nanotube arrays (TiO2-NTAs) were fabricated by anodization method using electrolyte with high water content. CdS and CdSe quantum dots (QDs) were co-deposited on the TiO2-NTAs. The results showed that the CdS and CdSe QDs were uniformly deposited on both the outer wall and inner tube of TiO2-NTAs. The photocatalytic performance of the as-prepared (CdS-CdSe)/TiO2-NTAs was tested by degradation of methyl orange with 0.2 M Na2S and Na2SO3 as sacrificial reagents under visible light (lambda > 400 nm). It was found that the photodegradation rate reached as high as 95.1% in 2 h. Also, a reasonable degradation rate of 87.5% was achieved after 3 cycles, suggesting a good stability of the as-prepared (CdS-CdSe)/TiO2-NTAs. (C) 2014 Elsevier B.V. All rights reserved.

AB - Highly detached TiO2 nanotube arrays (TiO2-NTAs) were fabricated by anodization method using electrolyte with high water content. CdS and CdSe quantum dots (QDs) were co-deposited on the TiO2-NTAs. The results showed that the CdS and CdSe QDs were uniformly deposited on both the outer wall and inner tube of TiO2-NTAs. The photocatalytic performance of the as-prepared (CdS-CdSe)/TiO2-NTAs was tested by degradation of methyl orange with 0.2 M Na2S and Na2SO3 as sacrificial reagents under visible light (lambda > 400 nm). It was found that the photodegradation rate reached as high as 95.1% in 2 h. Also, a reasonable degradation rate of 87.5% was achieved after 3 cycles, suggesting a good stability of the as-prepared (CdS-CdSe)/TiO2-NTAs. (C) 2014 Elsevier B.V. All rights reserved.

KW - TiO2 nanotube arrays

KW - CdS-CdSe quantum dots

KW - Semiconductors

KW - Nanocomposites

KW - Visible-light activity

KW - Degradation

KW - Electrode

KW - Cells

U2 - 10.1016/j.matlet.2014.06.082

DO - 10.1016/j.matlet.2014.06.082

M3 - Article

SN - 0167-577X

VL - 132

SP - 231

EP - 235

JO - Materials Letters

JF - Materials Letters

ER -

Uniformly dispersed CdS/CdSe quantum dots co-sensitized TiO2 nanotube arrays with high photocatalytic property under visible light

Abstract

Keywords

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Projects

Energy Materials Discovery: Energy Materials Discovery Characterisation and Application

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