净水技术2025，Vol.44Issue(2)：56-64,9.DOI:10.15890/j.cnki.jsjs.2025.02.006
碳量子点修饰无定型硫化钼活化过一硫酸氢盐降解双酚A
Activated Peroxymonosulfate by Carbon Quantum Dot with Modified Amorphous Molybdenum Sulfide for Degradation of Bisphenol A
摘要
Abstract
[Objective]This study aims to propose an efficient catalytic system for controlling typical endocrine disruptors(EDCs)in water.A carbon quantum dots(CQDs)modified amorphous molybdenum sulfide(MC)is synthesized to activate peroxymonosulfate(PMS)for the degradation of bisphenol A(BPA).[Methods]The physical and chemical properties of MC were analyzed by scanning electron microscope(SEM),X-ray diffraction(XRD)and fourier tionsform infrared spectrometer(FTIR),and the successful doping of CQDs in MC was confirmed.[Results]When the dosage of MC and PMS were 0.2 g/L and 1 mmol/L,respectively,the removal of 10 μmol/L BPA was 100％ within 60 min.The experimental results of conventional water quality background influencing factors showed that the removal of BPA by catalytic system was over 90％in the range of pH value from 3 to 9.In addition,the effect of different coexisting anions on the catalytic system was investigated.Except that the removal of BPA in the presence of(H2PO4-)was reduced to 82％,the effect of coexisting anions including chloride ion(Cl-),bicarbonate ion(HCO3-),nitrate ion(NO3-)on BPA degradation was limited.The results of recycling experiments showed that MC could still maintain strong catalytic activity after six times of reuse,and the activity loss rate was only 18％,suggesting that MC was a promising PMS activator.The results of catalytic mechanism study showed that the main catalytic mechanisms involved in the catalytic system included sulfate radical(SO4·-)and electron transfer.The coexistence of multiple mechanisms made MC/PMS system could effectively degrade a variety of organic pollutants.[Conclusion]This study not only provides technical support for the control of EDCs pollution in water,but also offers a new approach for regulating the catalytic mechanism in heterogeneous PMS activation systems.关键词
碳量子点(CQDs)/硫化钼(MC)/双酚A(BPA)/过一硫酸氢盐(PMS)/电子转移Key words
carbon quantum dots(CQDs)/molybdenum sulfide(MC)/bisphenol A(BPA)/peroxymonosulfate(PMS)/electron transfer分类
资源环境引用本文复制引用
王志君,傅卫江,汪剑锋,朱勇,曾寒轩,邓靖..碳量子点修饰无定型硫化钼活化过一硫酸氢盐降解双酚A[J].净水技术,2025,44(2):56-64,9.基金项目
浙江省自然科学基金项目(LQ24E080020) （LQ24E080020）
