以废胺肟树脂制备磁性碳复合材料及其对铬的吸附性能

Preparation of Magnetic Carbon Composite from Waste Amine-Oxime Resin and Its Adsorption Properties for Chromium.

作者信息

Wang Haoyu, Su Xianzhuo, Yu Hongdan, Yuan Yuhang, Wu Jing, Yang Wenchao, He Chunlin

机构信息

Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured Materials, Key Laboratory of High Performance Structural Materials and Thermo-Surface Processing, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China.

Technical Innovation Center of Mine Geological Environmental Restoration Engineering in Southern Karst Area, Ministry of Natural Resources, Nanning 530028, China.

出版信息

Materials (Basel). 2025 Jun 27;18(13):3066. doi: 10.3390/ma18133066.

DOI:10.3390/ma18133066

PMID:40649554

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12251462/

Abstract

A waste amidoxime chelate resin (WAR) was converted into a magnetic composite adsorbent (MCA) via carbonization and magnetization for the effective removal of Cr(VI). Under optimized conditions (pH = 1, 30 °C, 1 h), the adsorbent achieved a maximum Cr(VI) adsorption capacity of 197.63 mg/g. The adsorption process conformed to the pseudo-second-order kinetic model (R > 0.98) and Langmuir isotherm model (R > 0.99). The materials can be separated by magnetism. The primary mechanism for the adsorption of Cr(VI) involved monolayer chemisorption. FTIR spectroscopy confirmed the dominant role of -C=O, C-O, and Fe-O in the adsorption process. XPS spectroscopy confirmed the dominant role of -C=O and C-O in the adsorption process. The successful conversion of the WAR into an MCA not only mitigates waste accumulation but also provides a cost-effective strategy for heavy metal remediation.

摘要

通过碳化和磁化将废偕胺肟螯合树脂（WAR）转化为磁性复合吸附剂（MCA），以有效去除Cr(VI)。在优化条件（pH = 1、30℃、1小时）下，该吸附剂对Cr(VI)的最大吸附容量达到197.63 mg/g。吸附过程符合准二级动力学模型（R > 0.98）和朗缪尔等温线模型（R > 0.99）。该材料可通过磁性分离。Cr(VI)的吸附主要机制涉及单层化学吸附。傅里叶变换红外光谱证实了-C=O、C-O和Fe-O在吸附过程中的主导作用。X射线光电子能谱证实了-C=O和C-O在吸附过程中的主导作用。将WAR成功转化为MCA不仅减轻了废物积累，还为重金属修复提供了一种经济高效的策略。