PDF
Full
Outline
To address the issues of low conversion rate of aromatic amine monomers and high consumption of oxidants in polymerization reactions, the synthesis of polymeric Schiff base nanoparticles using m-phenylenediamine and glutaraldehyde as monomers through aldol-amino condensation reaction and their application in the adsorption and removal of Cu(Ⅱ) from wastewater were investigated. The morphology and structure of the products were characterized, and the thermal stability, acid stability, and adsorption mechanism of the material for Cu(Ⅱ) in wastewater were analyzed. The results show that the amino and aldehyde groups underwent nucleophilic addition to form a Schiff base structure, and the products are spherical nanoparticles with diameters ranging from 100 to 400 nm. The $\mathrm{C}=\mathrm{N}$ structure of the polymeric Schiff base has good thermal stability and acid stability, and the adsorption process of Cu(Ⅱ) conforms to the characteristics of the Langmuir isothermal adsorption model and the pseudo-second-order kinetic model. Under optimized conditions, the equilibrium adsorption capacity of the polymeric Schiff base for Cu(Ⅱ) is 116.30 mg/g, which is superior to that of common biochar, magnetic iron, and other polymer materials. The adsorption mechanism of the polymeric Schiff base for Cu(Ⅱ) is mainly electrostatic interaction and show strong coordination ability.
PDF
420
192
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
