Characterization of magnetic biochar amended with silicon dioxide prepared at high temperature calcination

• Autorzy: Baig S. A. , Lou Z. , Hayat M. T. , Fu R. , Liu Y. , Xu X.

Identyfikatory

DOI

10.1515/msp-2016-0112

• Języki publikacji: EN

Abstrakty

EN

Calcination is considered to increase the hardness of composite material and prevent its breakage for the effective applications in environmental remediation. In this study, magnetic biochar amended with silicon dioxide was calcined at high temperature under nitrogen environment and characterized using various techniques. X-ray diffraction (XRD) analysis revealed elimination of Fe₃O₄ peaks under nitrogen calcination and formation of Fe₃Si and iron as major constituents of magnetic biochar-SiO₂ composite, which demonstrated its superparamagnetic behavior (>80 Am²·kg^-1·) comparable to magnetic biochar. Thermogravimetric analysis (TGA) revealed that both calcined samples generated higher residual mass (>96 %) and demonstrated better thermal stability. The presence of various bands in Fourier transform infrared spectroscopy (FT-IR) was more obvious and the elimination of H–O–H bonding was observed at high temperature calcination. In addition, scanning electron microscopy (SEM) images revealed certain morphological variation among the samples and the presence of more prominent internal and external pores, which then judged the surface area and pore volume of samples. Findings from this study suggests that the selective calcination process could cause useful changes in the material composites and can be effectively employed in environmental remediation measures.

Słowa kluczowe

EN

calcination; magnetic biochar; material composite; saturation magnetization

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2016
• Tom: Vol. 34, No. 3
• Strony: 597--604
• Opis fizyczny: Bibliogr. 25 poz., rys., tab.

Twórcy

autor

Baig S. A.

• Department of Environmental Sciences, COMSATS Institute of Information Technology (CIIT), Abbottabad 22060, Pakistan
• Department of Environmental Sciences, Abdul Wali Khan University, Mardan 23200, Pakistan

autor

Lou Z.

• Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, People’s Republic of China

autor

Hayat M. T.

• Department of Environmental Sciences, COMSATS Institute of Information Technology (CIIT), Abbottabad 22060, Pakistan

autor

Fu R.

• Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, People’s Republic of China

autor

Liu Y.

• Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, People’s Republic of China

autor

Xu X.

• Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, People’s Republic of China

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.