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Advanced Porous Materials for the Elimination of Chemical Contaminants and Residues

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Materials Chemistry".

Deadline for manuscript submissions: 30 June 2025 | Viewed by 2735

Special Issue Editors

Dr. Li Yu

E-Mail Website
Guest Editor
Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
Interests: detection of contaminants in agro-food and agro-feed products; sample preparation for trace analysis in food and agricultural products; monitoring and risk assessment; mycotxin removal and degradation with advanced nanomaterials
Prof. Dr. Liangcai Peng

E-Mail Website
Guest Editor
Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan 430070, China
Interests: plant cellulose biosynthesis; plant cell wall structure & genomics; carbon partitioning & carbohydrate metabolism; bioenergy crop biotechnology; biomass chemistry & biofuel technology; heavy metal phytoremediation & biochemical production
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Chemical contaminants and residues, such as mycotoxins and phycotoxins, pesticide residues and veterinary drugs, heavy metals, dioxins and polychlorinated biphenyls, toxicants produced in food processing, and plant-derived contaminants, pose major threats to the safety of agricultural and food products.

Porous materials, especially advanced porous materials, including metal–organic frameworks (MOFs), covalent–organic frameworks (COFs), porous organic polymers (POPs), and biochars, due to their high specific surface areas, tunable pore structures, and facile functionalization, have shown great potential in the elimination of these hazards.

This Topic, entitled “Advanced Porous Materials for the Elimination of Chemical Contaminants and Residues”, aims to gather scientific reviews or research articles about the advanced porous materials and techniques for the elimination of food hazards. Topics may include, but are not limited to, (a) the design and preparation of new porous adsorbents for chemical contaminant and residue removal; (b) novel methods for the elimination of chemical contaminants and residues; (c) mechanistic studies on food hazard elimination; and (d) advanced detection methods for early warning. We hope that the papers collected on this topic inspire progress in food hazard elimination.

Dr. Li Yu
Prof. Dr. Liangcai Peng
Guest Editors

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. Molecules 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

  • chemical contaminants
  • residues
  • food safety
  • food hazards
  • elimination
  • mechanism
  • advanced porous materials

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Published Papers (1 paper)

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Research

39 pages, 7466 KiB  
Article
Evaluation of Adsorption Ability of Lewatit® VP OC 1065 and Diaion™ CR20 Ion Exchangers for Heavy Metals with Particular Consideration of Palladium(II) and Copper(II)
by Anna Wołowicz and Zbigniew Hubicki
Molecules 2024, 29(18), 4386; https://doi.org/10.3390/molecules29184386 - 15 Sep 2024
Cited by 1 | Viewed by 2210
Abstract
The adsorption capacities of ion exchangers with the primary amine (Lewatit® VP OC 1065) and polyamine (Diaion™ CR20) functional groups relative to Pd(II) and Cu(II) ions were tested in a batch system, taking into account the influence of the acid concentration (HCl: [...] Read more.
The adsorption capacities of ion exchangers with the primary amine (Lewatit® VP OC 1065) and polyamine (Diaion™ CR20) functional groups relative to Pd(II) and Cu(II) ions were tested in a batch system, taking into account the influence of the acid concentration (HCl: 0.1–6 mol/L; HCl-HNO3: 0.9–0.1 mol/L HCl—0.1–0.9 mol/L HNO3), phase contact time (1–240 min), initial concentration (10–1000 mg/L), agitation speed (120–180 rpm), bead size (0.385–1.2 mm), and temperature (293–333 K), as well as in a column system where the variable operating parameters were HCl and HNO3 concentrations. There were used the pseudo-first order, pseudo-second order, and intraparticle diffusion models to describe the kinetic studies and the Langmuir and Freundlich isotherm models to describe the equilibrium data to obtain better knowledge about the adsorption mechanism. The physicochemical properties of the ion exchangers were characterized by the nitrogen adsorption/desorption analyses, CHNS analysis, Fourier transform infrared spectroscopy, the sieve analysis, and points of zero charge measurements. As it was found, Lewatit® VP OC 1065 exhibited a better ability to remove Pd(II) than Diaion™ CR20, and the adsorption ability series for heavy metals was as follows: Pd(II) >> Zn(II) ≈ Ni(II) >> Cu(II). The optimal experimental conditions for Pd(II) sorption were 0.1 mol/L HCl, agitation speed 180 rpm, temperature 293 K, and bead size fraction 0.43 mm ≤ f3 < 0.6 mm for Diaion™ CR20 and 0.315–1.25 mm for Lewatit® VP OC 1065. The maximum adsorption capacities were 289.68 mg/g for Lewatit® VP OC 1065 and 208.20 mg/g for Diaion™ CR20. The greatest adsorption ability of Lewatit® VP OC 1065 for Pd(II) was also demonstrated in the column studies. The working ion exchange in the 0.1 mol/L HCl system was 0.1050 g/mL, much higher compared to Diaion™ CR20 (0.0545 g/mL). The best desorption yields of %D1 = 23.77% for Diaion™ CR20 and 33.57% for Lewatit® VP OC 1065 were obtained using the 2 mol/L NH3·H2O solution. Full article
(This article belongs to the Special Issue Advanced Porous Materials for the Elimination of Chemical Contaminants and Residues)
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