DOI码：10.1016/j.cej.2024.154831
发表刊物：Chemical Engineering Journal
摘要：The development of high performance and stable heterogeneous catalysts is conducive to promoting the advanced oxidation process (AOPs) to promote the degradation of organic pollutants efficiently, low-cost and environmentally friendly. Here nitrogen-doped hollow carbon spheres (NHCSs) and rigid organic molecule were used to create space confinement and complexation confinement conditions, respectively, and an advanced singleatom
catalyst capable of strongly activating peroxymonosulfate (PMS) to degrade organic pollutants was finally constructed. The AOPs system driven by CoNC/NHCSs (20 mg) combined with PMS (20 mg) can degrade nearly 100 % of 20 mg/L (100 mL) bisphenol A (BPA, a microplastic) pollutant within 30 min, and the mineralization rate is up to 70.5 %. Face the complex water environment, such as sewage containing coexisting anions and
cations, or acidic or alkaline sewage, the CoNC/NHCSs/PMS system still has high catalytic stability, and universality
for other organic pollutants. The filter column with CoNC/NHCSs as the core also realizes the continuous purification of organic pollutants, which shortens the distance between laboratory research and practical application. Radical quenching and electron paramagnetic resonance techniques confirmed that CoNC/NHCSs activated PMS to SO4 ·−, ·OH, and 1O2, and these reactive oxygen species combined to eliminate organic pollutants. Density functional theory (DFT) calculations jointly confirm that the strong activation of PMS by CoNC/NHCSs is the key to achieving efficient degradation of organic pollutants, and the activity of CoNC/NHCSs is derived from high exposure rate of active sites and curvature effect caused by structural bending.
论文编号：10.1016/j.cej.2024.154831
是否译文：否
发表时间：2024-08-12
收录刊物：SCI、EI
发布期刊链接：https://doi.org/10.1016/j.cej.2024.154831
发表时间：2024-08-12