Heterogeneous sonocatalytic activation of peroxomonosulphate in the presence of CoFe2O4/TiO2 nanocatalysts for the degradation of Acid Blue 113 in an aqueous environment

The use of ultrasound in the South Cone region. Advances in organic and inorganic synthesis and in analytical methods

“…Then, the use of this energy was evaluated to accelerate the digestion process in the chemical oxygen demand (COD) determination, using different types of oxidants, such as K 2 Cr 2 O 7 and manganese(III) solution. The sonication methods applied to COD enabled to decrease the digestion time from 2 h (conventional method) to 4 min [72] or 1 min [73] , depending on the oxidant used [50] , [51] . Later, a method was developed that implied mineralization and oxidation steps for determining total Kjeldahl nitrogen.…”

“…Recently, in 2020, the authors reported the synthesis and complete characterization (TEM, STEM-HAADF, XRD, Raman, TEM and DR-UV-Vis) of CoFe 2 O 4 , and CoFe 2 O 4 /TiO 2 nanocatalysts, prepared using a low-frequency ultrasound-assisted technique [50] . CoFe 2 O 4 /TiO 2 system demonstrated to be active in the catalytic degradation of AB113 in environmental conditions ( Scheme 36 ).…”