化学
双酚A
催化作用
激进的
核化学
硼
苯磺酸
单线态氧
无机化学
金属有机骨架
石墨氮化碳
硼酸
协同催化
腐植酸
氧气
有机化学
光催化
吸附
环氧树脂
肥料
作者
Yantao Wan,Wei Zhang,Xiaolin Han,Lei Zhou,Huajun Zhen,Chengzi Wu,Qi Yu,Guangli Xiu
标识
DOI:10.1016/j.jhazmat.2021.127832
摘要
A novel B,N-decorated carbocatalyst ([email protected]) for peroxymonosulfate (PMS) activation was prepared by a simple pyrolysis method using the iron-based metal organic frameworks (Fe-MOF), boric acid and boron nitride (BN) as precursors. [email protected] removed 93.3% of bisphenol A (BPA) in 90 min compared to 64.9%, 82.1% and 83.5% with [email protected], [email protected] and [email protected], respectively, with 0.15 g/L catalyst and 1 mM PMS at initial pH of 7. The solo B-doping with boron acid on the Fe-MOF derived porous carbon enhanced its catalytic capacity; moreover, B, N co-doping with BN and boron acid as precursors further promoted the catalytic performance. The addition of BN not only provided more B, N catalytic centers but also improved the stability of the carbocatalyst. In addition, hydroxyl radicals, sulfate radicals, superoxide radicals, and singlet oxygen species were involved in the degradation of BPA. Fe species, –BCO2/–BC2O, pyridinic N, and pyrrolic N groups on the carbon matrix played the important roles in the BPA degradation. The outstanding catalytic performance of [email protected] could be attributed to the synergistic effects between iron nanoparticles and the B/N codoped carbon matrix. This study gives new insights into the design and preparation of high-efficient B,N-decorated carbocatalysts for environmental remediation.
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