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Sustainable and Functional Materials: From Design to Applications

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

Deadline for manuscript submissions: 20 May 2026 | Viewed by 506

Special Issue Editors

Department of Chemical and Biomedical Engineering, University of Missouri-Columbia, Columbia, MO 65211, USA
Interests: polymer composite; sustainable nanomaterial; functional polymer

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Guest Editor
Department of Chemical and Biomedical Engineering, University of Missouri-Columbia, Columbia, MO 65211, USA
Interests: protein biophysics; biophysical chemistry; metal–organic framework; polymeric materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The urgent demand for sustainable solutions has intensified research on advanced materials that are both high-performing and environmentally responsible. Sustainable and functional materials have become central to addressing challenges in energy, environment, healthcare, and advanced manufacturing. Designed with a focus on renewability, biodegradability, recyclability, and low ecological footprint, these materials also exhibit tunable properties that enable wide-ranging applications.

This Special Issue highlights recent progress across the innovation pathway—from conceptual design and molecular engineering to scalable processing, characterization, and practical deployment. Topics of interest include but are not limited to bio-based polymers, nanomaterials, hybrid composites, hydrogels, and covalent and metal–organic frameworks. Contributions exploring material–structure–property relationships, novel fabrication strategies, and application-oriented studies are particularly welcome.

By bringing together interdisciplinary research from chemistry, materials science, engineering, and environmental technology, this collection offers a platform for advancing both fundamental understanding and practical implementation. We anticipate that the contributions will not only deepen knowledge of sustainable and functional materials but also inspire innovative approaches for translating them into real-world applications, supporting the transition toward a more sustainable future.

Dr. Liu Liu
Dr. Zhongyu Yang
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 250 words) can be sent to the Editorial Office for assessment.

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

  • environmental sustainability
  • functionalization
  • biomass and biomaterial
  • degradable polymer
  • novel manufacturing technology
  • performance and application

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Published Papers (1 paper)

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Research

15 pages, 5140 KB  
Article
Distribution and Enrichment of Heavy Metals in Fine-Grained Fractions of Crushed Electronic Waste
by Jitka Malcharcziková, Kateřina Skotnicová and Praveen Kumar Kesavan
Materials 2026, 19(6), 1222; https://doi.org/10.3390/ma19061222 - 19 Mar 2026
Viewed by 214
Abstract
The concentration of heavy metals in the environment has been steadily increasing, raising concerns about their adverse effects on ecosystems and human health. Fine-grained particulate matter is of particular concern due to its enhanced mobility, bioavailability, and potential for inhalation exposure. Facilities involved [...] Read more.
The concentration of heavy metals in the environment has been steadily increasing, raising concerns about their adverse effects on ecosystems and human health. Fine-grained particulate matter is of particular concern due to its enhanced mobility, bioavailability, and potential for inhalation exposure. Facilities involved in the mechanical processing of electronic waste (e-waste) represent a significant potential source of metal-containing fine particles. In this study, crushed e-waste components containing precious metals were separated into particle-size fractions ranging from 3.0 to 0.15 mm using a vibratory sieving system. The elemental composition of the individual fractions was determined by energy-dispersive X-ray fluorescence spectrometry (ED-XRF), while the spatial distribution of selected metals in fine fractions was further investigated using scanning electron microscopy combined with energy-dispersive X-ray spectroscopy (SEM–EDS). The results demonstrate that e-waste contains a wide range of heavy non-ferrous metals whose distribution is strongly dependent on particle size. A pronounced enrichment of metals was observed in the finest fractions, particularly below 0.25 mm. Compared to the coarse fraction (>3 mm), the zinc concentration increased by approximately one order of magnitude, while chromium, nickel, and cadmium exhibited increases of up to approximately 20-fold. Lead showed particularly high enrichment, reaching approximately 2 wt.% in the finest fraction (<0.15 mm), corresponding to nearly fiftyfold enrichment relative to the coarse fraction. Tin concentrations also increased markedly, in some cases by up to two orders of magnitude. Trace amounts of arsenic and selenium were detected in the finest fractions, whereas mercury was not detected. The combined ED-XRF and SEM–EDS results confirm that fine-grained e-waste fractions are the dominant carriers of hazardous metals and respirable particles generated during mechanical processing. These findings highlight the dual character of fine fractions as both a critical environmental and occupational risk and a potentially valuable secondary resource. The study emphasizes the importance of controlled handling, effective dust management, and targeted processing strategies to minimize human exposure while enabling efficient recovery of valuable metals from e-waste. Full article
(This article belongs to the Special Issue Sustainable and Functional Materials: From Design to Applications)
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