Oxidation of carbon nanotubes using for Cu(II) adsorption from aqueous solution
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Keywords

Oxidized carbon nanotubes
CuII adsorption capacity
CuII adsorption
potassium permanganate
oxidized CNTs.

How to Cite

1.
Quyen NDV, Tuyen TN, Khieu DQ, Tin DX, Diem BTH, Tinh NTM, Lan PTN. Oxidation of carbon nanotubes using for Cu(II) adsorption from aqueous solution. hueuni-jns [Internet]. 2019Jun.6 [cited 2024Jun.24];128(1B):5-12. Available from: https://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/5216

Abstract

Carbon nanotubes (CNTs) synthesized by chemical vapour deposition without using hydrogen were oxidized with 0.1 M potassium permanganate at 40oC for 2 hours and exhibited high CuII adsorption capacity from aqueous solution. X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), scanning electron microscope (SEM), transmission electron microscope (TEM) and nitrogen adsorption/desorption isotherms were used to characterize the oxidized CNTs. After oxidizing, the obtained CNTs were used to remove CuII from aqueous solution. With CuII initial concentration of 20 mg.L-1, at pH of 4 and adsorbent dosage of 0.2 g.L-1, the oxidized CNTs exhibited high CuII adsorption ability with maximum adsorption capacity of 174.4 mg.g-1.
https://doi.org/10.26459/hueuni-jns.v128i1B.5216
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