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Efficient Removal of Dyes and Proteins by Nitrogen-Doped Porous Graphene Blended Polyethersulfone Nanocomposite Membranes Publisher Pubmed



Vatanpour V1 ; Mousavi Khadem SS2 ; Dehqan A1 ; Alnaqshabandi MA3 ; Ganjali MR2, 4, 5 ; Sadegh Hassani S6 ; Rashid MR7 ; Saeb MR2 ; Dizge N8
Authors
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Authors Affiliations
  1. 1. Department of Applied Chemistry, Faculty of Chemistry, Kharazmi University, Tehran, 15719-14911, Iran
  2. 2. Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran, Iran
  3. 3. Soran University, Department of General Science, Kawa Street, Soran, Kurdistan Region, Iraq
  4. 4. School of Resources and Environment, University of Electronic Science and Technology of China, P.O. Box 611731 Xiyuan Ave, Chengdu, China
  5. 5. Biosensor Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
  6. 6. Catalysis Research Division, Research Institute of Petroleum Industry (RIPI), West Blvd. Azadi Sport Complex, P.O. Box 14665-137, Tehran, Iran
  7. 7. Nanotechnology Research Center, Research Institute of Petroleum Industry (RIPI), West Blvd. Azadi Sport Complex, P.O. Box 14665-137, Tehran, Iran
  8. 8. Department of Environmental Engineering, Mersin University, Mersin, 33343, Turkey

Source: Chemosphere Published:2021


Abstract

Nitrogen-doped porous graphene oxide (N-PGO) was synthesized, characterized, and applied as a hydrophilic nanomaterial in fabrication of polyethersulfone (PES) membrane for Reactive Red 195 dye and bovine serum albumin (BSA) protein separation. The N-PGO nanosheets not merely showed a good adhesion towards polymers, but simultaneously promoted hydrogen bonding action. Therefore, high-efficiency permeation passageway in the separation layer of membranes was attained. X-ray photoelectron spectroscopy (XPS), energy dispersive spectroscopy (EDX) and Fourier transform infra-red spectroscopy (FTIR) analyses approved nitrogen doping, which increased hydrophilicity and hydrogen bonding ability of PGO in water filtration. The pure water permeation of nanocomposite membranes could reach as high as 190 L m−2 h−1 at 3 bar. A dye rejection efficiency higher than 92% and BSA rejection higher than 95% were accordingly obtained. Atomic force microscopy (AFM) images approved formation of a rough surface that was decreased by addition of low amounts of the PGO. SEM images provided from the surface also confirmed enlarged pore size and increased porosity. Antifouling properties were investigated by BSA filtration, and results showed that the flux recovery ratio of the N-PGO membrane was improved. Overall, the N-PGO hybrid membranes exhibited potential for application in separation of typical proteins and dyes with good antifouling properties. © 2020 Elsevier Ltd
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