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Effect of Calcination Temperature on the Magnetic Characteristics of Synthetic Iron Oxide Magnetic Nanoparticles for Arsenic Adsorption
Paper Type  |
Contributed Paper |
Title |
Effect of Calcination Temperature on the Magnetic Characteristics of Synthetic Iron Oxide Magnetic Nanoparticles for Arsenic Adsorption |
Author |
Nucharee Chomchoey, Darunee Bhongsuwan and Tripob Bhongsuwan |
Email |
tripop.b@psu.ac.th |
|
Abstract: The effects of calcination temperature on the magnetic characteristics of iron oxide magnetic nanoparticles (MNPs) for arsenic adsorption were explored in this study. The MNPs were synthesized by precipitation from a ferrous / ferric chloride solution, and a heat treatment at temperatures of 80-700°C. Magnetic characteristics, XRD and FTIR analyses indicate that the MNPs treated at 80°C were predominantly magnetite with less abundant goethite, while calcination at 200-500°C showed a magnetite/maghemite mixture, and hematite at 600-700°C. The crystallite sizes of the MNPs prepared at 350°C and 700°C were estimated at 18.5 and 27.6 nm, respectively. The highest As(III) adsorption capacity was 46 mg/g for the MNPs calcined at 80°C, and decreased to 15 mg/g for the MNPs calcined at 700°C. The result indicates that heat treatment at 350°C is observed to be maximum for preparation of the MNPs with the As(III) adsorption capacity of more than 40 mg/g. |
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Start & End Page |
528 - 539 |
Received Date |
2015-11-28 |
Revised Date |
|
Accepted Date |
2016-07-26 |
Full Text |
Download |
Keyword |
iron oxide, magnetic nanoparticles, arsenic adsorption, magnetite, maghemite, hematite |
Volume |
Vol.45 No.1 (January 2018) |
DOI |
|
Citation |
Chomchoey N., Bhongsuwan D. and Bhongsuwan T., Effect of Calcination Temperature on the Magnetic Characteristics of Synthetic Iron Oxide Magnetic Nanoparticles for Arsenic Adsorption, Chiang Mai Journal of Science, 2018; 45(1): 528-539. |
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