Jump to main content
Jump to site search

Issue 75, 2014
Previous Article Next Article

Block copolymer–cyclodextrin supramolecular assemblies as soft templates for the synthesis of titania materials with controlled crystallinity, porosity and photocatalytic activity

Author affiliations

Abstract

Nanostructured titania materials with tunable porosity and crystalline framework were prepared in an aqueous phase by using a template-directed colloidal self-assembly strategy. The approach employs the supramolecular assemblies formed between the randomly methylated β-cyclodextrin and the block copolymer P123 as soft templates and the sol–gel synthesised TiO2 nanocrystals as building blocks. By combining X-ray diffraction, N2-adsorption, field emission scanning electron microscopy and UV-visible spectroscopy, we show that considerable control over crystallite size, polymorph content and particle morphology could be achieved by using a delicate balance between the composition and structure of the supramolecular template as well as the reaction conditions. The photocatalytic activity of these mesoporous TiO2 materials was evaluated in the photodegradation of a toxic herbicide, the phenoxyacetic acid (PAA), and was correlated to the structural and textural characteristics of the photocatalyst.

Graphical abstract: Block copolymer–cyclodextrin supramolecular assemblies as soft templates for the synthesis of titania materials with controlled crystallinity, porosity and photocatalytic activity

Back to tab navigation

Supplementary files

Publication details

The article was received on 19 Jun 2014, accepted on 19 Aug 2014 and first published on 19 Aug 2014


Article type: Paper
DOI: 10.1039/C4RA05994H
Author version
available:
Download author version (PDF)
Citation: RSC Adv., 2014,4, 40061-40070
  •   Request permissions

    Block copolymer–cyclodextrin supramolecular assemblies as soft templates for the synthesis of titania materials with controlled crystallinity, porosity and photocatalytic activity

    A. Lannoy, R. Bleta, C. Machut, E. Monflier and A. Ponchel, RSC Adv., 2014, 4, 40061
    DOI: 10.1039/C4RA05994H

Search articles by author

Spotlight

Advertisements