Constructing heterostructured FeS<inf>2</inf>/CuS nanospheres as high rate performance lithium ion battery anodes
关键字：HETEROGENEOUS ACTIVATION; VISIBLE-LIGHT; OXIDATION; NANOPARTICLES; PERSULFATE; MECHANISM; G-C3N4; OXYGEN
摘要：In this work, carbon-doped CoMn2O4/Mn3O4 (C-CoMnO) composite catalyst were prepared via calcining solvothermal product of Mn2+ , Co2+ , and 2-methylimidazole in air. The catalytic performance of activating peroxymonosulfate (PMS) for ciprofloxacin (CIP) degradation was discussed. The results showed that the 0.1 g L-1C-2CoMnO could effectively activate PMS, resulting in 96.18% CIP was degraded within 60 min. The corresponding total organic carbon removal ratio and apparent rate constant were 81.33% and 0.043 min(-1 ), respectively. The influencing factors, such as Co/Mn molar ratios, calcination temperature, PMS concentration, solution pH, and coexisting ions were explored. The optimal catalytic system exhibited good recycling performance, wide pH adaptation and high resistance to salt interference. SO4 center dot & nbsp;- , center dot OH, and center dot & nbsp;O-2(- )-basedradicals, as well as O-1(2) and surface complexes-based nonradicals were participated in CIP degradation. The CIP degradation pathways were proposed. Density functional theory calculations (DFT) indicated that PMS was more easily activated via Co/Mn synergism. The doped carbon was also contributed to PMS activation via facilitating electron transfer. This study may shed light toward the synergistic effect of metal oxides in PMS activation.
卷号：287
期号：
是否译文：否
