Effective removal of naproxen from aqueous solutions by CWAO process using noble metals supported on carbon nanospheres catalysts

Activation of O2 over three-dimensional manganese oxide nanoprisms under ambient conditions towards oxidative removal of aqueous organics

“…[27][28][29][30][31][32] However, harsh conditions, such as high temperatures (∼100 °C) and pressures (∼5 MPa), are generally required for realizing a good removal efficiency, which leads to high cost and investment. [33][34][35][36] In recent years, activation of O 2 over advanced catalytic materials under ambient conditions has been developed for the degradation of aqueous emerging contaminants and persistent organic pollutants. 37,38 For example, Wang and co-workers prepared a series of molybdatebased catalysts and hybrids for oxidative degradation of dyes using O 2 as the oxidant under ambient conditions.…”

Performance of high temperature phase-stable high entropy oxide (MgCuMnCoFe)Ox in catalytic wet air oxidation of chloroquine phosphate

“…Temperature, initial oxygen pressure and catalyst dosage are considered to be extremely important factors affecting the CWAO system [ 8 , 37 ]. Therefore, the effects of temperature, initial oxygen pressure and HEO dosage on the CQP degradation efficiency of CWAO were studied.…”

“…As a member of advanced oxidation methods (AOPs) together with Fenton, like-Fenton, ozone oxidation, and photocatalysis, catalytic wet air oxidation (CWAO) is a significant part of refractory wastewater treatment process [ 6 , 7 ]. The catalyst can affect the reaction temperature and pressure of wet air oxidation (WAO) system without reducing the treatment effect [ 8 , 9 ]. For example, Serra-P´erez et al [ 8 ] showed that in WAO, the maximum degradation rate of naproxen was 77% within 180 min at 160 °C, while CWAO system achieved this goal within 60 min at 110 °C.…”

“…The catalyst can affect the reaction temperature and pressure of wet air oxidation (WAO) system without reducing the treatment effect [ 8 , 9 ]. For example, Serra-P´erez et al [ 8 ] showed that in WAO, the maximum degradation rate of naproxen was 77% within 180 min at 160 °C, while CWAO system achieved this goal within 60 min at 110 °C. Now, CWAO catalysts mainly include homogeneous and heterogeneous catalysts [ 10 ].…”

Photocatalytic degradation of tetracycline antibiotic over a flower-like S-doped BiOBr: Performance, mechanism insight and toxicity assessment

“…Owing to their excellent electronic conductivity, stability and electronic storage capacity, carbon materials have been developed as ideal photocatalysts, and the most common type of photocatalyst is the carbon-based material (Sun et al, 2022;Chen et al, 2023). At present, the existing carbon materials mainly include porous nanosheets (Liu et al, 2022b;Liu et al, 2022c), hollow nanotubes (Liu et al, 2022d;Zhang et al, 2022) and three-dimensional (3D) nanospheres (Huang et al, 2021;Serra-Pérez et al, 2021;Wang et al, 2022b), among which, hollow carbon nanospheres (HCs) is one of the ideal carrier materials, due to its fast electron transfer rate, rich active sites, high specific surface area, has been widely studied. So far, template-assisted methods have been used to synthesize microspheres and uniformly deposit other nanoparticles on the surface of HCS to change the semiconductor structure, improve electron conduction efficiency and achieve the goal of pollutant degradation.…”