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Benefits of tubular morphologies on electron transfer properties in CNT/TiNT nanohybrid photocatalyst for enhanced H2 production
Published in Royal Society of Chemistry
2017
Volume: 7
   
Issue: 12
Pages: 7203 - 7209
Abstract
In order to study the influence of one dimensional tubular structures for effective electron and hole transportation onto the surface of a photocatalyst leading to efficient solar photocatalytic hydrogen production, functionalized carbon nanotube (FCNT)/TiO2 nanotube nanohybrids were prepared. TiO2 nanotubes (TiNTs) were prepared by hydrothermal method. A series of novel functionalized carbon nanotube/TiO2 nanotube nanohybrids (CTT) were prepared for different wt% (1-20) of FCNTs by wet impregnation method to extend absorption in the visible region and also to retard the electron-hole pair recombination and thereby to enhance the H2 production capability under solar light irradiation. The functionalized carbon nanotube/TiO2 nanotube nanohybrids (CTT) were characterized with XRD, TEM, DRS-UV-Vis, Raman spectroscopy and XPS for crystal structure, morphology, optical properties and chemical composition. Addition of FCNTs to the TiNTs in CTT nanohybrids extended the absorption to the visible region. Relative electron-hole recombination times were measured with photoluminescence spectra. The highest H2 generation of 29-904 μmol g-1 was observed after 4 h under optimal conditions due to better separation of electron-hole pairs and electron conducting properties. © 2017 The Royal Society of Chemistry.
About the journal
JournalData powered by TypesetRSC Advances
PublisherData powered by TypesetRoyal Society of Chemistry
ISSN20462069
Open AccessNo
Concepts (18)
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    Crystal structure
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    Electrons
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    Hydrogen production
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    Nanostructured materials
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    Nanotubes
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    Optical properties
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    Photoluminescence
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    Solar power generation
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    Yarn
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    ELECTRON-HOLE RECOMBINATION
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    FUNCTIONALIZED CARBON NANOTUBES
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    FUNCTIONALIZED CARBON NANOTUBES (F-CNT)
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    PHOTOCATALYTIC HYDROGEN PRODUCTION
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    Photoluminescence spectrum
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    PRODUCTION CAPABILITIES
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    SOLAR LIGHT IRRADIATION
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    WET IMPREGNATION METHOD
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    Carbon nanotubes