Nickel doping effect on structure and ac conductivity of resorcinol formaldehyde/SiO 2 -Ni nanocomposites synthesized by
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Nickel doping effect on structure and ac conductivity of resorcinol formaldehyde/SiO2-Ni nanocomposites synthesized by sol–gel process Soumaya Gouadria1,2, Maha M. Almoneef1,*, Marzook Saleh Alshammari3, Amal Faleh Alanazi3, and K. Omri2,4,* 1
Department of Physics, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia Laboratory of Physics of Materials and Nanomaterial’s Applied at Environment (LaPhyMNE), Faculty of Sciences, Gabes University, Cite Erriagh Manara Zrig, 6072 Gabès, Tunisia 3 The National Center for Electonics and Photonics, King Abdulaziz City for Science and Technology, KACST, P.O Box 6086, Riyadh 11442, Saudi Arabia 4 Sajir College of Science and Arts, Shaqra University, Shaqra, Saudi Arabia 2
Received: 22 August 2020
ABSTRACT
Accepted: 13 October 2020
The sol–gel synthesis of silica/carbon nanocomposite was modified with nickel in order to enhance the dispersion of silica nano-powder in the carbon matrix. The synthesized doped nanocomposite RF/SiO2-Ni5% (S-RF) is composed of carbon matrix based on resorcinol formaldehyde (RF) as observed in the X-ray diffraction patterns and by scanning electron microscopy characterization. The average sizes of the crystallite of the S-RF are presented in the 13–17 nm range. FTIR Spectroscopy analysis showed that the band at just about 1040 cm-1 is associated to vibrations of Si–O–Si. The addition of nickel improves the interaction between the matrix and the nanoparticles, which appears well at 1100 °C. Moreover, the influences of the doping of Ni in the S-RF nanocomposite were analyzed.
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Springer Science+Business
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1 Introduction In scientific and industrial fields, we find that inorganic/organic composites have played an important role thanks to their unique properties [1, 2]. These composites for which at least one of the constituents is on a nanometric scale have the advantages of organic and inorganic materials and offer excellent properties, in particular thermal, mechanical, optical
and electrical properties. In fact, a small amount of reinforcement may be sufficient to obtain an observable effect on the macroscopic properties of the composite material [3–7]. The sol–gel method is used to have a good dispersion on the nanometric scale of organic and inorganic materials; the method of development used is flexible and has high thermal stability and optical transparency [8]. The different fields of application of these composites are
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https://doi.org/10.1007/s10854-020-04667-y
J Mater Sci: Mater Electron
diagnostic, drug delivery systems, coatings and catalysis [5–10]. Several metallic materials, such as iron, nickel, and cobalt, were incorporated into the nanocomposite solution to exhibit electrical properties in the non-doped nanocomposites [11–13]. Due to their comparable activity and low cost to noble metal, catalysts on breaking C–C bonds, the removal of tar from biomass has been presented b
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