Adil, Sawaira Kim, Woong Sub Kim, Tae Hyeong Lee, Seunghyun Hong, Seok Won Kim, Eun-Ju 2024-01-19T16:34:31Z 2024-01-19T16:34:31Z 2021-09-02 2020-09 0304-3894 https://pubs.kist.re.kr/handle/201004/118181 Herein, the defects and surface oxygen functionalities of multi-walled carbon nanotubes (MWCNTs) derived from a solid state reaction are demonstrated to be effective in the activation of peroxymonosulfate (PMS) for organic pollutant degradation. The catalytic activity of defective, oxygen-functionalized CNTs (dCNTs) is much better than bare CNTs, which stems from many active sites on the CNT surface, including structural defects and carbonyl functional groups, and excellent electrical conductivity. Furthermore, the effect of several operational factors and water conditions on the degradation rate of the targeted pollutant and material stability are comprehensively evaluated for the practical application of the dCNT/PMS-coupled process. The underlying catalytic mechanism in dCNTs is expected to take place via nonradical pathway and radical-induced oxidation where surface-bound radicals play a more dominant role than free radicals. The defect and oxygen functional group tuning strategy provides an effective methodology for the development of advanced carbon catalysts in Fenton-like reactions. English ELSEVIER Defective, oxygen-functionalized multi-walled carbon nanotubes as an efficient peroxymonosulfate activator for degradation of organic pollutants Article 10.1016/j.jhazmat.2020.122757 1 JOURNAL OF HAZARDOUS MATERIALS, v.396 JOURNAL OF HAZARDOUS MATERIALS 396 N scie scopus 000541924000083 2-s2.0-85083590129 Engineering, Environmental Environmental Sciences Engineering Environmental Sciences & Ecology Article REDUCED GRAPHENE OXIDE METAL-FREE CARBON CATALYTIC-OXIDATION HETEROGENEOUS CATALYSIS BASE ACTIVATION PERSULFATE SULFATE SURFACE ADSORPTION GENERATION Metal-free catalysis Defect engineering Multi-walled carbon nanotubes Peroxymonosulfate Carbonyl group