Titania nanostructures fabricated by atomic layer deposition using spherical protein cages

Langmuir : the ACS Journal of Surfaces and Colloids
Hyunbin KimMato Knez

Abstract

An emerging nanofabrication technology is to synthesize nanoscale inorganic materials with narrow size distribution using biological systems, which are size-constrained, fairly robust, and easily removable. Apoferritin, a spherical and hollow protein complex, was subjected to atomic layer deposition of TiO(2). The growth of TiO(2) on the protein surface was investigated as a function of the precursor exposure and purge length. Thermal pretreatment and osmotic dehydration lead to controllable deposition both on the outer surface and within the inner cavity of apoferritin. Depending on the experimental conditions, either hollow spherical nanoparticles or core-shell nanoparticles comprising TiO(2) were identified.

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Oct 9, 2014·Chemical Reviews·Lixia SangClemens Burda
Jan 27, 2012·Advanced Materials·Catherine MarichyNicola Pinna
Dec 14, 2011·Advances in Colloid and Interface Science·Abhijit BiswasFranz Faupel
Oct 25, 2012·Chemical Society Reviews·Yiding LiuYadong Yin

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