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Lookup NU author(s): Dr John ErringtonORCiD
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
Amphiphilic polyoxometalate (POM) surfactants were prepared by covalently grafting double hydrophobic tails with chain lengths C 12 H 25 , C 14 H 29 , C 16 H 33 or C 18 H 37 onto the lacunary WellsDawson {P 2 W 17 O 61 } headgroup. The critical micelle concentrations (CMCs) of these novel surfactants in aqueous solutions were determined by conductivity, and micelle formation was studied by small angle neutron scattering (SANS). Surprisingly, the amphiphiles with longer hydrophobic tails tend to form less elongated and more globular micelles in water. The self-assembled amphiphilic polyoxometalates were used as templates in the hydrothermal synthesis of mesoporous TiO 2 containing dispersed, immobilised {P 2 W 17 O 61 } units, which showed enhanced activity for the photodegradation of rhodamine B (RhB). The catalyst was recycled eight times with no loss of efficiency, demonstrating the stability of the hybrid structure. The amphiphilic polyoxometalates, therefore have excellent potential for the synthesis of various types of catalytically active porous materials.
Author(s): Di A, Schmitt J, Da Silva MA, Hossain KMZ, Mahmoudi N, Errington RJ, Edler KJ
Publication type: Article
Publication status: Published
Journal: Nanoscale
Year: 2020
Volume: 12
Issue: 43
Pages: 22245-22257
Print publication date: 21/11/2020
Online publication date: 27/10/2020
Acceptance date: 22/10/2020
Date deposited: 30/10/2020
ISSN (electronic): 2040-3372
Publisher: Royal Society of Chemistry
URL: https://doi.org/10.1039/D0NR05967F
DOI: 10.1039/D0NR05967F
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