Citation: Saeed Farhadi, Firouzeh Siadatnasab. CoFe₂O₄/CdS nanocomposite: Preparation, characterisation, and application in sonocatalytic degradation of organic dye pollutants[J]. Chinese Journal of Catalysis, ;2016, 37(9): 1487-1495. doi: 10.1016/S1872-2067(16)62473-7 shu

CoFe₂O₄/CdS nanocomposite: Preparation, characterisation, and application in sonocatalytic degradation of organic dye pollutants

Department of Chemistry, Lorestan University, Khoramabad 68135-465, Iran

Received Date: 16 April 2016
Revised Date: 14 May 2016

A magnetic CoFe₂O₄/CdS nanocomposite was prepared via one-step hydrothermal decomposition of cadmium diethanoldithiocarbamate complex on the surface of CoFe₂O₄ nanoparticles at a low temperature of 200℃. The nanocomposite was characterised by X-ray diffraction(XRD), Fourier transform infrared spectroscopy(FT-IR), scanning electron microscopy, energy-dispersive X-ray spectroscopy(EDX), UV-visible spectroscopy, transmission electron microscopy(TEM), N₂ gas sorption analysis, X-ray photoelectron spectroscopy(XPS), and vibrating sample magnetometry. The FT-IR, XRD, EDX and XPS results confirmed the formation of the CoFe₂O₄/CdS nanocomposite. Based on the TEM analysis, the CoFe₂O₄/CdS nanocomposite constituted nearly uniform, sphere-like nanoparticles of ~20 nm in size. The optical absorption spectrum of the CoFe₂O₄/CdS nanocomposite displayed a band gap of 2.21 eV, which made it a suitable candidate for application in sono/photocatalytic degradation of organic pollutants. Accordingly, the sonocatalytic activity of the CoFe₂O₄/CdS nanocomposite was evaluated towards the H₂O₂-assisted degradation of methylene blue, rhodamine B, and methyl orange under ultrasonic irradiation. The nanocomposite displayed excellent sonocatalytic activity towards the degradation of all dyes examined-the dyes were completely decomposed within 5-9 min. Furthermore, a comparison study revealed that the CoFe₂O₄/CdS nanocomposite is a more efficient sonocatalyst than pure CdS; thus, adopting the nanocomposite approach is an excellent means to improve the sonoactivity of CdS. Moreover, the magnetic properties displayed by the CoFe₂O₄/CdS nanocomposite allow easy retrieval of the catalyst from the reaction mixture for subsequent uses.
- CoFe₂O₄/CdS nanocomposite,
- Cadmium dithiocarbamate,
- Hydrothermal decomposition,
- Sonocatalyst,
- Dye degradation
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沈阳化工大学材料科学与工程学院沈阳 110142

CoFe2O4/CdS nanocomposite: Preparation, characterisation, and application in sonocatalytic degradation of organic dye pollutants

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通讯作者: 陈斌, bchen63@163.com

CoFe₂O₄/CdS nanocomposite: Preparation, characterisation, and application in sonocatalytic degradation of organic dye pollutants