摘要
通过简单的水热法和KOH活化法制备了一种吸附性能和催化性能优良的材料Co-CNTs-KOH,并对其进行表征分析;考察了Co-CNTs-KOH投加量、BPA初始质量浓度、PMS投加量、pH和离子强度等因素对降解BPA效果的影响。结果表明,所制备的催化剂Co-CNTs-KOH为表面粗糙、疏松多孔的不规则形状,具有较高的结晶度和密集分布的介孔结构;在催化剂质量浓度为20 mg/L、BPA初始质量浓度为20 mg/L、PMS浓度为0.5 mmol/L、弱酸条件下,BPA的降解效果最佳,降解率高达93.5%;通过自由基猝灭反应得出结论,SO_(4)^(-)·和OH·自由基是该体系主要的活性氧化物质。
Co-CNTs-KOH,a material with good adsorption and catalytic properties,is prepared by simple hydrothermal method and KOH activation method,and characterized and analyzed.The effects of Co-CNTs-KOH dosage,bisphenol A initial concentration,PMS dosage,pH and ionic strength on the degradation effect of bisphenol A are investigated.The results show that the prepared Co-CNTs-KOH has a rough surface,loose and porous irregular shape,high crystallinity and dense mesoporous structure.It is found that the degradation effect of bisphenol A reaches the best with a degradation rate as high as 93.5%when the catalyst dosage is 20 mg·L^(-1),the initial concentration of bisphenol A is 20 mg·L^(-1),the concentration of PMS is 0.5 mM,and under weak acid conditions.Through free radical quenching reaction,it is discovered that SO_(4)^(-)·and OH·radicals are the main active oxidizing substances in the system.
作者
胡锋平
龙兰兰
陈钧杰
许莉
许高平
HU Feng-ping;LONG Lan-lan;CHEN Jun-jie;XU Li;XU Gao-ping(School of Civil Engineering and Architecture,East China Jiaotong University,Nanchang 330013,China;Jiangxi Provincial Key Laboratory of Drinking Water Safety,Nanchang 330013,China;National Experimental Teaching Demonstration Center of Civil Engineering,East China Jiaotong University,Nanchang 330013,China;Jiangxi Water Affairs and Water Science Testing R&D Co.,Ltd.,Jingdezhen 333000,China)
出处
《现代化工》
CAS
CSCD
北大核心
2023年第9期91-96,共6页
Modern Chemical Industry
基金
江西省自然科学基金项目(20212ACB204003)
国家自然科学基金项目(61872141)。
