Journal
ULTRASONICS SONOCHEMISTRY
Volume 40, Issue -, Pages 460-464Publisher
ELSEVIER
DOI: 10.1016/j.ultsonch.2017.07.020
Keywords
Sonochemistry; Green ultrasonic-assisted oxidation; Multiwall carbon nanotube (MWCNTs)/TiO2; Hybrid nanocatalyst; Alcohols
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Funding
- Iran National Science Foundation (INSF)
- Research Council of the Iran University of Science and Technology (IusT)
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In this work, design and development of a new economically-efficient and environmentally-benign sonochemical-assisted oxidation protocol by using multiwall carbon nanotubes (MWCNTs) and TiO2 hybrid nanostructure catalyst is reported. The structure, morphology and particle size of the nanostructure catalyst and the products were characterized by various methods such as FT-IR, FE-SEM, EDX, XRD, DTA, GC and GC MS analyses. The selective oxidations of alcohols to aldehydes, ketones and epoxidation were studied in the presence of MWCNTs/TiO2 at room temperature under ultrasonic irradiation conditions in excellent conversions. This is the first design, preparation, characterization and application of the present nanomaterial and also the first ultrasound irradiated green oxidation. This novel protocol offers several advantages such as environmentally-benign, high yields, selective oxidations, short reaction times, easily isolation of the products, simple preparation, recover-ability and reusability of the nanocatalyst without significant decrease in its activity.
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