Mesoporous TiO<inf>2</inf> nanoparticles for silver recovery from cyanide-contaminated plating effluent: One-pot synthesis and application of used TiO<inf>2</inf>
Issued Date
2025-11-18
Resource Type
ISSN
13835866
eISSN
18733794
Scopus ID
2-s2.0-105005496588
Journal Title
Separation and Purification Technology
Volume
373
Rights Holder(s)
SCOPUS
Bibliographic Citation
Separation and Purification Technology Vol.373 (2025)
Suggested Citation
Thoumrungroj A., Longchin P., Kannan A.M., Hunsom M. Mesoporous TiO<inf>2</inf> nanoparticles for silver recovery from cyanide-contaminated plating effluent: One-pot synthesis and application of used TiO<inf>2</inf>. Separation and Purification Technology Vol.373 (2025). doi:10.1016/j.seppur.2025.133576 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/110387
Title
Mesoporous TiO<inf>2</inf> nanoparticles for silver recovery from cyanide-contaminated plating effluent: One-pot synthesis and application of used TiO<inf>2</inf>
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Corresponding Author(s)
Other Contributor(s)
Abstract
Mesoporous TiO2 nanoparticles was one-pot synthesized by microwave-assisted hydrothermal without any solvents or dispersing agents. It was found that high microwave power produced highly crystalline TiO2 NPs with a high content of anatase phase and BET surface area. A higher number of microwave-treated cycles also resulted in highly crystalline TiO2 NPs, but with lower anatase phase content and BET surface area. Among various TiO2 NPs samples, the TM8_3 synthesized at 800 W with three microwave-treated cycle exhibited the highest photocatalytic silver recovery even at the third use. At optimum condition (e.g. 25 vol.% C2H5OH, 0.05 mM Na2S2O3, 1.0 g/L), approximately 95% of silver was recovered within 30 min. Additionally, the recovered metallic silver was found to decorate on the surface of TM8_3 as Ag/TM8_3 NPs, demonstrating superior optical properties and photocatalytic activity for simultaneous H2 production and color reduction in wastewater from an ethanol production plant under UV light irradiation.