review · RSC Advances
Nanostructured metal oxides and their composites offer effective solutions for environmental cleanup and water treatment. These materials possess distinct crystalline structures, tunable morphologies, high surface areas, versatile surface chemistry, and widespread availability, making them well suited for the selective removal of organic pollutants. Target contaminants include insecticides, phenolic compounds, and organic dyes, which are addressed through adsorption or photodegradation. Structural and crystallographic characteristics significantly influence their remediation performance. In photocatalytic applications, metal oxides are particularly effective due to high photodegradation efficiency, economical synthesis routes, and optimised bandgap engineering. Current findings detail the capabilities, ongoing challenges, and opportunities of utilising these advanced composite materials and their photo-stimulation mechanisms to clean up hazardous organic pesticide contamination.
Organic pesticides and chemical contaminants in water supplies present serious risks to ecosystems and public health. Understanding how metal oxide composites act as adsorbents and photocatalysts aids the development of sustainable, low-cost water treatment systems. These materials rely on widely available resources and efficient mechanisms to break down or capture hazardous agricultural and industrial pollutants.
The described technology is directed at water treatment and environmental remediation applications, which could serve municipal water facilities, agricultural processors, and environmental engineering firms. Because the underlying findings represent early-stage research focused on synthesis methods, mechanisms, and broader challenges, the technology remains at an exploratory research level rather than ready for immediate deployment.
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Metal oxide nanoparticles and their composites have garnered significant attention in water treatment and environmental cleanup due to their unique physicochemical properties. These materials exhibit distinct crystalline structures, tunable morphologies, large surface areas, versatile surface chemistry, and widespread availability. These features make nanostructured metal oxides and their composites highly effective for the selective removal of organic pollutants from the environment, either by adsorption or photodegradation. This article focuses on recent advances, challenges, and opportunities in the use of metal oxides and their composites for the targeted removal of organic contaminants, including insecticides, phenolic compounds, organic dyes, and similar pollutants. The discussion encompasses a broad range of metal oxides and their composites, highlighting their diverse structural, crystallographic, and morphological characteristics that influence their adsorption and photocatalytic performance. Emphasis is placed on the photocatalytic and adsorptive capabilities of these materials, including their photo-stimulation properties and mechanisms. Metal oxides are highlighted as outstanding photocatalysts due to their high photodegradation efficiency, cost-effective synthesis methods, and optimized bandgap engineering. This review serves as a valuable resource for researchers exploring the photocatalytic and adsorptive applications of metal oxide-based materials, particularly in the remediation of hazardous organic pollutants such as pesticides.
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DOI: 10.1039/d4ra08149h
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