气凝胶
吸附
水溶液中的金属离子
生物相容性
纳米颗粒
碳纤维
金属
荧光
离子
化学
无机化学
化学工程
材料科学
核化学
纳米技术
有机化学
复合材料
物理
工程类
复合数
量子力学
作者
Xue-Chun Yang,Song Gao,Shaqi Fu,Yi Xuan,Z. Jiao,Jing‐Tai Zhao,Zhijun Zhang,Lingli Cheng
出处
期刊:Gels
[MDPI AG]
日期:2022-07-22
卷期号:8 (8): 459-459
被引量:2
摘要
Both sodium alginate and polyethyleneimine (PEI) have a good ability to adsorb heavy metal ions. PEI and sodium alginate were used as important precursors to synthesize positively charged carbon nanoparticles (p-CNDs) with hydroxyl and carboxyl, and negatively charged carbon nanoparticles (n-CNDs) with amino, respectively. The carbon nanoparticles (CNDs) aerogel with a large specific surface area and rich functional groups were constructed by self-assembled p-CNDs and n-CNDs via electrostatic attraction for adsorption of heavy metal ions in water. The results show that CNDs aerogel has good adsorption properties for Pb2+ (96%), Cu2+ (91%), Co2+ (86%), Ni2+ (82%), and Cd2+ (78%). Furthermore, the fluorescence emission intensity of CNDs aerogel will gradually decrease with the increase in the adsorption rate, indicating that it can detect the adsorption process synchronously. In addition, the cytotoxicity test reveals that CNDs have good biocompatibility and will not cause secondary damage to biological cells.
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