中文摘要：

采用相同反离子协同磷酸活化法,以十六烷基三甲基溴化铵（CTAB）-KBr为复合改性剂,制备了一种高效吸附剂复合改性膨胀石墨（M-EG）,通过扫描电子显微镜（SEM）、傅里叶变换红外光谱（FTIR）及X射线电子能谱（XPS）等对膨胀石墨（EG）和改性膨胀石墨（M-EG）的形貌结构、组成和价态进行了表征,考察了EG和M-EG对酸性艳蓝染料废水的处理效果.结果表明,复合改性后的膨胀石墨孔隙度变大,表面含氮和溴官能团增多.吸附剂M-EG对酸性艳蓝染料废水具有较高的吸附性能,在p H=1.0及30℃条件下对染料的去除率达到94.13%;EG符合二级动力学吸附模型,用Langmuir等温线方程拟合效果较好;M-EG符合二级吸附动力学方程,同时符合Langmuir和Freundlich等温吸附模型;M-EG的吸附动力学常数大于EG吸附动力学常数.

英文摘要：

Modified expanded graphite （M-EG） was synthesized via same counter ion coordinated phosphate （H3PO4 ） activation method, as prepared expanded graphite （EG）. M-EG was investigated by scanning electron microscopy （SEM）, Fourier transform infrared spectroscopy （FTIR） and X-ray photoelectron spectroscopy （XPS）. The adsorbent activities of the EG and M-EG were evaluated for the reduction of acid brilliant blue. The results indicated that the porosity of EG after composite modified expanded, the surface enlarged and the nitrogen- and bromine-containing functional groups increasing. Adsorbent M-EG in acid brilliant blue dye wastewater show high adsorbent activities with a 94. 13% reduction at pH= 1.0 and 30 ℃. The adsorption reaction of EG line with second-order kinetic adsorption model, and the Langmuir isotherm equation is well fitted; M-EG conform second adsorption kinetics equation, while compliance with Langmuir isotherm model and Freundlich isotherm model, what＇ s more adsorption kinetics constant is greater than EG＇ s.