Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
5.2
3.4
Journals
Materials
Special Issues
New Compounds, Materials and Extracting Systems...
materials-logo
Submit to Materials Review for Materials Propose a Special Issue

Journal Menu

► Journal Menu

Journal Browser

► Journal Browser
share announcement

New Compounds, Materials and Extracting Systems

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Composites".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 8268

Special Issue Editor

Dr. Karolina Wieszczycka

E-Mail Website
Guest Editor
Institute of Chemical Technology and Engineering, Poznan University of Technology, Poznan, Poland
Interests: design, synthesis, and application of extracting agents for metals separations and recovery
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The design of selective and efficient extractants or extraction systems for capture of organic and inorganic compounds is currently a hot topic in different scientific and technological areas. Especially the use of liquid ion exchangers has given rise to new approaches in the field of hydrometallurgy and in environmental applications. Lipophilic organic compounds showing extraction properties are used not only in a conventional liquid–liquid extraction but also as carriers in supported liquid membranes, emulsion liquid membranes, solvent impregnated resins, and microcapsules with entrapped extractant. Extractant can also be incorporated into solid phase throughout grafting and chemical modification. In removal of organic and inorganic molecules, promising extractants are also ionic liquids, deep eutectic solvents, and biomolecule-based extractant. The discussion cannot omit the extraction of precious biological compounds, which can be conducted using a continuous extraction at aqueous two-phase systems, supercritical extraction, and solid phase extraction.

This Special Issue, “New Compounds, Materials and Extracting systems”, will be a collection of full papers, short communications and review papers focusing on recent progress in applications of novel extracting agents, materials, and aqueous two-phase extraction systems with promising potential in the purification, separation, and isolation of organic and inorganic compounds.

Dr. Karolina Wieszczycka
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. Materials 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 2600 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

  • Novel extractant
  • Deep eutectic solvent
  • Ionic liquid
  • Biomolecule-based extractant
  • Organic–inorganic hybrid materials
  • Impregnated resin
  • Microcapsules
  • Liquid ion exchanger
  • Solid phase extraction
  • Supported membranes

Published Papers (4 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

17 pages, 3292 KiB  
Article
Novel Polymer Sorbents with Imprinted Task-Specific Ionic Liquids for Metal Removal
by Kinga Filipowiak, Patrycja Dudzińska, Karolina Wieszczycka, Tomasz Buchwald, Marek Nowicki, Aneta Lewandowska and Agnieszka Marcinkowska
Materials 2021, 14(17), 5008; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14175008 - 02 Sep 2021
Cited by 5 | Viewed by 2017
Abstract
In this paper, the potential of novel polymer sorbents with the imprinted IL-functional group for the removal of Cu(II), Cd(II), and Zn(II) from aqueous solutions was investigated by batch mode. The sorbents were fabricated by direct reaction of the prepared polymer matrix (poly(vinylbenzyl [...] Read more.
In this paper, the potential of novel polymer sorbents with the imprinted IL-functional group for the removal of Cu(II), Cd(II), and Zn(II) from aqueous solutions was investigated by batch mode. The sorbents were fabricated by direct reaction of the prepared polymer matrix (poly(vinylbenzyl chloride-divinylbenzene), VBC, and poly(vinylbenzyl bromide-divinylbenzene), VBBr) with 1-(3- or 4-pyridyl)undecan-1-one and oxime of 1-(3- or 4-pyridyl)undecan-1-one. The Fourier Transform Infrared Spectroscopy (FT-IR), Raman Spectroscopy (Raman), Thermogravimetric Analysis (TG), Differential Scanning Calorimetry (DSC), and Scanning Electron Microscopy (SEM) techniques were used to show functionality and stability of the sorbents. The materials were also characterized by contact-angle goniometry, X-rayphotoelectron spectroscopy (XPS), and Zeta potential analysis. The removal of Cd(II), Cu(II), and Zn(II) was monitored and optimized under the influence of several operational controlling conditions and factors such as pH, shaking time, temperature, initial metal ions concentration, and counter-ions at the functional group. The results obtained confirmed the very high potential of the sorbents; however, the properties depend on the structure of the functional group. The tested sorbents showed fast kinetics, significant capacity at 25 °C (84 mg/g for the Zn(II) sorption with VBC-Ox4.10, 63 mg/g for the Cd(II) sorption with VBBr-Ox3.10, and 69 mg/g for the Cu(II) sorption with VBC-K3.10), and temperature dependence (even 100% increase in capacity values at 45 °C). The selected sorbent can be regenerated without a significant decrease in the metal removal efficiency. Full article
(This article belongs to the Special Issue New Compounds, Materials and Extracting Systems )
►▼ Show Figures

Figure 1

12 pages, 1794 KiB  
Article
Separation and Recovery of Gold(III), Palladium(II) and Platinum(IV) by Solvent Extraction Using a New β-Diketone Derivative from Acidic Solutions
by Elzbieta Radzyminska-Lenarcik, Ilona Pyszka and Artur Kosciuszko
Materials 2021, 14(16), 4436; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14164436 - 08 Aug 2021
Cited by 8 | Viewed by 2163
Abstract
This study indicates that a new amine derivative of β-diketone (EDAB-acac) can be successfully used in an acidic medium (HCl) to separate a mixture containing Au(III), Pd(II), and Pt(IV) ions using solvent extraction. The study was conducted in single and ternary model solutions. [...] Read more.
This study indicates that a new amine derivative of β-diketone (EDAB-acac) can be successfully used in an acidic medium (HCl) to separate a mixture containing Au(III), Pd(II), and Pt(IV) ions using solvent extraction. The study was conducted in single and ternary model solutions. The impact of acid concentration and the type of solvent (toluene, chloroform, methylene chloride, 2-ethylhexanol) on separation efficiency was discussed. It has been shown that increasing the HCl concentration in the aqueous phase does not favor extraction. In contrast, solvents with high donor numbers (methylene chloride, 2-ethylhexanol) increase both the extraction percentage of Pd and Au as well as the separation coefficients of Pd in relation to Au and Pt. The palladium(II) and gold(III) (which form 4-coordinated planar [MCl4]2− complexes) are extracted most efficiently, Pd(II) (87–93%) and Au(III) (56–62%). The stripping of Au(III), Pd(II), and Pt(IV) ions from the EDAB-acac-methylene chloride phase was also investigated using 0.5 M ammonia aq., mineral acid (5 M HCl, 5 M HNO3), 0.1 M thiourea in HCl and 0.5 M ammonium thiocyanate. A 3-step stripping process was proposed for the recovery of Pd(II), Au(III), and Pt(IV) from the Pd-Au-Pt mixture in the EDAB-acac-methylene chloride system. In the first stage, the aqueous phase is treated with 5 M HNO3 (Pt separation), followed by the application of 0.5 M ammonia (Pd separation) and, finally, 0.1 M thiourea in HCl (Au separation). The solvent extraction with EDAB-acac in acidic medium (HCl) can be used for separation of Pd(II) and Au(III) ions from e-waste leach solutions. Full article
(This article belongs to the Special Issue New Compounds, Materials and Extracting Systems )
►▼ Show Figures

Graphical abstract

9 pages, 4434 KiB  
Article
Preparation and Characterization of Mg–Al–B Alloy (Mg0.5Al0.5B2) Via High-Temperature Sintering
by Lin Yang, Jie He, Yusong Ma, Liang Zhang, Shizhou Ma, Xiqiang Gai and Xinggao Zhang
Materials 2021, 14(13), 3608; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14133608 - 28 Jun 2021
Cited by 6 | Viewed by 1503
Abstract
Boron and its alloys have long been explored as potential fuel and increasingly replace pure aluminum powder in high-energy formulations. The ignition and burning properties of boron can be improved by making boron alloys. In this study, an Mg–Al–B alloy was synthesized from [...] Read more.
Boron and its alloys have long been explored as potential fuel and increasingly replace pure aluminum powder in high-energy formulations. The ignition and burning properties of boron can be improved by making boron alloys. In this study, an Mg–Al–B alloy was synthesized from magnesium, aluminum and boron powders in a 1:1:4 molar ratio by preheating to 600 °C for 30 min, followed by high-temperature sintering in a tube furnace. The effects of sintering temperature (700–1000 °C) and holding time (0.5–10 h) on the phase composition of mixed powders were studied. After the samples were cooled to room temperature, they were ground into powder. The phase composition, micromorphology and the bonding forms of elements of the synthesized samples were studied using XRD, SEM and XPS. The results show that each element exists in the form of simple substance in the alloy. The influence of the sintering temperature on the synthesis reaction of Mg0.5Al0.5B2 is very important, but holding time has little effect on it. With the increase of sintering temperature, the content of the Mg0.5Al0.5B2 phase gradually increases, and the phase content of residual metal gradually decreases. The phase and morphology analyses show that the optimum sintering temperature is 1000 °C with a minimum holding time of 0.5 h. It is expected to be used in gunpowder, propellant, explosives and pyrotechnics with improved characteristics. Full article
(This article belongs to the Special Issue New Compounds, Materials and Extracting Systems )
►▼ Show Figures

Figure 1

14 pages, 1045 KiB  
Article
Recovery of Palladium(II) and Platinum(IV) in Novel Extraction Systems
by Zuzanna Wiecka, Martyna Rzelewska-Piekut, Irmina Wojciechowska, Karolina Wieszczycka and Magdalena Regel-Rosocka
Materials 2021, 14(2), 285; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14020285 - 08 Jan 2021
Cited by 9 | Viewed by 1965
Abstract
Recovery of platinum group metals (PGM) from complex aqueous solutions generated as a result of leaching of various spent materials (e.g., spent automotive converters) is a vital issue in the context of the circular economy. In this study pyridinium derivatives containing an imidoamide [...] Read more.
Recovery of platinum group metals (PGM) from complex aqueous solutions generated as a result of leaching of various spent materials (e.g., spent automotive converters) is a vital issue in the context of the circular economy. In this study pyridinium derivatives containing an imidoamide or imine moiety (i.e., 3-[1-(2-ethylhexyloxyimine)methane]-1-propylpyridinium chloride, 3-[1-(decyloxyimine)methane]-1-propylpyridinium chloride, 3-[1-(decyloxyimine)ethane]-1-propylpyridinium chloride and 4-[1-amine(2-ethylhexyloxyimine)]-1-propylpyridinium chloride) are proposed as novel extractants for recovery of palladium(II) and platinum(IV) from model chloride aqueous solutions. The results of liquid-liquid extraction from one-component solutions of palladium(II) or platinum(IV) showed that quaternary pyridinium salts can be used as effective extractants for platinum metal ions. Moreover, PGM extraction from a two-component mixture proved no evident selectivity in the transfer of one of the metal ions to the organic phase. As the best extractant among the investigated ones, D3EI-PrCl (with straight alkyl chain at substituent) can be pointed out, however, problems with effective stripping or phase disengagement after stripping should be indicated as a drawback of the organic phases used. Further investigation should focus on the improvement of the organic phase properties (e.g., increase in hydrophobicity of the extractants and addition of an organic phase modifier) towards stripping efficiency. Full article
(This article belongs to the Special Issue New Compounds, Materials and Extracting Systems )
►▼ Show Figures

Graphical abstract

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-4
Back to TopTop