化学
激进的
吸附
氧气
电子转移
光化学
催化作用
物理化学
有机化学
作者
Shumin Zhu,Qingdong Ruan,Xingwang Zhu,Dan Li,Bin Wang,Chao Huang,Liangliang Liu,Fangyu Xiong,Jianjian Yi,Yanhua Song,Jinyuan Liu,Mengxia Ji,Paul K. Chu,Hui Xu
标识
DOI:10.1016/j.jcis.2024.02.166
摘要
Enhancing the activation of peroxymonosulfate (PMS) is essential for generating more reactive oxygen species in advanced oxidation process (AOPs). Nevertheless, improving PMS adsorption and expediting interfacial electron transfer to enhance reaction kinetics pose significant challenges. Herein, we construct confined W18O49 nanowires with asymmetric active centers containing Co-Vo-W (Vo: oxygen vacancy). The design incorporates surface-rich Vo and single-atom Co, and the resulting material is employed for PMS activation in water purification. By coupling unsaturated coordinated electrons in Vo with low-valence Co single atoms to construct an the “electron fountainhead”, the adsorption and activation of PMS are enhanced. This results in the generation of more active free radicals (SO4•-, •OH, •O2–) and non-free radicals (1O2) for the decomposition of micropollutants. Thereinto, the degradation rate of bisphenol A (BPA) by Co-W18O49 is 32.6 times faster that of W18O49 monomer, which is also much higher than those of other transition-metal-doped W18O49 composites. This work is expected to help to elucidate the rational design and efficient PMS activation of catalysts with asymmetric active centers.
科研通智能强力驱动
Strongly Powered by AbleSci AI