氮掺杂介孔碳制备及吸附脱除气相污染物研究  

Fabrication of Nitrogen Doped Mesoporous Carbon for Enhanced Adsorptive Ability to Versatile Organic Compounds

作　　者：陈雪梅 任占琦 柯军 CHEN Xue-mei;REN Zhan-qi;KE Jun(School of Chemistry and Environmental Engineering,Wuhan Institute of Technology,Hubei Wuhan 430205,China)

机构地区：[1]武汉工程大学化学与环境工程学院,湖北武汉430205

出　　处：《广州化工》2019年第2期68-71,110,共5页GuangZhou Chemical Industry

基　　金：武汉工程大学大学生校长基金(2016061);湖北省自然科学基金(2015CFB177)

摘　　要：采用SBA-15作为硬模板,成功制备了氮掺杂的介孔碳材料(NOMC),结果表明NOMC具有较大比表面积和孔道结构。以丙酮和罗丹明B为底物评价了NOMC吸附性能,发现碳化温度对氮掺杂介孔碳材料的吸附性能有显著的影响,在800℃下碳化形成的NOMC具有最好的吸附性能。此外,研究发现掺杂氮可以显著提高介孔碳材料的吸附脱除性能。这是因为氮元素的掺杂使得碳材料的电子分布发生改变,调节了样品的极性,提高了对极性有机分子的吸附能力。By using SBA-15 as template,a series of N-doped mesoporous carbon were successfully prepared via a carbonized route with different temperatures.The rich porous structure and large surface area of N-doped mesoprous carbon were testified by using BET,HRTEM and Raman,etc.Furthermore,the adsorption abilities of as-obtained samples were evaluated based on removal efficiency of gaseous acetone and dyes.These results indicated that the carbonization temperature significantly affected the adsorption ability whilst the sample synthesized at 800℃ exhibited the best performance.Compared with the undoped sample,all doped carbon materials displayed the enhanced adsorptive abilities because the introduction of N atoms in carbon structure could effectively influence the electron distribution and thus adjust the surface polarity of carbon bonds,which could be beneficial for improving the adsorptive capability to polar organic pollutants.

关 键 词：SAB-15 介孔碳材料 氮掺杂 吸附剂 VOCS 

分 类 号：X511[环境科学与工程—环境工程]