氮掺杂纳米中空碳球的制备与高效去除双酚A  

SYNTHESIS OF N-DOPED HOLLOW CARBON SPHERE AND HIGH EFFICIENCY REMOVAL OF BISPHENOL A

作　　者：欧萍 施维林[1] 张一梅 王飞 陈庄 栗帅 OU PingI ＇;SHI Wei-linJ;ZHANG Yi-mei;WANG Fei;CHEN Zhuang;LI Shnai(College of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009,China;Suzhou Research Institute of North China Electric Power University,Suzhou 215000,China)

机构地区：[1]苏州科技大学环境科学与工程学院,江苏苏州215009 [2]华北电力大学苏州研究院,江苏苏州215000

出　　处：《环境工程》2018年第8期48-53,共6页Environmental Engineering

基　　金：中央高校基本科研基金(JB2016016);国家自然科学基金(51508187;31570515);江苏省国家自然科学基金(BK20150390)

摘　　要：制备了氮掺杂纳米中空碳球(NHCS),并研究其对水中双酚A(BPA)的吸附情况。采用扫描电子显微镜(SEM)对材料进行了结构和形貌表征,考察了p H值和吸附剂投加量对BPA的吸附影响,探究了NHCS对BPA的吸附行为和机制。结果表明:NHCS对BPA具有较好的吸附能力和重复性;当p H值为6时,NHCS对BPA的最大吸附量达到了171.6 mg/g,吸附过程符合准二级吸附动力学方程和Freundlich吸附等温线模型;热力学参数ΔG为负值,表明该吸附过程为自发过程。N-doped hollow carbon sphere was synthesized and applied to remove bisphenol A（BPA） in water. The structure and morphology of the resulted sample were characterized by scanning electron microscope （SEM）. The factors affected the adsorption of BPA including pH and dosage of adsorbent were investigated. The adsorption behavior and mechanism of BPA by NHCS were investigated in detail. The resuhs showed that NHCS materials exhibited good adsorption ability for BPA and good reusability. The maximum adsorption capacity reached 171.6 mg/g at pH of 6. Pseudo second order kinetics equations and the Freundlich adsorption model could describe the adsorption process of BPA. The thermodynamic parameters including AG,AH and AS were also calculated. The negative AG values indicated that all the adsorption processes were spontaneous.

关 键 词：氮掺杂纳米中空碳球(NHCS) 双酚A 吸附动力学 吸附等温方程 吸附热力学 

分 类 号：X703[环境科学与工程—环境工程]