摘要
使用氧化石墨烯(graphene oxide,GO)改性壳聚糖(CS)制备氧化石墨烯-壳聚糖复合材料(GO-CS),用于吸附水体中的农药。采用扫描电子显微镜(SEM)、傅里叶红外光谱仪(FT-IR)、热重分析仪(TGA)和X射线衍射仪(XRD)等手段对其进行表征,并以甲霜灵为吸附对象,探究该复合材料的吸附性能。结果表明:GO-CS对甲霜灵的吸附量随着吸附时间和甲霜灵初始浓度的增加而增大,而后趋于平缓,直至达到吸附平衡。吸附数据拟合结果表明,GO-CS对甲霜灵的吸附以单分子层吸附为主,具有一定的非均质性,是多种机制共同作用的结果。
The graphene oxide-chitosan composite(GO-CS)was used as the adsorbent for pesticide from aqueous solutions.The adsorbent was characterized using scanning electron microscopy(SEM),fourier transform infrared spectroscopy(FT-IR),thermogravimetric analysis(TGA)and X-ray diffraction(XRD).The adsorption properties of the adsorbent were investigated by using Metalaxyl as the adsorption object.The results showed that the adsorption capacity of GO-CS increased with the increase of adsorption time and initial concentration of Metalaxyl,and then tended to be gentle until the adsorption equilibrium was reached.The results of adsorption data fitting showed that the adsorption of GO-CS was mainly monolayer adsorption with certain heterogeneity,which was the result of multiple mechanisms.
作者
史学娟
张文婧
姚远
王敬营
程才红
王秀平
SHI Xuejuan;ZHANG Wenjing;YAO Yuan;WANG Jingying;CHENG Caihong;WANG Xiuping(College of Agronomy and Biotechnology,Hebei Normal University of Science&Technology,Qinhuangdao Hebei,066004,China;Hebei Key Laboratory of Active Components and Functions in Natural Products,Hebei Normal University of Science&Technology,Qinhuangdao Hebei,066004,China;Analysis and Testing Center,Hebei Normal University of Science&Technology,Qinhuangdao Hebei,066004,China)
出处
《河北科技师范学院学报》
CAS
2022年第2期54-62,共9页
Journal of Hebei Normal University of Science & Technology
关键词
氧化石墨烯-壳聚糖
吸附性能
甲霜灵
Graphene oxide-Chitosan Composites
adsorption properties
Metalaxyl
