Catalytic activation of hydrogen peroxide by Cr2AlC MAX phase under ultrasound waves for a treatment of water contaminated with organic pollutants

Carbonaceous CoCr LDH nanocomposite as a light-responsive sonocatalyst for treatment of a plasticizer-containing water

“…Firstly, ultrasonic cavitation causes the formation, growth, and collapse of bubbles in a solution and consequently increasing the heating in case of cavitation collapse happens. These hot spots have temperatures of 5000 °C, pressures of about 1000 atmospheres with a life span of a few microseconds which leads to the emission of light, i.e., the so-called sonoluminescence [45] , [46] . These energies are able to form electron-hole couples on the surface of the catalyst.…”

Synergistic effects of layered Ti3C2TX MXene/MIL-101(Cr) heterostructure as a sonocatalyst for efficient degradation of sulfadiazine and acetaminophen in water

“…The points of zero charge (pH pzc ) of MXe/MIL-101(Cr) were calculated using the pH drift method [28] with five NaNO 3 solutions (0.01 mol/L) of different pH values that were achieved by adding varying concentrations of HCl and NaOH. First, 0.075 g of the catalyst was added to these solutions and dispersed by shaking at 250 rpm for 24 h at 20 °C.…”

“…Such sonochemical processes can not only be used to simulate the growth of nanostructure composites but also be used to eradicate organic contaminants [ [26] , [25] ]. However, ultrasound has little impact on reactive radical species production; alternatively, sonocatalysts (catalysts that become highly active when exposed to ultrasound) have attracted much research attention [27] , [28] . Furthermore, sonocatalysts have been shown to accelerate pollutant degradation rates by producing free radicals and pyrolyzing water molecules [29] .…”

Magnetic-acoustic actuated spinous microrobot for enhanced degradation of organic pollutants

“…AOPs gather efficient treatment techniques based on the in-situ production of strong active species, primarily highly reactive oxygen oxidizing species (ROS) like hydroxyl radicals (•OH) [13] , [14] , [15] . State-of-the-art AOPs techniques based on ozonation, Fenton, heterogeneous photocatalysis [16] , persulfate oxidation [17] , and ultrasonic decomposition [18] have been reported. Among these, the Fenton reagent has garnered significant attention due to its mild reaction conditions and simple operation.…”