【摘要】 采用铁基金属有机骨架材料MIL-100（Fe）作为前驱体,外加硼源制备了铁基硼掺杂多孔炭（Fe@BPC）,将其用于催化单过硫酸氢盐（PMS）降解水中双酚A（BPA）,同时分析Fe@BPC的形貌结构,研究PMS浓度、催化剂投加量、初始pH等对降解效果的影响。结果表明,在催化剂投加量为0.10 g/L、PMS摩尔浓度为1.00 mmol/L、BPA为10 mg/L、初始pH=7的条件下,Fe@BPC对BPA的降解率为98.3%。在较宽的初始pH（3～11）范围内,Fe@BPC仍保持较好的催化活性,且4次循环后对BPA降解率仍可达95%以上。利用自由基淬灭实验和电子顺磁共振（EPR）技术对反应过程中产生的活性氧物质（ROS）进行了分析,结果表明,体系中可能同时存在SO^-₄·、·OH、·O^-₂和¹O₂,共同对BPA的降解发挥作用。Fe@BPC中存在的Fe⁰、铁氧化物、—BC₂O和—BCO₂是其具备良好催化活性的原因。更多还原

【Abstract】 Fe@B-doped porous carbon（Fe@BPC）,prepared with iron-based metal-organic framework MIL-100（Fe） as precursors and external B source, was used to catalyze peroxymonosulfate to degrade bisphenol A（BPA） in water. The morphology and structure of the Fe@BPC were characterized, and the effects of PMS concentration, catalyst dosage, initial pH,etc. on the degradation of BPA were investigated. The results showed that the removal of BPA was 98.3% with 1.00 mmol/L PMS,0.10 g/L Fe@BPC,initial pH=7 and 10 mg/L BPA. Fe@BPC maintained a good catalytic activity in a wide range of the initial pH（3-11）. Furthermore, the removal of BPA still reached 95% even the Fe@BPC were cycled for four consecutive runs. Based on the results of the radical queching and electron spin resonance experiments, SO^-₄·,·OH,·O^-₂ and ¹O₂ might coexist in the system and contribute to the degradation of BPA. The good catalytic performence of Fe@BPC was mainly attributed by the abundant Fe⁰,iron oxide, —BC₂O and —BCO₂.更多还原