伊利石负载纳米碳复合材料的制备及其对Cr(Ⅵ)的吸附性能研究  

Fabrication of Illite/C Nanocomposite and Its Adsorption Performance towards Cr(Ⅵ) from Aqueous Solution

作　　者：王珊[1] 王高锋[1] 孙文[1] 孙志明[1] 郑水林[1] 

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083

出　　处：《硅酸盐通报》2016年第10期3274-3279,共6页Bulletin of the Chinese Ceramic Society

摘　　要：以伊利石为载体、葡萄糖为碳源,采用水热法制备了伊利石负载纳米碳复合材料,并采用X射线衍射分析(XRD)、扫描电镜(SEM)和红外吸收光谱(FTIR)对样品进行了表征。研究了复合材料对溶液中Cr(Ⅵ)的吸附性能,考察了溶液pH值和吸附时间对吸附效果的影响。结果表明,pH值为2时伊利石负载纳米碳复合材料对Cr(Ⅵ)的吸附效果最佳;伊利石负载纳米碳复合材料对Cr(Ⅵ)的吸附过程可用准二级动力学方程描述,吸附等温线可用Langmuir等温吸附方程拟合,其饱和吸附量达到129.63 mg/g。An illite/C nanocomposite was fabricated using illite as carrier and glucose as carbonaceous source by a hydrothermal carbonation process(HTC). The samples were characterized by X-ray diffraction(XRD),scanning electron microscope(SEM),and Fourier transform infrared speetrometry(FTIR). The adsorption performance of the composite adsorbent for Cr(VI) was studied,and the effect of pH value and contact time on the adsorption capacity were investigated. The results showed that at a pH of 2. 0,illite/C nanocomposite had the optimum adsorption performance. The adsorption process of illite/C nanocomposite towards Cr(VI) could be well described by the pseudo-second order kinetic equation,and the adsorption isotherm could be well fitted by Langmuir model. The maximum adsorption capacity of illite/C nanocomposite adsorbent was up to 129. 63 mg/g.

关 键 词：伊利石 碳 水热法 六价铬 吸附 

分 类 号：TU599[建筑科学—建筑技术科学]