Synthesis of hexagonal mesoporous silica from coal fly ash and their evaluation as adsorbent for gallium recovery

Journal of Molecular Liquids, Journal Year: 2024, Volume and Issue: 410, P. 125597 - 125597

Published: July 21, 2024

Language: Английский

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Synthesis and characterization of cadmium sulfide and titania photocatalysts supported on mesoporous silica for optimized dye degradation under visible light

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 9, 2025

This research presents a new and improved photocatalyst based on the synergistic effect of three components, CdS, TiO2, MCM-41, applying statistical techniques to fine-tune degradation parameters for efficient Methylene Blue (MB) degradation. By creating library CdS/TiO2 nanoparticles systematically loaded onto mesoporous structure with different loading percentages (5, 10, 15, 20, 25% w/w), nanocomposites high surface area maximized optical properties were designed analyzed using material characterization including XRD, FTIR, XPS, UV-Vis DRS, TEM, FESEM, EDS, PL, BET. Ideal performance was achieved from CdS/TiO2/MCM-41 (CTM) 15% w/w loading, which shows photocatalytic at neutral pH, reaching 45.6% MB only two 60-W lamps in 30 min. Furthermore, TOC analyses confirmed effective its intermediate. The reduction (63%, 90 min), indicating successful mineralization pollutant. Response methodology used identify key factors that boost performance, airflow, concentration. model, correlation coefficient R2 = 0.991 precision 47.65, CTM's potential as scalable solution wastewater treatment pollution control.

Language: Английский

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Physicochemical Surface Modification and Characterisation of Coal Fly Ash for Application in Rubber Composites

Minerals, Journal Year: 2024, Volume and Issue: 14(12), P. 1258 - 1258

Published: Dec. 11, 2024

This study evaluated the capability of coal fly ash (untreated and physicochemically modified) when utilised as a filler in cis-1,4-polyisoprene rubber. Physicochemical modification was achieved using two techniques: (1) ammonium sulphate roasting followed by controlled aqueous dissolution (2) sulphuric acid leaching. In addition, effectiveness silane-coupling agent (Si-69) enhancing compatibility untreated physically modified samples with natural rubber investigated. The route increased surface area roughness decreased particle–particle agglomeration sample. Sulphuric treatment agglomeration. However, no increase observed. were not significantly reinforcing, properties they imparted inferior to least reinforcing carbon black. Silane resulted improved dispersion wetting matrix, leading reinforcement compared neat situ addition silane during preparation vulcanisates led composites better mechanical than containing silane-pre-treated ash. Composites filled sulphate-roasted-and-leached performed sulfuric acid-leached These findings suggest that holds promise an effective for materials, offering potential environmental economic benefits repurposing combustion by-products.

Language: Английский

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Polyaluminum Chloride Production from Mullite-Type Coal Fly Ash by Alkali Desilication and High-Pressure HCl leaching

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Language: Английский

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