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Issue 22, 2014
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A facile sol–gel synthesis of impurity-free nanocrystalline titania

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Abstract

This paper reports an original technique that provides a highly pure crystalline sol of titania with controllable particle size by ultrasonic activation of the hydrolysis products of titanium isopropoxide in an aqueous medium at a near-neutral pH, which is potentially promising in impurity-sensitive electronics and biochemical engineering. Optimal conditions (H2O/TIP ratio, sonication time, etc.) for preparation of stable nanocrystalline titania sol were adopted. A new mechanism of regulation of aggregation and polycondensation under ultrasonic irradiation is proposed. Entrapment of human serum albumin (HSA) in the formed porous titania matrix results in high thermal stability of the protein dopants: the denaturation temperature of HSA is shifted by 31 °C.

Graphical abstract: A facile sol–gel synthesis of impurity-free nanocrystalline titania

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Article information


Submitted
06 Mar 2014
Accepted
07 Apr 2014
First published
08 Apr 2014

Phys. Chem. Chem. Phys., 2014,16, 10614-10619
Article type
Paper
Author version available

A facile sol–gel synthesis of impurity-free nanocrystalline titania

A. V. Vinogradov, A. V. Ermakova, M. F. Butman, E. Hey-Hawkins and V. V. Vinogradov, Phys. Chem. Chem. Phys., 2014, 16, 10614
DOI: 10.1039/C4CP00969J

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