Photocatalytic Degradation and Adsorptive Removal of Emerging Organic Pesticides Using Metal Oxide and Their Composites: Recent Trends and Future Perspectives

Abstract

For applications involving water cleanup, metal oxide nanoparticles are exceptionally successful. They are useful for the adsorption and photocatalytic destruction of organic pollutants due to their distinctive qualities, which include their wide surface/volume area, high number of active sites, porous structure, stability, recovery, and low toxicity. Metal oxide nanomaterials have drawn a lot of attention from researchers in the past ten years because of their various production pathways, simplicity in surface modification, abundance, and inexpensive cost. A wide range of metal oxides, such as iron oxides, MgO, TiO2, ZnO, WO3, CuO, Cu2O, metal oxides composites, and graphene–metal oxides composites, with variable structural, crystalline, and morphological features, are reviewed, emphasizing the recent development, challenges, and opportunities for adsorptive removal and photocatalytic degradation of organic pollutants such as dyes, pesticides, phenolic compounds, and so on. In-depth study of the photocatalytic mechanism of metal oxides, their composites, and photocatalytically important characteristics is also covered in this paper. Metal oxides are particularly effective photocatalysts for the degradation of organic pollutants due to their high photodegradation efficiency, economically sound methods for producing photo-catalytic materials, and precise band-gap engineering. Due to their detrimental effects on human health, pesticides—one of the highly hazardous organic pollutants—play a significant part in environmental contamination. Depending on where they come from and who they are targeting, they are categorized in various ways. Researchers focusing on metal oxides and their composites for the adsorptive and photocatalytic degradation of pesticides would find the review to be a beneficial resource. Detailed information on many pesticides, difficulties associated with pesticides, environmental concentration, and the necessity of degradation has been presented.

Photocatalytic degradation of drugs and dyes using a maching learning approach

“… 127 These studies provide evidence of the potential of machine learning in the prediction of catalytic degradation performance and the identification of highly effective catalysts. 129 However, despite these advancements, there are still challenges that need to be addressed when applying machine learning models to the field of catalytic degradation. One of the challenges encountered in this study pertains to the absence of a correlation relationship and the relative significance of variables.…”

Biosynthesized Metallic Nanoarchitecture for Photocatalytic Degradation of Emerging Organochlorine and Organophosphate Pollutants: A Review

“…The work briefly discusses the mechanism of non-biogenic metal oxide NPs for photocatalytic degradation of only diazinon [29] 2023 Primarily focused only on the utilization of non-biogenic metal oxides and their composites for photocatalytic degradation and the adsorptive removal of pesticides [28] 2022 Reviewed recent advances in the oxidative degradation of pesticides, with a main focus on the application of non-biogenic semi-conductive nanomaterials [39] 2024 Pragmatically focuses on providing recent advances in the direction of biogenic metallic NPs, metal oxide NPs, and their nanocomposites as photocatalysts towards the photocatalytic degradation of organochlorine and organophosphorus contaminants in water systems by critically analyzing their efficiency. Used kinetics and isotherm models to explain the adsorption that occurs during the photocatalytic degradation of OP and OC using biogenic NPs to corroborate the general photocatalytic degradation mechanism.…”

“…For instance, Vaya and Surolia [27] have written a review mainly focusing on non‐biogenic semiconductor‐based for pesticide degradation and mineralization in aqueous environments. de Oliveira's team [23] study primarily reviewed the combined effect involving plasmonic and semiconductor non‐biogenic NPs in degrading pesticides under photo influence, while Shanaah et al [28] primarily focused only on the utilization of non‐biogenic metal oxides and their composites for both photocatalytic degradation and adsorptive removal of pesticides. Secondly, some reviews extended the focus of the study to the degradation of only one type of organophosphorus using metal oxide NPs.…”

A Review on the Use of Metal Oxide-Based Nanocomposites for the Remediation of Organics-Contaminated Water via Photocatalysis: Fundamentals, Bibliometric Study and Recent Advances

“…The top five journals with more published documents over the subject are listed in Figure 4. The ranking is led by the Journal of Colloid and Interface Science (25 documents), followed by Colloids and Surfaces A: Physicochemical and Engineering Aspects (14 documents) and by Chemosphere (12). Much of the research on metal oxide nanocomposites for the remediation of aqueous environments is distributed through numerous papers in the materials domain that deal specifically with the synthesis of new materials, their characterization and their application in solving current problems in society.…”