Acid-promoted Synthesis of MWCNT/UiO-66-NH2 Nanocomposite for Highly Efficient Removal of Ketoprofen

• Published in: Chemistry letters Vol. 48; no. 4; pp. 394 - 397
• Main Authors: Feng, Sheng, Sun, Jiajia, Feng, Shanshan, Zhang, Zhihui, Wang, Runbai, Liu, Shuguang, Hu, Jiawei
• Format: Journal Article
• Language: English; Japanese
• Published: Tokyo The Chemical Society of Japan 05-04-2019; Chemical Society of Japan
• Subjects: Adsorption; Anchoring; Aqueous solutions; Ethanol; Fourier transforms; Infrared analysis; Ketoprofen; Metal-organic frameworks; Microscopy; Multi wall carbon nanotubes; Nanocomposites; Nanomaterials; Nanoparticles; pH; Porosity; Scanning electron microscopy; Thermogravimetric analysis; Water stability; X ray powder diffraction; Zirconium; MWCNT/UiO-66-NH2; Adsorption; Ketoprofen
• ISSN: 0366-7022; 1348-0715
• DOI: 10.1246/cl.180953

A novel MWCNT/UiO-66-NH2 nanocomposite with high porosity and water stability was fabricated through a facile acid-promoted method, which has high adsorption efficiency for ketoprofen (KET) from aqueous solutions. The nanomaterials were characterized using X-ray powder diffraction (XRD), scanning electron microscopy (SEM), Brunauer-Emmett-Teller theory (BET), thermogravimetric analysis (TGA), Fourier transform infrared (FTIR), transmiassion electron microscopy (TEM) and Zeta potentials to study their structures and functionalities. The as-developed MWCNT/UiO-66-NH2 nanocomposite exhibited excellent adsorption efficiency (over 93% for 40 mg/L ketoprofen) by combining multi-walled carbon nanotubes (MWCNT) with amination of zirconium-based metal organic frameworks (UiO-66-NH2). The adsorption capacity of MWCNT/UiO-66-NH2 was observed to reach up to 233 mg/g for KET. The improved adsorption capacity of MWCNT/UiO-66-NH2 was due to the anchoring technology, which prevented the aggregation of UiO-66-NH2 nanoparticles and increased the effective adsorption surface of the MWCNT/UiO-66-NH2 nanocomposite. The main factors affecting the adsorption process such as time, pH and ionic strength were investigated in detail. Besides, MWCNT/UiO-66-NH2 nanocomposite could be reproduced without significant degradation by means of simple ethanol washing and reused for continuous adsorption. Herein, MWCNT/UiO-66-NH2 nanocomposite showed great potential for effective removal of ketoprofen from water.