摘要
采用Hummers法制得了氧化石墨,研究了氧化石墨对低浓度的亚甲基蓝溶液的吸附作用,探讨了氧化石墨的用量、pH、温度等对吸附的影响,以XRD和FT-IR对吸附前后的氧化石墨进行了表征。对吸附过程的动力学拟合表明吸附符合一级反应的动力学,吸附活化能E=71.73kJ/mol,指前因子lnA=24.93。结果表明吸附为化学吸附,吸附率约91%,吸附量为4.2mg亚甲基蓝/g氧化石墨。
Graphite oxide（GO）was prepared by hummers method and used in absorbing methylene blue with lower concentration.The effect of mass of GO,pH and temperature on the absorption were studied.The GO and GO absorbing of methylene blue were characterized by XRD and FT-IR.The kinetics of fitting showed that the absorbtion followed first order reaction.The activation energy E was 71.73kJ/mol,preexponential factor lnA was 24.93.The absorbing of methylene blue on GO was chemical adsorption with the rate of about 91% and adsorbing capacity of about 4.2mg methylene blue/gGO
出处
《化工新型材料》
CAS
CSCD
北大核心
2014年第12期180-182,共3页
New Chemical Materials
基金
芜湖市科技计划项目(2012cxy12)
芜湖职业技术学院自然科学研究项目(WZ[2012]ky01)
关键词
氧化石墨
亚甲基蓝
化学吸附
动力学
graphite oxide
methylene blue
chemical adsorption
kinetics
