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Layer-by-layer preparation and characterization of recyclable nanocomposite (CoxNi1−xFe2O4; X = 0.9/SiO2/TiO2)

  • M. Abd ElkodousEmail author
  • Gharieb S. El-Sayyad
  • AbdElrahman E. Mohamed
  • K. PalEmail author
  • N. Asthana
  • F. Gomes de Souza Junior
  • Farag M. Mosallam
  • Mohamed Gobara
  • Ahmed I. El-Batal
Article
  • 78 Downloads

Abstract

Titanium dioxide (TiO2) nanocomposites have been extensively employed in many fundamental optoelectronic and photocatalytic applications due to their outstanding optical, electronic and chemical properties. In the present work, we introduce a simple layer-by-layer approach to design a magnetic TiO2 nanocomposite that could be easily recycled using an external magnetic field without affecting its quantum efficiency. The crystallinity, size, surface area, stability, morphology, purity and other optical, thermal and magnetic properties of the composite have been investigated. Surface topology, thickness and thermal conduction were also demonstrated by AC conductivity measurements at a specific temperature (55 °C). Our results revealed that the prepared composite has a semi-spherical concentric shape with an average size of about (123.4 nm), surface area of (46.13 m2/g) and zeta potential of (− 24.3 mV) as confirmed by HRTEM, surface area analyzer and zeta potential measurements. TGA and DSC analysis recorded the thermal stability of the composite up to (500 °C) while a band gap of about (3.35 eV) has been calculated. VSM analysis showed that the composite has good magnetic properties. Atomic force microscopy recorded a surface roughness of the composite of about (125 nm) while the average thickness was approximately (10.3 nm). Significant responses of the capacitance–voltage profiles in the employed Preisach model, have been also recorded.

Notes

Acknowledgements

The authors would like to acknowledge the technical support from Nile University, Egypt Egyptian Atomic Energy Authority and Bharath Institute of Higher Education and Research, Department of Nanotechnology, Chennai (India). The authors also appreciate the efforts exerted by Prof. Dr. Ahmed Radwan, Director of Research at Nile University, Egypt for providing us a friendly environment for research and the success of this work.

Compliance with ethical standards

Conflict of interest

All the authors have declared that there is no potential conflict of interest.

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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • M. Abd Elkodous
    • 1
    Email author
  • Gharieb S. El-Sayyad
    • 2
  • AbdElrahman E. Mohamed
    • 3
  • K. Pal
    • 4
    Email author
  • N. Asthana
    • 5
  • F. Gomes de Souza Junior
    • 6
  • Farag M. Mosallam
    • 2
  • Mohamed Gobara
    • 7
  • Ahmed I. El-Batal
    • 2
  1. 1.School of Engineering and Applied Sciences, Center for Nanotechnology (CNT)Nile UniversitySheikh ZayedEgypt
  2. 2.Drug Microbiology Lab, Drug Radiation Research DepartmentNational Center for Radiation Research and Technology (NCRRT), Atomic Energy AuthorityCairoEgypt
  3. 3.Chemistry Department, Faculty of ScienceAin Shams UniversityCairoEgypt
  4. 4.Department of Nanotechnology, BIHER Research ParkBharath UniversityChennaiIndia
  5. 5.National Centre of Exp. Mineralogy and PetrologyUniversity of AllahabadAllahabadIndia
  6. 6.Instituto de Macromoléculas: Professora Eloisa Mano, Centro de Tecnologia- CidadeUniversitáriaUniversidade Federal Rio de JaneiroRio de JaneiroBrazil
  7. 7.Chemical Engineering DepartmentMilitary Technical College, Egyptian Armed ForcesCairoEgypt

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