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Electrospun nanofibers of TiO2/CdS heteroarchitectures with enhanced photocatalytic activity by visible light

The schematic profile depicting the energy band structure and occurrence of vectorial electron transfer in the TiO /CdS heteroarchitectures. ► The size and content of CdS nanoparticles grown on TiO nanofibers are tunable. ► TiO /CdS nanofibers have higher photocatalytic activity by visible light. ►... Full description

Journal Title: Journal of Colloid And Interface Science 01 July 2011, Vol.359(1), pp.220-227
Main Author: Su, Chunyan
Other Authors: Shao, Changlu , Liu, Yichun
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0021-9797 ; E-ISSN: 1095-7103 ; DOI: 10.1016/j.jcis.2011.03.044
Link: https://www.sciencedirect.com/science/article/pii/S0021979711003201
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recordid: elsevier_sdoi_10_1016_j_jcis_2011_03_044
title: Electrospun nanofibers of TiO2/CdS heteroarchitectures with enhanced photocatalytic activity by visible light
format: Article
creator:
  • Su, Chunyan
  • Shao, Changlu
  • Liu, Yichun
subjects:
  • Cadmium Sulfide
  • Titanium Dioxide
  • Heteroarchical
  • Nanofibers
  • Photocatalytic
  • Engineering
  • Chemistry
ispartof: Journal of Colloid And Interface Science, 01 July 2011, Vol.359(1), pp.220-227
description: The schematic profile depicting the energy band structure and occurrence of vectorial electron transfer in the TiO /CdS heteroarchitectures. ► The size and content of CdS nanoparticles grown on TiO nanofibers are tunable. ► TiO /CdS nanofibers have higher photocatalytic activity by visible light. ► The electrospinning method combined with hydrothermal process is novel and valuable. Herein, we have demonstrated that the electrospun nanofibers of TiO /CdS heteroarchitectures could be fabricated through combining electrospinning technique with hydrothermal process. The configuration, crystal structure, and element composition of the as-prepared TiO /CdS heteroarchitectures were characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), X-ray diffraction (XRD), resonant Raman spectrometer, X-ray photoelectron spectroscopy (XPS). The results indicated that the high-density hexagonal wurtzite CdS crystalline particles of ca. 6–40 nm in diameter were uniformly and closely grown on anatase TiO nanofibers. Especially, the light-absorption properties as well as photocatalytic characteristics of pure TiO nanofibers and TiO /CdS heteroarchitectures with different amount loading of CdS were also investigated. The absorption of TiO /CdS heteroarchitectures was extended to the visible due to effective immobilization of sensitizing agent CdS on TiO . In contrast with the pure TiO nanofibers, the TiO /CdS heteroarchitectures showed excellent photocatalytic activity by using rhodamine B dye as a model organic substrate under visible-light irradiation. It was worth noting that the cooperative photocatalytic mechanism of the TiO /CdS heteroarchitectures was also discussed.
language: eng
source:
identifier: ISSN: 0021-9797 ; E-ISSN: 1095-7103 ; DOI: 10.1016/j.jcis.2011.03.044
fulltext: fulltext
issn:
  • 0021-9797
  • 00219797
  • 1095-7103
  • 10957103
url: Link


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titleElectrospun nanofibers of TiO2/CdS heteroarchitectures with enhanced photocatalytic activity by visible light
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subjectCadmium Sulfide ; Titanium Dioxide ; Heteroarchical ; Nanofibers ; Photocatalytic ; Engineering ; Chemistry
descriptionThe schematic profile depicting the energy band structure and occurrence of vectorial electron transfer in the TiO /CdS heteroarchitectures. ► The size and content of CdS nanoparticles grown on TiO nanofibers are tunable. ► TiO /CdS nanofibers have higher photocatalytic activity by visible light. ► The electrospinning method combined with hydrothermal process is novel and valuable. Herein, we have demonstrated that the electrospun nanofibers of TiO /CdS heteroarchitectures could be fabricated through combining electrospinning technique with hydrothermal process. The configuration, crystal structure, and element composition of the as-prepared TiO /CdS heteroarchitectures were characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), X-ray diffraction (XRD), resonant Raman spectrometer, X-ray photoelectron spectroscopy (XPS). The results indicated that the high-density hexagonal wurtzite CdS crystalline particles of ca. 6–40 nm in diameter were uniformly and closely grown on anatase TiO nanofibers. Especially, the light-absorption properties as well as photocatalytic characteristics of pure TiO nanofibers and TiO /CdS heteroarchitectures with different amount loading of CdS were also investigated. The absorption of TiO /CdS heteroarchitectures was extended to the visible due to effective immobilization of sensitizing agent CdS on TiO . In contrast with the pure TiO nanofibers, the TiO /CdS heteroarchitectures showed excellent photocatalytic activity by using rhodamine B dye as a model organic substrate under visible-light irradiation. It was worth noting that the cooperative photocatalytic mechanism of the TiO /CdS heteroarchitectures was also discussed.
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