Studies on structural and optical properties of pure and transition metals (Ni, Fe and co-doped Ni–Fe) doped tin oxide (SnO2) nanoparticles for anti-microbial activity

  • T. Amutha
  • M. Rameshbabu
  • S. Sasi Florence
  • N. Senthilkumar
  • I. Vetha Potheher
  • K. PrabhaEmail author


In this present work, pure and transition metal ions (Ni, Fe and co-doped Ni–Fe) doped SnO2 nanoparticles (NPs) were synthesized using a simple chemical co-precipitation method. Transition metal ions (Ni, Fe and co-doped Ni–Fe) were doped in order to study the influence of structural and optical properties. The synthesized samples were analyzed by using powder X-ray diffraction, scanning electron microscopy, energy dispersive X-ray analysis, UV–Visible spectroscopy, FT-IR, and photoluminescence spectroscopic techniques. SnO2 crystallites were found to exhibit tetragonal rutile structure with space group P42/mnm (136) with average particle size in the range of 20–30 nm. Also confirmed that all the doped metal ions were incorporated to SnO2. The UV–Vis-NIR spectroscopy revealed a significant red shift in the absorbing band edge due to increase in the amount of Ni, Fe and co-doped Ni–Fe contents. The SEM image shows the morphology of pure and doped (Fe, Ni and Fe–Ni co-doped) SnO2 NPs with large spherical shapes. In FT-IR spectra, the strong peaks are attributed to the antisymmetric stretching mode of O-Sn-O. The PL spectrum exhibits a strong blue emission peak. The antimicrobial studies were investigated against standard bacterial strains and enhanced anti-bacterial activity in doped and co-doped samples was observed, which can be attributed to the ROS and the particles were in the nanoscale regime.


Co-precipitation Co-dopant Antibacterial activity Nanoparticle Photoluminescence 



The authors would like to thank DST-SERB, New Delhi for the financial support under the DST-SERB major research project (Ref. No. SERB/4496/2016-17 dated 24.09.2016) for the successful completion of this research work. Also, thanks to Prof. C. Sanjeeviraja, (Formerly Professor, Dean Science, Alagappa University) Emeritus Scientist, Dept. of Physics, Alagappa Chettiar College of Eng. & Tech., Karaikudi, India for his valuable suggestions for completing this research work.


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© Springer Nature B.V. 2019

Authors and Affiliations

  • T. Amutha
    • 1
  • M. Rameshbabu
    • 2
  • S. Sasi Florence
    • 3
  • N. Senthilkumar
    • 4
  • I. Vetha Potheher
    • 4
  • K. Prabha
    • 1
    Email author
  1. 1.Department of PhysicsMother Teresa Women’s UniversityKodaikanalIndia
  2. 2.Department of PhysicsArulmigu Palaniandavar College of Arts and CulturePalaniIndia
  3. 3.Department of PhysicsJazan UniversityJizanSaudi Arabia
  4. 4.Department of Physics, University College of EngineeringBharathidasan Institute of Technology Campus, Anna UniversityTiruchirappalliIndia

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