Statistical optimization and selective uptake of Au(III) from aqueous solution using carbon nanotube-cellulose based adsorbent. (March 2022)

• Record Type: Journal Article
• Authors: Birtane, Hatice; Urucu, Oya Aydın; Yıldız, Nilgün; Çiğil, Aslı Beyler; Kahraman, Memet Vezir
• Is Part Of: Materials today communications. Volume 30(2022)
• Publication Date: 2022-03
• Subjects: Au (III) -- Uptake -- Carbon nanotube -- Thiol-ene click -- Photo-curable -- Box-Behnken design; Materials science -- Periodicals; 620.11
• DOI: 10.1016/j.mtcomm.2022.103144
• Languages: English
• ISSNs: 2352-4928

Abstract

Abstract: In this study, a carbon nanotube cellulose-based UV-curable nanocomposite was prepared as an adsorbent to selectively separate Au (III) ions from an aqueous medium. For this purpose, thiol-functionalized carbon nanotube and acrylate-functionalized hydroxyethyl cellulose were synthesized and the photo-curable adsorbent was obtained using the thiol-ene click reaction. The FTIR spectra revealed that the thiol groups and acrylate groups were successfully attached to carbon nanotube and hydroxyethyl cellulose, respectively. Moreover, the Scanning Electron Microscopy-Energy Dispersive X-Ray analyses showed that the photo-curable adsorbent contained sulfur atoms, thus indicating successful modification. The parameters affecting the recovery of the Au (III) ions were determined using the Plackett-Burman method. The optimum values of the parameters, which were pH, adsorption time, initial Au (III) concentration, and adsorbent amount were determined using the Box-Behnken method. The Langmuir adsorption isotherm was determined to be the best equation to describe the interaction of the Au (III) ions with the adsorbent (R 2 : 0.995). The examination of the effectiveness of the photo-curable adsorbent in the presence of different metal ions yielded prosperous results. Also, the developed method has been successfully applied for the recovery of Au(III) ions in river waters.