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34. A Review of Innovative Cucurbituril-Based Photocatalysts for Dye Degradation.

Author

Kaseem, Mosab

Subjects
*ENVIRONMENTAL degradation, *REACTIVE oxygen species, *PHOTOCATALYSTS, *WASTEWATER treatment, *ENVIRONMENTAL remediation
Abstract

This review explores the advancements in photocatalysis facilitated by cucurbiturils (CBs), specifically focusing on CB[5], CB[6], CB[7], and CB[8]. Cucurbiturils have gained prominence due to their exceptional ability to enhance photocatalytic reactions through mechanisms such as improved charge separation, high adsorption capacities, and the generation of reactive oxygen species. The review summarizes recent research on the use of CBs in various photocatalytic applications, including dye degradation, pollutant removal, and wastewater treatment. Studies highlight CB[5]'s utility in dye removal and the creation of efficient nanocomposites for improved degradation rates. CB[6] is noted for its high adsorption capacities and photocatalytic efficiency in both adsorption and degradation processes. CB[7] shows promise in adsorbing and degrading toxic dyes and enhancing fluorescence in biomedical applications, while CB[8] leads to significant improvements in photocatalytic activity and stability. The review also discusses the synthesis, properties, and functionalization of cucurbiturils to maximize their photocatalytic potential. Future research directions include the optimization of cucurbituril-based composites, the exploration of new application areas, and scaling up their use for practical environmental and industrial applications. This comprehensive review provides insights into the current capabilities of cucurbituril-based photocatalysts and identifies key areas for future development in sustainable photocatalytic technologies. [ABSTRACT FROM AUTHOR]

Published
2024
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46. Enhanced Surface Properties of TiO 2 -Based Coatings via Stevia-Assisted Spark Suppression: Insights from Density Functional Theory Calculations.

Author

Kaseem, Mosab, Safira, Ananda Repycha, and Fattah-alhosseini, Arash

Subjects
*DENSITY functional theory, *SURFACE properties, *TITANIUM dioxide, *PLASMA flow, *STEVIA
Abstract

This study investigates the enhancement of surface properties in TiO2-based coatings on the Ti-6Al-4V alloy through micro-arc oxidation (MAO), employing stevia sugar as a novel additive. By incorporating stevia sugar into acetate–glycerophosphate–tetraethoxysilane solutions used in MAO treatment, the porous morphology of TiO2-based oxide layers is regulated. The incorporation of stevia moderates plasma discharge intensity, facilitating the formation of a uniform silicon-rich structure characterized by reduced porosity and pore size. This effect is attributed to the interaction between stevia and tetraethyl orthosilicate (TEOS), which modifies the TEOS hydrolysis process, thereby enhancing structural uniformity and stability while concurrently reducing plasma discharge intensity. Additionally, theoretical calculations offer a valuable understanding of the reactivity and interactions of stevia, TEOS, and their complex during the MAO process, laying the groundwork for further research and optimization in this promising field. [ABSTRACT FROM AUTHOR]

Published
2024
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