Manganese oxide OMS-2 loaded on activated carbon fiber: a novel catalyst-assisted UV/PMS process for carbamazepine treatment in water. (17th June 2022)

• Record Type: Journal Article
• Authors: Yang, Ning; Xiao, Lixi; Deng, Yuwei; Wu, Zhiyu; Yin, Hang; Liu, Yang; Li, Mengru; Ye, Yuxuan; Wang, Dandan; Li, Qiang; Pan, Fei; Xia, Dongsheng
• Is Part Of: New journal of chemistry. Volume 46:Number 26(2022)
• Page Start: 12844
• Page End: 12855
• Publication Date: 2022-06-17
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d2nj02119f
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : A novel catalyst was prepared by loading OMS-2 onto activated carbon fiber (ACF) via a one-step hydrothermal method, which was further adopted for carbamazepine treatment. Abstract : In this study, a novel catalyst was prepared by loading OMS-2 onto activated carbon fiber (ACF) via a one-step hydrothermal method, which was further adopted for carbamazepine treatment. SEM, TEM and XRD analyses indicate that OMS-2 was successfully loaded on ACF. In the OMS-2@ACF/UV/PMS system, the degradation rate of CBZ (20 mg L −1 ) was 98.1% and the mineralization rate was 53.3%, which were higher than those of the traditional UV/PMS process. The enhanced performance in the presence of OMS-2@ACF was attributed to the redox cycle between Mn 2+ /Mn 3+ /Mn 4+, which then accelerated PMS activation to generate more active species. The primary reactive species, including SO4 ˙ −, ˙OH, O2 ˙ − and 1 O2, were confirmed through EPR and radical capture experiments. Additionally, the material exhibited excellent reusability even after 5 cycles, and remarkable performance for CBZ degradation was found in real water samples.