Novel Mixed Matrix Membranes Based on Polymer of Intrinsic Microporosity PIM-1 Modified with Metal-Organic Frameworks for Removal of Heavy Metal Ions and Food Dyes by Nanofiltration
Anna Kuzminova,
Mariia Dmitrenko,
Andrey Zolotarev,
Aleksandra Korniak,
Daria Poloneeva,
Artem Selyutin,
Alexei Emeline,
Alexey Yushkin,
Andrew Foster,
Peter Budd,
Sergey Ermakov
Affiliations
Anna Kuzminova
St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia
Mariia Dmitrenko
St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia
Andrey Zolotarev
St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia
Aleksandra Korniak
St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia
Daria Poloneeva
St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia
Artem Selyutin
St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia
Alexei Emeline
St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia
Alexey Yushkin
A. V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Prospekt, 119991 Moscow, Russia
Andrew Foster
Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
Peter Budd
Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
Sergey Ermakov
St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia
Nowadays, nanofiltration is widely used for water treatment due to its advantages, such as energy-saving, sustainability, high efficiency, and compact equipment. In the present work, novel nanofiltration membranes based on the polymer of intrinsic microporosity PIM-1 modified by metal-organic frameworks (MOFs)—MIL-140A and MIL-125—were developed to increase nanofiltration efficiency for the removal of heavy metal ions and dyes. The structural and physicochemical properties of the developed PIM-1 and PIM-1/MOFs membranes were studied by the spectroscopic technique (FTIR), microscopic methods (SEM and AFM), and contact angle measurement. Transport properties of the developed PIM-1 and PIM-1/MOFs membranes were evaluated in the nanofiltration of the model and real mixtures containing food dyes and heavy metal ions. It was found that the introduction of MOFs (MIL-140A and MIL-125) led to an increase in membrane permeability. It was demonstrated that the membranes could be used to remove and concentrate the food dyes and heavy metal ions from model and real mixtures.
