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- W2619714306 abstract "With the increased use of manufactured nanomaterials (MNMs) and increased environmental and human exposure, nanosafety has become a major research objective. This field has yet to advance due to challenges in systematically linking physicochemical properties to toxicity. The aim of this work was to develop a library of comparable NMs and study their behaviour and ageing in different scenarios. A library of metal oxide NMs based on a PVP capped ceria synthesis protocol was developed and extensively characterised. The protocol was successfully modified to produce PVP capped zinc oxide and copper oxide NMs, of comparable sizes. These NMs along with commercial uncoated ceria NMs were subjected to time and temperature dependent studies. The work studied the transformations occurring on exposure to 25, 45, 65 and 80 °C temperatures for 4 weeks. Results showed increased aggregation, changes in metal valency state and decreased stability with increasing temperature and time. Finally the potential phosphate induced environmental transformation of ceria was studied for the ceria library NMs, the commercial ceria NM and a series of zirconium doped ceria NMs. Samples were exposured to pH-adjusted phosphatisation solutions. Ceria and ceria-rich samples underwent physical and chemical transformations. Furthermore the commercial ceria was exposed to a pH-adjusted phospholipid containing phosphatisation solution where no characteristic phosphate ageing transformations were observed." @default.
- W2619714306 created "2017-06-05" @default.
- W2619714306 creator A5005505470 @default.
- W2619714306 date "2017-07-01" @default.
- W2619714306 modified "2023-09-26" @default.
- W2619714306 title "Synthesis and ageing transformations of manufactured metal oxide nanomaterials" @default.
- W2619714306 hasPublicationYear "2017" @default.
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