Synthesis of titania nanoparticles in W/O microemulsion: moving the production toward a green approach

Eleonora Marconi, Luca Tortora

Abstract

In this work, we report an easy, fast, reproducible, and low-temperature microemulsion procedure for the large-scale production of titania nanoparticles (NPs). The synthesis involves a polycondensation reaction of alkoxide precursors during the heating at 70 °C. A W/O microemulsion with a volume ratio of 1:1 was obtained using cetylpyridinium bromide (CPB) as a cationic surfactant. Structural and functional characterization of the samples was conducted using X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The photoactivity of the nanostructured titania was evaluated by measuring the photodegradation of Methylene blue (MB). The results indicate that the photoactivity depends on the sinterization grade of the titania nanoparticles. Commercial titania nanoparticles (P25) were used as a reference material commonly employed for coating stone protection in the field of Cultural Heritage Conservation.

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IMEKO-MetroArchaeo-2023-091.pdf

DOI

10.21014/tc4-ARC-2023.091

IMEKO TC

TC4 - Measurement of Electrical Quantities

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