title: Mn/Ti-doped carbon xerogel for efficient catalysis of microcystin-LR degradation in the water surface discharge plasma reactor.
abstract: The novel catalysts of Mn/Ti-doped carbon xerogel (CX) were synthesized for efficient degradation of microcystin-LR (MC-LR) in the water surface discharge plasma reactor. The degradation efficiency of 79.7% was obtained in 6 min with 0.5 wt% Ti impregnation of CX, and it would be increased with higher amount of Ti. In particular, Mn-doped CX resulted in larger mesoporous particle diameter and higher porosity in the matrix, and thereby, the highest efficiency of 88.6% was achieved for CX-Ti-Mn. The possible degradation pathway of MC-LR was elucidated on the basis of the LC-MS analysis. It demonstrated that Adda chain was cleaved from the MC-LR cyclic peptide by OH radical attack after plasma discharge in the presence of catalysts, and the generated nontoxic products can be further easily degraded in the biological treatment. Therefore, Mn/Ti-doped carbon xerogel is promising as the catalyst for the improvement of MC-LR degradation in the water surface discharge plasma reactor.
authors.affiliation: Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.|College of Electronic Information, Hangzhou Dianzi University, Hangzhou, 310018, China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Xin
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, Zhejiang, People's Republic of China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
authors.forename: Zhongjian
authors.initials: Z
authors.lastname: Li
authors.affiliation: Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
authors.forename: Lecheng
authors.initials: L
authors.lastname: Lei
authors.affiliation: Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China. keyangb@zju.edu.cn.
authors.forename: Bin
authors.initials: B
authors.lastname: Yang
mesh_terms: D002244:Carbon / Q000737:chemistry*; D002384:Catalysis; D005782:Gels / Q000737:chemistry; D008345:Manganese / Q000737:chemistry*; D008387:Marine Toxins; D013058:Mass Spectrometry; D052998:Microcystins / Q000032:analysis*; D016062:Porosity; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D014466:Ultraviolet Rays; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000379:methods*
chemical_list: D005782:Gels; D008387:Marine Toxins; D052998:Microcystins; D014874:Water Pollutants, Chemical; D008345:Manganese; D002244:Carbon; D014025:Titanium; C057862:cyanoginosin LR
keywords: High-voltage pulsed plasma discharge; OH radicals; Porous materials; TiO2; UV radiation