Synthesis of nanocrystalline boron ion doped SnO2 and its morphology dependent anti-microbial activity

Authors

• Sujay Munshi ¹
• Solanki Das ²
• Achyutmohan Roychaudhury ²
• Aritra Banerjee ³
• Debtanu Ghosh ⁴
• Partha Chatterjee ⁴
• Apurba Kanti Deb * ¹

1. Department of Physics, Raiganj University, Raiganj, Uttar Dinajpur 733134, India
2. Department of Chemistry, Raiganj University, Raiganj, Uttar Dinajpur 733134, India
3. Department of Physics, University of Calcutta, 92 A P C Road, Kolkata-700 009, India
4. Department of Physics, Vivekananda Mahavidyalaya, Haripal, Hooghly 712405, India

Abstract

Boron doped tin oxide nanocrystals with tetragonal symmetry (space group: P4₂/mnm) were prepared by sol-gel route using three different polyhydroxy alcohols like starch, glycerol and poly vinyl alcohol (PVA). Morphological and structural properties were studied for these samples by using scanning electron microscopy, X-ray powder diffraction, Raman spectroscopy and Fourier transform infrared spectroscopy. The morphology of the as-prepared SnO₂ sample is dependent on the polyhydroxy alcohol used for preparation in sol-gel method and is evident from scanning electron microscopy and X-ray powder diffraction line profile analysis. Detailed characterization for the effects of lower particle dimensions has been explored and existence of oxygen vacancies has been observed for all the samples. Paracrystalline disorder was observed in the SnO­₂ sample prepared in glycerol medium. Boron is present as interstitial BO­₄ and BO₃ unit in crystal lattice. The anti-bacterial efficacy of the boron doped SnO₂ samples is dependent on the crystallite morphology.

Keywords

• Boron ion doped SnO2 nanoparticles
• FTIR; Raman spectroscopy
• X-ray powder diffraction line profile analysis
• Antibacterial activity