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Advanced Materials for Energy Conversion and Water Sustainability, 2nd Edition

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

Deadline for manuscript submissions: closed (31 October 2025) | Viewed by 781

Special Issue Editors


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Guest Editor
School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
Interests: photothermal conversion materials; graphene composites; polymer hydrogels; interfacial evaporation; desalination; water purification
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China
Interests: two-dimensional materials; polymer composites; gas sensor; flexible strain sensor; stretchable electrodes
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Water is the Earth’s most precious life resource and is becoming perilously scarce and polluted. It is imperative to advance effective, affordable and sustainable strategies to augment the water supply. This topic involves advanced material innovation via structural assembly and surface modulation associated with carbon materials (carbon nanotubes, graphene, Mxene, carbon fibers, etc.), polymer hydrogels (alginate, polyethylene glycol, polyacrylamide, polypyrrole, etc.), metal nanoparticles (gold, silver, platinum, copper, etc.), inorganic compounds (thiosulfate, titanium dioxide, etc.), and metal–organic framework (MOF) and covalent organic framework (COF) materials. Subsequently, an in-depth study of the energy conversion mechanism and performance of these materials in the fields of photothermal, electrothermal, photoelectric, electrochemical, etc., is required to extend their applications in desalination, various sewage purification, sterilization, pollutant degradation, etc. Examples include solar-driven interfacial water purification, capacitive deionization, advanced oxidation, photo/electrocatalytic degradation, membrane distillation, adsorption, and other associated technologies to address the clean water crisis issue.

Dr. Panpan Zhang
Dr. Wenjing Yuan
Guest Editors

Manuscript Submission Information

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Keywords

  • advanced material innovation
  • energy conversion
  • desalination
  • wastewater treatment
  • pollutant degradation
  • sustainable clean water harvesting

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Published Papers (1 paper)

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Review

13 pages, 671 KB  
Review
Doping of Magnéli Phase—New Direction in Pollutant Degradation and Electrochemistry
by Vanja Vojnović, Maja Ranković, Anka Jevremović, Nataša R. Mijailović, Bojana Nedić Vasiljević, Maja Milojević-Rakić, Danica Bajuk-Bogdanović and Nemanja Gavrilov
Molecules 2025, 30(21), 4282; https://doi.org/10.3390/molecules30214282 - 4 Nov 2025
Cited by 1 | Viewed by 615
Abstract
This review summarizes the recent developments in titanium suboxide (TSO) doping and the application of doped materials in pollutant degradation and electrochemistry. Doping is mainly limited to transition and rare-earth metals, with some exceptions, of similar ionic radii and charge, that can replace [...] Read more.
This review summarizes the recent developments in titanium suboxide (TSO) doping and the application of doped materials in pollutant degradation and electrochemistry. Doping is mainly limited to transition and rare-earth metals, with some exceptions, of similar ionic radii and charge, that can replace Ti ions in TSO without too much disturbance to the lattice. Consequently, doping is limited to below 10 at%, which predominantly induces oxygen vacancy formation. Doping mechanisms are weighted, and their effect on conductivity, stability, and catalytic activity is overviewed. High-temperature H2 reduction of TiO2 is still the dominant preparation method, with carbothermal reduction and Ti reduction gaining ground due to safety and energy concerns. Doping predominantly increases the conductivity 2–5 times, while the stability can be both improved or worsened, depending on the size and charge of the doping ion. Electrochemical oxidation, at positive overpotentials, of per- and polyfluoroalkyl substances (PFAS), antibiotics, and other water pollutants, is the main avenue of application. Doping almost exclusively leads to complete selected pollutant degradation and improvement of the pristine TSO, which is summarized in detail. New niche applications of peroxide, hydrogen, and chlorine production are also viable on doped TSO and are touched upon. Complementing experimental results are theoretical calculations, and we give an overview of density functional theory (DFT) results of transition metal-doped TSOs, identifying active centers, degradation trends, and potential new doping candidates. Full article
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