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Synthesis and Characterization of Sm2O3 Nanocrystallites Dispersed in

Silica Useful for Biomedical Appliances

Neelam Rani, Rachna Ahlawat, Bindiya Goswami

Department of Physics, Material Science Laboratory,
Chaudhary Devi Lal University, Sirsa-125055 (Haryana), India.

Email of corresponding Author: neelam.rani.sardiwal@gmail.com

ABSTRACT
Samarium doped silica nanopowder have gracefully discovered many applications in

diagnosis of diseases, drug delivery, mechanical therapy and bioimaging. In the current study,
samarium doped silicon oxide nanopowder are synthesized using Sol-Gel technique and

calcined at 300℃ and 600℃. The synthesized nanopowder are characterized by Powder X-
ray method, HR-TEM Microscopy, UV-Visible reflectance spectroscopy, and Fluorescence

spectroscopy. XRD data strongly defines pure cubic phase of samarium oxide nanoparticles

and the crystallite size is found to be around 17 nm for the sample calcined at 600℃. TEM
micrograph displays nanoparticles which are in powder form having spherical structure with

size comparable to that of XRD data. Band gap energy of the samples was evaluated nearly
5.50 and 5.33 respectively for each sample. Fluorescence spectra helps us to find out better

emission in composition of violet-indigo, indigo-blue and blue-green region under low
absorption phenomenon. In particular, to fight the COVID-19 pandemic, recent research has

shown that samarium doped silica nanopowder is very effectful in diagnose appliances.

Keywords: XRD, Sm2O3 nanocrystallites, UV-Vis absorption, Fluorescence, etc.
INTRODUCTION

Molecular imaging is fetching more and more information in diagnose the diseases present in
living tissues and other biological structures. This type of interaction is done by x-ray,

ultrasound, illumination, and electromagnetic radiation [1-2]. The obtained output can be

transferred to detector, which is then supported into the computing machine as like computer.
Further, the computing machine producing the morphology and structure info of living

tissues and organs [3]. From last decades, nanotechnology comprises the advanced nano-
sized materials and appliances at large extent. Remarkably, nano-sized metallic particles have

taken up key position because of their easy and simple synthesis, powerful surface chemistry,

low injuriousness, and mutable properties like as optical, mechanical, and stability of
chemicals [4]. Nanotechnology allows the expansion of multifunctional medicine through

nanocrystalline materials which further enables for multi-modal imaging and diagnosis

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