二维纳米材料在重金属废水去除中的吸附机制及应用研究  

Study on Adsorption Mechanism and Application of Two-Dimensional Nanomaterials in Heavy Metal Wastewater Removal

作　　者：徐辰瑶 XU Chenyao(Yixing City Gas Service Center,Yixing214206,China)

机构地区：[1]宜兴市燃气服务中心,江苏宜兴214206

出　　处：《中国资源综合利用》2025年第1期268-270,共3页China Resources Comprehensive Utilization

摘　　要：探讨二维纳米材料在重金属废水去除中的吸附机制及其应用潜力。采用液相剥离法制备石墨烯、MoS_(2)和WS_(2)二维纳米材料,并构建模拟重金属废水体系,研究3种材料对Pb^(2+)、Cd^(2+)、Hg^(2+)等重金属离子的吸附行为。采用Langmuir和Freundlich等温线模型及准二级动力学模型进行数据拟合,结合傅立叶红外光谱(Fourier Transform Infrared Spectroscopy,FTIR)和X射线光电子能谱(X-ray Photoelectron Spectroscopy,XPS)表征分析吸附机制。结果表明,二维纳米材料表现出高效吸附能力,在pH值较小时对重金属离子的选择性吸附效果更显著。This study explores the adsorption mechanism and application potential of two-dimensional nanomaterials in the removal of heavy metal wastewater.Two-dimensional nanomaterials such as graphene,MoS_(2)and WS_(2)were prepared by liquid phase stripping and a simulated heavy metal wastewater system was constructed to study the adsorption behaviour of three materials on Pb^(2+),Cd^(2+)and Hg^(2+)heavy metal ions.Langmuir and Freundlich isotherm models and quasi-secondorder kinetic models were used for data fitting,and the adsorption mechanism was analyzed by Fourier Transform Infrared Spectroscopy(FTIR)and X-ray Photoelectron Spectroscopy(XPS)characterization.The results show that the twodimensional nanomaterials exhibit high adsorption capacity,and the selective adsorption effect of heavy metal ions is more significant at low pH.

关 键 词：二维纳米材料 重金属废水 吸附机制 

分 类 号：TB383.1[一般工业技术—材料科学与工程] X703[环境科学与工程—环境工程]