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Issue 74, 2017, Issue in Progress
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3D macroporous TiO2 inverse opal binary and ternary composite materials and their photocatalytic activity

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Abstract

This work reports the design of binary and ternary thin film based photocatalysts consisting of 3D macroporous inverse opal (IO) titanium dioxide, IO-TiO2, embedded with gold nanoparticles (AuNPs) and cadmium sulfide (CdS) thin film. The composite materials thus created are IO-TiO2–AuNPs, IO-TiO2–CdS, and IO-TiO2–AuNPs–CdS. The IO-TiO2 3D macroporous films are obtained by a liquid phase co-assembly method consisting of the simultaneous self-assembly of polystyrene (PS) nanospheres with a water soluble titania precursor. AuNPs and CdS thin films are integrated to the above IO-TiO2 by in situ synthesis and successive ionic layer adsorption and reaction (SILAR) methods, respectively. The composite materials demonstrated very good photocatalytic proficiency against an organic pollutant analog under UV and visible lighting conditions. The morphologies of the photocatalysts were imaged with scanning electron microscopy (SEM). The elemental components were determined using energy dispersive X-ray (EDX) line analysis, and Raman spectroscopy. UV-visible spectroscopy was used to assess the photocatalytic efficiency of the composites in decomposing organic pollutant analog.

Graphical abstract: 3D macroporous TiO2 inverse opal binary and ternary composite materials and their photocatalytic activity

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Supplementary files

Article information


Submitted
30 May 2017
Accepted
28 Sep 2017
First published
06 Oct 2017

This article is Open Access

RSC Adv., 2017,7, 47038-47048
Article type
Paper

3D macroporous TiO2 inverse opal binary and ternary composite materials and their photocatalytic activity

D. A. Corella and B. Baruah, RSC Adv., 2017, 7, 47038
DOI: 10.1039/C7RA06051C

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

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    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
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    [Original citation] - Published by the PCCP Owner Societies.
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    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
  • For reproduction of material from all other RSC journals:
    [Original citation] - Published by The Royal Society of Chemistry.

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