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Recent Advances in Chemical Treatments of Wastewater

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

Deadline for manuscript submissions: 31 July 2026 | Viewed by 1346

Special Issue Editors

Faculty of Arts and Sciences, Beijing Normal University, Zhuhai 519087, China
Interests: chemical engineering process; development of catalytic/adsorption materials; adsorption/catalytic reaction engineering; separation and purification technology; advanced oxidation mechanism
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Guest Editor
Center for Water Research, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai 519087, China
Interests: water pollution control; environmental remediation microbiology; phosphate removal materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

As one of the most fundamental natural resources for life, water is indispensable to human beings, and the problem of water environmental pollution is receiving more attention. Wastewater treatment techniques globally play a critical role in purification of polluted effluents and achieving sustainable water use in order to solve the problem of water shortage. Among the different treatment methods, chemical methods show advantages including high efficiency, flexibility, and cost-effectiveness. In this Special Issue, we will cover recent advances in the chemical treatment of wastewater. Potential topics include, but are not limited to, chemical methods in wastewater purification, mechanism studies at the interface of these processes, preparation and fit-for-purpose applications of novel functional materials, strengthening of the current wastewater treatment technologies, and other approaches related to wastewater chemical treatment techniques.

Dr. Yi Yang
Dr. Fuqiang Fan
Guest Editors

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Keywords

  • wastewater treatment processes
  • purification mechanism
  • environmental remediation materials
  • water reuse

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Published Papers (1 paper)

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Review

26 pages, 1463 KB  
Review
Design and Application of Hetero-Multicomponent Metal Oxide Photocatalysts for Wastewater Treatment: Ti–Cu–Zn Catalysts and Future Research Directions
by Maria-Anthoniette Oghenetejiro Onoriode-Afunezie, Justinas Krutkevičius and Agnė Šulčiūtė
Molecules 2026, 31(2), 299; https://doi.org/10.3390/molecules31020299 - 14 Jan 2026
Cited by 1 | Viewed by 1008
Abstract
Hetero-multicomponent metal oxide catalysts are attracting increasing attention for wastewater remediation due to their tunable band structures, synergistic redox activity, and enhanced stability. This review thoroughly evaluates recent progress in the synthesis and application of such catalysts, highlighting Ti–Cu–Zn nanostructures as a representative [...] Read more.
Hetero-multicomponent metal oxide catalysts are attracting increasing attention for wastewater remediation due to their tunable band structures, synergistic redox activity, and enhanced stability. This review thoroughly evaluates recent progress in the synthesis and application of such catalysts, highlighting Ti–Cu–Zn nanostructures as a representative case study. We examine synthesis approaches—including hydrothermal, biosynthesis, precipitation, and spray-based methods, with additional insight into sol–gel and other less commonly applied techniques—with emphasis on their suitability for constructing layered and multicomponent heterostructures. Mechanistic aspects of photocatalysis, Fenton and Fenton-like processes, adsorption, and electrochemical routes are discussed, with particular focus on charge separation, reactive oxygen species (ROS) generation, and pollutant-specific degradation pathways. Comparative performance metrics against antibiotics, pesticides, dyes, and fertilizers are analyzed, alongside considerations of leaching, reusability, and scale-up potential. Importantly, while significant progress has been made for organic micropollutants, applications in heavy metal remediation remain scarce, highlighting an urgent research gap. By situating Ti–Cu–Zn systems within the broader class of multicomponent catalysts, this review not only synthesizes current advances but also identifies opportunities to expand their role in sustainable wastewater management, including field deployment, regulatory compliance, and integration into decentralized treatment systems. Full article
(This article belongs to the Special Issue Recent Advances in Chemical Treatments of Wastewater)
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