Improved Dye Adsorption Performance of UiO-66 by Hybridization with Nanodiamond
Paper ID : 1483-ICNS
Authors:
Milad Neshastehgar *1, Pooria Rahmani2, Hossein Molavi3, Akbar Shojaei4
1Department of Chemical engineering, Sharif University of technology, Tehran, Iran
2Department of Chemical Engineering, Sharif University of Technology, Tehran, Iran
3Department of Chemical engineering, Sharif University of Technology, Tehran, Iran
4Department of Chemical Engineering, Sharif University of Technology, P.O. Box 11155-9465, Tehran, Iran
Abstract:
The major challenge in wastewater treatment by adsorbent materials is time-consuming adsorption processes because of the small adsorption constant rate and low adsorption capacity of conventional adsorbent materials. The present work illustrates that this challenge can be overcome by utilizing a nanocomposite based on UiO-66 as a physicochemical stable metal-organic framework (MOF) and oxidized nanodiamond (OND). This composite was synthesized and used as adsorbent for adsorption of anionic dyes (Methyl red, MR and Methyl orange, MO) and cationic dyes (Malachite green, MG and Methylene blue, MB) from contaminated water. The pure adsorbents and their nanocomposite were characterized by FESEM, XRD, BET, and zeta potential measurement. The experimental adsorption results displayed that the synthesized nanocomposite presented higher adsorption capacity for anionic MR, and MO dyes compared to cationic MB and MG dyes. Additionally, the obtained results indicate that the performance of pure UiO-66 increased by hybridization with OND. The OND-UiO-3 nanoparticles displayed an increase of 532% in MR adsorption capacity and an increase of 11900% in removal rate compared to the parent UiO-66 nanoparticles.
Keywords:
Metal-Organic Framework; UiO-66; Selective adsorption; Nanodiamond; Nanocomposite.
Status : Abstract Accepted (Poster Presentation)