吸附
化学
水溶液中的金属离子
金属
化学吸附
等温过程
无机化学
X射线光电子能谱
催化作用
复合数
化学工程
分析化学(期刊)
物理化学
材料科学
有机化学
环境化学
热力学
复合材料
物理
工程类
作者
Yue Wang,Tamaki Nakano,Xi Chen,Yulong Xu,Yingjie He,Yanxiang Wu,Jieqiong Zhang,Wei Tian,Minghui Zhou,Songxue Wang
标识
DOI:10.1016/j.jhazmat.2024.133437
摘要
A one-pot synthesis afforded a magnetic, crosslinked polymer adsorbent (m-P6) with a variety of functional groups to realize simultaneous adsorption of Cd2+, Pb2+, Hg2+, and As3+. The material was characterized by TEM-EDS, XRD, FT-IR, VSM, and XPS. Kinetic and isothermal analyses suggested mainly chemisorption processes of heavy metal ions that form multiple layers on heterogeneous surfaces. Theoretical adsorption capacities calculated by a pseudo-2nd-order kinetic model and the Sips isothermal model were 282.88 mg/g for Cd2+, 326.18 mg/g for Pb2+, 117.85 mg/g for Hg2+, and 320.29 mg/g for As3+. m-P6 not only can efficiently adsorb divalent heavy metals (Cd2+, Pb2+, Hg2+), but also demonstrate a process of adsorption-driven catalytic oxidation by single-electron transfer (SET) from As3+ to As5+. In application, in addition to adsorption in water, m-P6 is capable of minimizing matrix interference, and extracting trace heavy metals in a complex environment (cereal) through easy operations for improving the detection accuracy, as well as it is potential for application in detection of trace heavy metals in foodstuffs. m-P6 can be readily regenerated and efficiently recycled for 5 cycles using eluent E12 and dilute acid.
科研通智能强力驱动
Strongly Powered by AbleSci AI