Characterization of microstructural and optical CoFe2O4/SiO2 ferrite nanocomposite for photodegradation of methylene blue

Muhammad Yakob; Hamdani Umar; Puji Wahyuningsih; Rachmad Almi Putra; Muhammad Yakob; Hamdani Umar; Puji Wahyuningsih; Rachmad Almi Putra

doi:10.3934/matersci.2019.1.45

AIMS Materials Science

2019, Volume 6, Issue 1: 45-51. doi: 10.3934/matersci.2019.1.45

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Research article

Characterization of microstructural and optical CoFe₂O₄/SiO₂ ferrite nanocomposite for photodegradation of methylene blue

1.
Department of Physics Education, Faculty of Teaching and Education, Universitas Samudra, Kota Langsa, 24416, Indonesia
2.
Department of Mechanical Engineering, Faculty of Engineering, Universitas Samudra, Kota Langsa, 24416, Indonesia
3.
Department of Chemistry, Faculty of Engineering, Universitas Samudra, Kota Langsa, 24416, Indonesia
4.
Department of Physics, Faculty of Engineering, Universitas Samudra, Kota Langsa, 24416, Indonesia

Received: 23 October 2018 Accepted: 07 January 2019 Published: 14 January 2019

In this research, the CoFe₂O₄ and CoFe₂O₄/SiO₂ nanocomposites have been synthesized using the co-precipitation method, and the microstructural properties of the samples were characterized using X-ray diffraction methods (XRD). The photodegradation activity of methylene blue for both nanocomposites were also investigated. The XRD pattern of CoFe₂O₄/SiO₂ nanocomposites revealed that the sample was polycrystalline and had a spinel crystal structure with group space of Fd3m. The size of crystallite nanoparticle is 29.4 ± 0.2 nm for CoFe₂O₄/SiO₂ and 26.8 ± 0.2 nm for CoFe₂O₄. The CoFe₂O₄/SiO₂ nanocomposites have smaller optical band gap compared to bare CoFe₂O₄ due to smaller surface defect and larger particles size. The CoFe₂O₄/SiO₂ nanocomposites showed a more energetic photodegradation activity of methylene blue than CoFe₂O₄. The encapsulation of the SiO₂ matrix on the surface CoFe₂O₄ nanoparticles enhances the photodegradation activity. Based on the result, nanocomposites CoFe₂O₄/SiO₂ and CoFe₂O₄ are prospective as nano-photocatalyst and nano-adsorbent for organic pollutants.
- characterization,
- dye,
- microstructural,
- optical,
- photocatalyst
Citation: Muhammad Yakob, Hamdani Umar, Puji Wahyuningsih, Rachmad Almi Putra. Characterization of microstructural and optical CoFe2O4/SiO2 ferrite nanocomposite for photodegradation of methylene blue[J]. AIMS Materials Science, 2019, 6(1): 45-51. doi: 10.3934/matersci.2019.1.45

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Abstract

In this research, the CoFe₂O₄ and CoFe₂O₄/SiO₂ nanocomposites have been synthesized using the co-precipitation method, and the microstructural properties of the samples were characterized using X-ray diffraction methods (XRD). The photodegradation activity of methylene blue for both nanocomposites were also investigated. The XRD pattern of CoFe₂O₄/SiO₂ nanocomposites revealed that the sample was polycrystalline and had a spinel crystal structure with group space of Fd3m. The size of crystallite nanoparticle is 29.4 ± 0.2 nm for CoFe₂O₄/SiO₂ and 26.8 ± 0.2 nm for CoFe₂O₄. The CoFe₂O₄/SiO₂ nanocomposites have smaller optical band gap compared to bare CoFe₂O₄ due to smaller surface defect and larger particles size. The CoFe₂O₄/SiO₂ nanocomposites showed a more energetic photodegradation activity of methylene blue than CoFe₂O₄. The encapsulation of the SiO₂ matrix on the surface CoFe₂O₄ nanoparticles enhances the photodegradation activity. Based on the result, nanocomposites CoFe₂O₄/SiO₂ and CoFe₂O₄ are prospective as nano-photocatalyst and nano-adsorbent for organic pollutants.

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