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Silica covered stannic oxide nanoparticles - an easily prepared robust substrate for optical sensors.

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This paper describes a facile way to prepare a photophysically inert sensor substrate. Stannic oxide encapsulated silica nanoparticles with average diameters between 30 and 70 nm have been prepared by… Click to show full abstract

This paper describes a facile way to prepare a photophysically inert sensor substrate. Stannic oxide encapsulated silica nanoparticles with average diameters between 30 and 70 nm have been prepared by one-pot reverse-phase emulsion methodology. The constituents and core/shell morphology of the nanoparticles were demonstrated by electron microscopic technology, energy-dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS). X-ray diffraction (XRD) was employed to provide additional constitutional and structural information. It has been shown that nanoparticles prepared by this method are optically clear in suspension. After anchoring optical indicators, this nanoparticle can be utilized as a sensor module both in biology and other analytical areas.

Keywords: silica covered; nanoparticles easily; stannic oxide; oxide nanoparticles; spectroscopy; covered stannic

Journal Title: Nanotechnology
Year Published: 2021

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