采用水热法合成了一种还原氧化石墨烯/4A分子筛(RGO/4A)复合材料,通过扫描电子显微镜、X射线粉末衍射仪和傅里叶变换红外光谱仪对RGO/4A复合材料进行了表征。为了分析复合材料对水中有机污染物的吸附性能,以阴离子染料刚果红为目标污染物进行了吸附实验,考察了吸附时间和刚果红溶液初始质量浓度对吸附性能的影响。结果表明:刚果红在RGO/4A复合材料上的吸附行为符合Langmuir等温吸附模型和准二级动力学模型;在中性条件下RGO/4A复合材料对水中有机污染物刚果红的最大吸附容量为90.09mg/g。
The reduced graphene oxide/4A molecular sieve composites (RGO/4A) were synthesized by hydrothermal method.The composites was characterized by scanning electron microscope (SEM),X-ray diffractometer (XRD) and Fourier transform infrared spectroscopy (FT-IR) to study its physical and chemical properties.In order to analyze the adsorption performance of the composites on organic pollutants,an anionic dye Congo red (CR) was used as the target pollutant to conduct adsorption experiments.The influence of adsorption contact time and initial concentration of CR solution on adsorption performance was explored.The adsorption behavior of CR on the composites conformed to the Langmuir isotherm adsorption model and the pseudo-second-order kinetic model.The maximum adsorption capacity of the composites for the organic pollutant CR was shown to 90.09mg/g.
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基金资助
国家自然科学基金(51005145;51075258)
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