文献类型：期刊文献

英文题名：Investigating the Adsorption Behavior and Mechanism of Eu(III) and Au(III) on β-cyclodextrin/polyethylenimine Functionalized Waste Paper

作者：Liu, Fenglei[1]; Hua, Shan[1]; Hu, Qingyuan[1]; Wang, Chao[1]; Hu, Baowei[1]

机构：[1] Shaoxing University, China

年份：2021

外文期刊名：ResearchSquare

收录：EI(收录号：20220202968)

语种：英文

外文关键词：Europium compounds - Functional materials - Gold compounds - Morphology - Water pollution

外文摘要：A bio-adsorbent (DAWP-PEI-β-CD) was facilely prepared by introducing polyethylenimine (PEI) and βcyclodextrin (β-CD) into dialdehyde waste paper (DAWP) via a facile two-step method. Various physicochemical and spectroscopic techniques (FT-IR, XRD, SEM, NMR, XPS) were applied to characterize the structure, morphology and composition of the as-prepared adsorbents. Investigation results showed that the pH values, reaction temperature and contact time played a vital role in uptake of Eu(III) and Au(III). Meanwhile, the adsorption behavior of Eu(III) and Au(III) could be fitted felicitously with the Langmuir and the Pseudo-second-order models, and the saturated adsorption amounts of Eu(III) (pH = 6.0) and Au(III) (pH = 2.0) onto DAWP-PEI-β-CD were 424.2 and 241.3 mg/g, respectively. Further advanced spectroscopy analysis revealed that the elimination of Eu(III) was attributed to host-guest inclusion and surface complexation interaction, while adsorption of Au(III) might stem from a combination of electrostatic attraction, chelation, host-guest inclusion and redox interaction. This study demonstrated that DAWP-PEI-β-CD was a promising environmental functional material to separation and enrichment of Eu(III) and Au(III) from contaminated water. ? 2021, CC BY.