摘要
采用水热法合成了四氧化三铁@碳/氧化石墨烯（Fe_3O_4@C/GO）复合材料,并利用XRD、TEM、VSM等对其结构与性质进行了表征,进一步研究了其对水中染料的吸附性能.研究结果表明,Fe_3O_4比较均匀地分散在GO上;在实验范围内,随着GO用量、罗丹明B初始浓度或吸附温度的提高,Fe_3O_4@C/GO复合材料对罗丹明B染料的饱和吸附量均相应地增加;而且高GO用量条件下所制备的复合材料的吸附速率更快;随着pH值在2-11范围内增加,复合材料的饱和吸附量先增大后降低,pH值为7时达到最大值.对于GO和Fe_3O_4质量比为0.8的条件下所制备的Fe_3O_4@C/GO复合材料,当罗丹明B初始浓度为1000mg/L,其饱和吸附量可达到303.4mg/g.
Fe_3O_4@carbon/graphene oxide（Fe_3O_4@C/GO）composites were synthesized by hydrothermal method and characterized by X-ray diffraction, transmission electron microscopy, vibrating sample magnetometer. And their dye adsorbing properties were investigated. The results indicated that the Fe_3O_4 nanoparticles were uniformly anchored on GO sheets. The saturated adsorption capacities towards Rhodamine B（Rh B） of the composites increased with the increase of GO content, initial Rh B concentration and adsorbing temperature. And the higher GO content in the composite was, the quicker the absorbing rate was. The saturated adsorption capacity of the composite reached a maximum value when the pH value was 7. For the composite prepared at 0.8 of the mass ratio of GO to Fe_3O_4, the saturated adsorption capacity reached 303.4mg/g at 1000mg/L of initial Rh B concentration.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2016年第10期2981-2987,共7页
China Environmental Science
基金
国家自然科学基金(21174011
U1462102)
中央高校基本科研业务费项目(JD1406)
