Catalytic performance and mechanism of PTFE modified NiCo2O4 in high-salt organic wastewater treatment during wet air oxidation at ambient pressure

In situ growth of an ultrathin Cu/g-C3N4 coating over SBA-15 for catalytic wet air oxidation of pollutants under extremely mild conditions

“…58 The O 1s XPS peaks of Cu 1 /CN 3.3 @SBA-N can be fitted to three peaks at 532.1 eV, 533.2 eV and 535.1 eV, corresponding to lattice oxygen (O–metal), chemisorbed oxygen or hydroxyl groups (Si–O/OH), and adsorbed water (O–H 2 O), respectively. 17,59 The lattice oxygen content over Cu 1 /CN 3.3 @SBA-N is significantly higher than that of Cu 1 /CN 3.3 @SBA (Fig. S7†), which is conducive to the oxidation reaction.…”

“…15 To accelerate the oxidation reaction, as a consequence, CWAO must be carried out under high temperature and high pressure conditions, which incur harsh requirements on the mechanical strength and corrosion resistance of the equipment and apparatus, 16 greatly impeding the practical application of this technology. 17 Therefore, exploring highly effective catalysts that can activate dioxygen under mild conditions is one of the prerequisites to commercialize CWAO technology on a wide scale. 18,19…”

Microstructured gas-liquid-(solid) interfaces: A platform for sustainable synthesis of commodity chemicals

“…The higher rates can be explained by a high air (O 2 ) permeability combined with an enhanced air (O 2 ) concentration near the photocatalytic particles/sheets promoted by the hydrophobic microenvironment that can enable the formation of plastrons. As a matter of fact, plastrons have been shown to enhance the activity and tune the selectivity of hybrid catalysts combining a hydrophobic support and a catalytic phase (e.g., PTFE-NiCo 2 O 4 ) ( 30 ) or in hydrophobized electrocatalysts (e.g., hydrophobic zinc oxide or metal copper) ( 31 ). In both cases, hydrophobic moieties allow gas pre-concentration and enhanced surface diffusion of gas molecules/plastrons to the active centers.…”