A new route for ZIF-8 synthesis and its application in MMM preparation for toluene removal from water using PV process

Rohani, Ramezan; Pakizeh, Majid; Chenar, Mahdi Pourafshari

doi:10.1016/j.cherd.2022.12.019

Cited by 7 publications

(1 citation statement)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The high degree of combinatoriality in the preparation of block copolymers makes it possible to obtain a large number of commercially available polymers with different compositions and properties [ 76 ]. To improve the transport properties, PEBA-based membranes are modified with various particles such as ZnO [ 77 , 78 ], chitosan-wrapped multiwalled carbon nanotubes (CWNTs) [ 79 ], graphene [ 80 ], Aminosilane-Functionalized Zeolite Y [ 66 ], modified multi-walled carbon nanotubes (MWCNTs) [ 81 ], polyethylene glycol (PEG-400) and TiO 2 [ 82 ], covalent organic frameworks (COFs) [ 83 ], MOFs [ 84 , 85 , 86 , 87 ], etc. Particular attention should be paid to MOFs due to their unique characteristics; however, PEBA/MOF membranes are developed mainly for diffusion membrane processes (pervaporation [ 84 , 85 ] and gas separation [ 86 , 87 ]).…”

Section: Introductionmentioning

confidence: 99%

Holmium-Containing Metal-Organic Frameworks as Modifiers for PEBA-Based Membranes

Kuzminova,

Dmitrenko,

Salomatin

et al. 2023

Polymers

View full text Add to dashboard Cite

Recently, there has been an active search for new modifiers to create hybrid polymeric materials for various applications, in particular, membrane technology. One of the topical modifiers is metal-organic frameworks (MOFs), which can significantly alter the characteristics of obtained mixed matrix membranes (MMMs). In this work, new holmium-based MOFs (Ho-MOFs) were synthesized for polyether block amide (PEBA) modification to develop novel MMMs with improved properties. The study of Ho-MOFs, polymers and membranes was carried out by methods of X-ray phase analysis, scanning electron and atomic force microscopies, Fourier transform infrared spectroscopy, low-temperature nitrogen adsorption, dynamic and kinematic viscosity, static and dynamic light scattering, gel permeation chromatography, thermogravimetric analysis and contact angle measurements. Synthesized Ho-MOFs had different X-ray structures, particle forms and sizes depending on the ligand used. To study the effect of Ho-MOF modifier on membrane transport properties, PEBA/Ho-MOFs membrane retention capacity was evaluated in vacuum fourth-stage filtration for dye removal (Congo Red, Fuchsin, Glycine thymol blue, Methylene blue, Eriochrome Black T). Modified membranes demonstrated improved flux and rejection coefficients for dyes containing amino groups: Congo Red, Fuchsin (PEBA/Ho-1,3,5-H3btc membrane possessed optimal properties: 81% and 68% rejection coefficients for Congo Red and Fuchsin filtration, respectively, and 0.7 L/(m2s) flux).

show abstract