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Synthesis and characterization of Ni NPs-doped silica-titania nanocomposites: structural, optical and photocatalytic properties

Islam, S. and Bidin, N. and Osman, S. S. and Krishnan, G. and Salim, A. A. and Riaz, S. and Suan, L. P. and Naseem, S. and Sanagi, M. M. (2017) Synthesis and characterization of Ni NPs-doped silica-titania nanocomposites: structural, optical and photocatalytic properties. Applied Physics A-Materials Science & Processing, 123 (1). ISSN 0947-8396

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Official URL: http://dx.doi.org/10.1007%2Fs00339-016-0685-4

Abstract

The synthesis of Ni-doped silica–titania nanocomposite is performed by sol–gel method. The samples prior and after heat treatment at 300 °C for 1 h are characterized by analytical instrumental techniques. FE-SEM and AFM results indicate the regular morphology with low surface roughness without any cracks. EDX analysis verifies the formation of nanocomposites. XRD of the films reveals crystalline titania phases after annealing at 300 °C. The FTIR confirms the bond linkage between silica, titania and nickel molecules. High surface area ~155 m2/g, pore volume of 0.2 cm3/g and pore diameter of 48.10 Å are obtained after heat treatment. The magnetic results show that the composite content is reminiscent of ferromagnetic hysteresis loop, with remanence magnetization Mr of 45.35 and 13.20 emu/g for both samples. The organic dye phenol red is used for the evaluation of photocatalytic activity of the synthesized magnetic material. The homogeneous surface morphology, crystalline nature, good solubility of magnetic nanoparticles into the silica–titania matrix show that the Ni/SiO2–TiO2 magnetic photocatalyst can be efficient and reusable.

Item Type:Article
Uncontrolled Keywords:photocatalytic activity, cetyl trimethyl ammonium bromide, semiconductor photocatalyst
Subjects:Q Science > Q Science (General)
Divisions:Science
ID Code:80324
Deposited By: Narimah Nawil
Deposited On:10 May 2019 15:14
Last Modified:10 May 2019 15:14

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