Sonocatalytic degradation of EDTA in the presence of Ti and Ti@TiO₂ nanoparticles.

ABSTRACT: The sonocatalytic degradation of EDTA (C₀ = 5 10^-3 M) in aqueous solutions was studied under 345 kHz (P_ac = 0.25 W mL^-1) ultrasound at 22-51 °C, Ar/20%O₂, Ar or air, and in the presence of metallic titanium (Ti⁰) or core-shell Ti@TiO₂ nanoparticles (NPs). Ti@TiO₂ NPs have been obtained using simultaneous action of hydrothermal conditions (100-214 °C, autogenic pressure P = 1.0-19.0 bar) and 20 kHz ultrasound, called sonohydrothermal (SHT) treatment, on Ti⁰ NPs in pure water. Ti⁰ is composed of quasi-spherical particles (30-150 nm) of metallic titanium coated with a metastable titanium suboxide Ti₃O. SHT treatment at 150-214 °C leads to the oxidation of Ti₃O an

SUBMITTER: El Hakim S 

PROVIDER: S-EPMC7786564 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature