Oxidation of carbon nanotubes using for Cu(II) adsorption from aqueous solution
Tập 128 Số 1B (2019), Nghiên cứu
Tập 128 Số 1B (2019)

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

Nghiên cứu
https://doi.org/10.26459/hueuni-jns.v128i1B.5216
Đã xuất bản 2019-06-06
Nguyen Duc Vu Quyen
Chemistry Department, Hue University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
Tran Ngoc Tuyen
Chemistry Department, Hue University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
Dinh Quang Khieu
Chemistry Department, Hue University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
Dang Xuan Tin
Chemistry Department, Hue University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
Bui Thi Hoang Diem
Chemistry Department, Hue University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
Nguyen Thi My Tinh
Chemistry Department, Hue University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
Pham Thi Ngoc Lan
V Central Transportation Community College, 28 Ngo Xuan Thu St., Danang, Vietnam

Tóm tắt

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
PDF (English)

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