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Hybrid nano titania: molecular formation mechanisms and applications in nanotechnology.

Svensson, Fredric (2020). Hybrid nano titania: molecular formation mechanisms and applications in nanotechnology. Diss. (sammanfattning/summary) Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880
ISBN 978-91-7760-630-7
eISBN 978-91-7760-631-4
[Doctoral thesis]

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Abstract

Nanomaterials are defined as materials with one dimension smaller than 100 nm. At this size, exotic properties start to emerge, making them interesting for a wide range of applications including catalysis, electronics, theranostics, and “smart materials”. Particularly engineered metal oxide nanoparticles have found advanced applications in medical therapy and catalysis. Because of the small size and required homogeneity of these materials, bottom-up synthesis starting from molecular precursors is often the preferred way of production. The present work was initiated with the main purpose to bring insight in the whole chain in materials design and application – from precursor chemistry in the synthesis to physical chemical and biological characteristics of the resulting nanomaterials. It is thus an interdisciplinary project, covering the fields of both chemistry and biology. The chemical part presents synthesis, self-assembly, and chemical characterization of titania nanopowders, hollow titania spheres, and nanotitania-nanocellulose hybrid materials. The biological part primarily evaluates titania-nanocellulose hybrid materials for drug delivery applications using in vitro bacterial cultures and immunological (coagulation-related) responses in human whole blood. Not unexpectedly, titania-nanocellulose hybrids generally induced strong coagulation via the contact activation system. An extensive part of the thesis is dedicated to the solution behavior, stability, and transformation of heteroleptic titanium oxo-alkoxides into nanotitania, using a variety of characterization techniques. The observations support the MTSAL mechanism for formation of metal oxide nanoparticles. No hydrolytic stability, however, from ligandmodification of titanium (oxo-) alkoxides could be observed.

Authors/Creators:Svensson, Fredric
Title:Hybrid nano titania: molecular formation mechanisms and applications in nanotechnology.
Year of publishing :2020
Number:2020:56
Number of Pages:118
Publisher:Department of Molecular Sciences, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-7760-630-7
ISBN for electronic version:978-91-7760-631-4
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Article category:Other scientific
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 104 Chemical Sciences > Inorganic Chemistry
(A) Swedish standard research categories 2011 > 2 Engineering and Technology > 210 Nano Technology > Nano Technology
Keywords:Titania, Nanocellulose, Nanomaterials, Hybrid materials, Biomaterials, Drug delivery, Coordination chemistry, MTSAL, Photocatalysis
URN:NBN:urn:nbn:se:slu:epsilon-p-108223
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-108223
ID Code:17878
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Department of Molecular Sciences
Deposited By: SLUpub Connector
Deposited On:26 Oct 2020 10:40
Metadata Last Modified:26 Oct 2020 14:02

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