太阳光光辅助FeSe2催化活化PMS降解BPA
Solar light-assisted FeSe2 catalytic activation of PMS for BPA degradation
采用水热法合成了FeSe2,对光辅助FeSe2活化过一硫酸盐(PMS)去除内分泌干扰物双酚A(BPA)的性能进行了研究。通过SEM、XRD、XPS表征了FeSe2的结构与性能。探究了不同的催化体系、催化剂浓度、PMS浓度、pH、阴离子对降解BPA的影响。结果表明,在PMS浓度为1 mmol/L,FeSe2催化剂浓度为0.2 g/L,pH为3.0时对BPA的降解效果最好,1 h对BPA的降解率达到99%。探究了在体系降解过程中产生的活性物质,通过淬灭实验和电子顺磁共振发现 1O2、SO4·-和·OH起主要作用。同时材料具有较好的稳定性,循环5次对BPA的降解仍能达到98%。
FeSe2 was synthesized via the hydrothermal method,and its performance in solar light-assisted activation of peroxymonosulfate (PMS) for the removal of endocrine-disrupting chemical bisphenol A (BPA) was investigated.The structure and properties of FeSe2 were characterized using SEM,XRD,and XPS.The effects of different catalytic systems,catalyst concentration,PMS concentration,pH,and anions on BPA degradation were explored.The results showed that the best degradation efficiency for BPA was achieved at 1 mmol/L PMS concentration,0.2 g/L FeSe2 catalyst concentration,and pH 3.0,with a BPA degradation rate of 99% within 1 h.The active species generated during the degradation process were investigated,and it was found that 1O2,SO4·-,and ·OH played major roles,as revealed by quenching experiments and electron paramagnetic resonance (EPR) analysis.Additionally,the material demonstrated good stability,with BPA degradation efficiency remaining at 98% after five cycles.
高级氧化 / 光辅助 / 双酚A / FeSe2 / 过一硫酸盐
advanced oxidation / light-assisted / bisphenol A / FeSe2 / peroxymonosulfate
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李静, 徐宝森, 李保宁. 锰氧化物催化剂制备及其活化过一硫酸盐降解双酚A[J]. 商洛学院学报, 2024, 38(6):63-67. |
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国家自然科学基金项目(52170031)
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