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Polymers
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Cross-linked Polymers for Metals ions Removal or Concentration of Noble/Rare...
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Cross-linked Polymers for Metals ions Removal or Concentration of Noble/Rare Metals

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Analysis and Characterization".

Deadline for manuscript submissions: closed (25 April 2021) | Viewed by 6338

Special Issue Editor

Dr. Dmitriy Berillo

E-Mail Website
Guest Editor
School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton BN2 4GJ, UK
Interests: synthesis of functional porous polymer gels; hybrid polymer-inorganic and nanocomposite materials; smart polymeric systems; biomaterials; drug delivery systems; metal nanoparticles; click chemistry and synthetic organic chemistry; novel porous materials for contaminated water remediation

Special Issue Information

Dear Colleagues,

This year marks 100 years of polymer chemistry science. Polymers have attracted enormous attention from various experts, from scientists and engineers to those working in food, textile and heavy industry etc. Functional polymers have a great potential to manage many global ecological challenges in areas such as the removal of heavy metals, dyes and toxic contaminants.

 This issue contains a collection of research papers related to heavy metal removal via ligand exchange mechanism (chelation) and ion exchange; polymeric systems acceptable for selective or nonselective extraction of noble metal ions from diluted solutions using smart polymers (molecular imprinted polymers, polymeric membranes, polyelectrolytes).

 

Topics:

  • Methods of extraction of metal nanoparticles or metal oxide nanoparticles
  • Nontoxic modified cross-linked polymers for the selective removal of harmful ions from biological fluids
  • Methods of regeneration of polymeric systems, as well as methods of utilization of polymers after the adsorption of metals
  • Smart polymers used for the desalination of sea water
  • Effect of adsorption of metals on mechanical properties of polymers
  • Polymers with given properties applicable for efficient radionuclides separation or extraction
  • Composite polymer-metal systems for energy storage and catalysis

Dr. Dmitriy Berillo
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • cryogels
  • polyelectrolyte complexes
  • ligand exchange
  • amphoteric polymers
  • zwitterionic polymers
  • heavy metals
  • metal nanoparticles
  • metal oxide nanoparticles
  • hydrogels
  • smart polymers

Published Papers (2 papers)

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Research

17 pages, 3535 KiB  
Article
Constructing Positively Charged Thin-Film Nanocomposite Nanofiltration Membranes with Enhanced Performance
by Wenyao Shao, Chenran Liu, Tong Yu, Ying Xiong, Zhuan Hong and Quanling Xie
Polymers 2020, 12(11), 2526; https://doi.org/10.3390/polym12112526 - 29 Oct 2020
Cited by 22 | Viewed by 2861
Abstract
Using polyethylenimine (PEI) as the aqueous reactive monomers, a positively charged thin-film nanocomposite (TFN) nanofiltration (NF) membrane with enhanced performance was developed by successfully incorporating graphene oxide (GO) into the active layer. The effects of GO concentrations on the surface roughness, water contact [...] Read more.
Using polyethylenimine (PEI) as the aqueous reactive monomers, a positively charged thin-film nanocomposite (TFN) nanofiltration (NF) membrane with enhanced performance was developed by successfully incorporating graphene oxide (GO) into the active layer. The effects of GO concentrations on the surface roughness, water contact angle, water flux, salt rejection, heavy metal removals, antifouling property, and chlorine resistance of the TFN membranes were evaluated in depth. The addition of 20 ppm GO facilitated the formation of thin, smooth, and hydrophilic nanocomposite active layers. Thus, the TFN-PEI-GO-20 membrane showed the optimal water flux of 70.3 L·m−2·h−1 without a loss of salt rejection, which was 36.8% higher than the thin-film composite (TFC) blank membrane. More importantly, owing to the positively charged surfaces, both the TFC-PEI-blank and TFN-PEI-GO membranes exhibited excellent rejections toward various heavy metal ions including Zn2+, Cd2+, Cu2+, Ni2+, and Pb2+. Additionally, compared with the negatively charged polypiperazine amide NF membrane, both the TFC-PEI-blank and TFN-PEI-GO-20 membranes demonstrated superior antifouling performance toward the cationic surfactants and basic protein due to their hydrophilic, smooth, and positively charged surface. Moreover, the TFN-PEI-GO membranes presented the improved chlorine resistances with the increasing GO concentration. Full article
(This article belongs to the Special Issue Cross-linked Polymers for Metals ions Removal or Concentration of Noble/Rare Metals)
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19 pages, 5433 KiB  
Article
Removal of Cd2+ from Water by Use of Super-Macroporous Cryogels and Comparison to Commercial Adsorbents
by Alzhan Baimenov, Dmitriy Berillo, Seitkhan Azat, Talgat Nurgozhin and Vassilis Inglezakis
Polymers 2020, 12(10), 2405; https://doi.org/10.3390/polym12102405 - 19 Oct 2020
Cited by 21 | Viewed by 2470
Abstract
In this study amphoteric cryogels were synthesized by the use of free-radical co-polymerization of acrylate-based precursors (methacrylic acid and 2-acrylamido-2-methyl-1-propansulfonic acid) with allylamine at different ratios. The physico-chemical characteristics of the cryogels were examined using SEM/EDX, FT-IR, XPS and zeta potential measurements. The [...] Read more.
In this study amphoteric cryogels were synthesized by the use of free-radical co-polymerization of acrylate-based precursors (methacrylic acid and 2-acrylamido-2-methyl-1-propansulfonic acid) with allylamine at different ratios. The physico-chemical characteristics of the cryogels were examined using SEM/EDX, FT-IR, XPS and zeta potential measurements. The cryogels were tested toward Cd2+ removal from aqueous solutions at various pH and initial concentrations. Equilibrium studies revealed a maximum sorption capacity in the range of 132–249 mg/g. Leaching experiments indicated the stability of Cd2+ in the cryogel structure. Based on kinetics, equilibrium and characterization results, possible removal mechanisms are proposed, indicating a combination of ion exchange and complexation of Cd2+ with the cryogels’ surface functional groups. The cryogels were compared to commercially available adsorbents (zeolite Y and cation exchange resin) for the removal of Cd2+ from various water matrices (ultrapure water, tap water and river water) and the results showed that, under the experimental conditions used, the cryogels can be more effective adsorbents. Full article
(This article belongs to the Special Issue Cross-linked Polymers for Metals ions Removal or Concentration of Noble/Rare Metals)
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