新型炭材料2013，Vol.28Issue(1)：76-80,5.
磁性炭包铁纳米粒子对重金属离子的吸附性能
Adsorption of heavy metal ions by carbon-coated iron nanoparitcles for
庞晋山 1邓爱华 1毛凌波 2彭晓俊 1朱杰1
作者信息
- 1. 新会出入境检验检疫局,广东江门529100
- 2. 广东工业大学材料与能源学院,广东广州510009
- 折叠
摘要
Abstract
Carbon-coated iron nanoparticles were synthesized by a carbon arc discharge method using electrodes made of iron and graphite powder. The amorphous carbon layer of the carbon-coated iron nanoparticles was treated by a 30% H2O2 aqueous solution. Adsorption of the carbon-coated iron particles for heavy metal ions, such as Cr, Ni, Cd, Pb, Co and Mn, was studied. Results showed that carboxyl and hydroxyl groups were formed on the surface of the amorphous carbon layer after the treatment by hydrogen peroxide. In a strong alkaline medium, the hydroxyl and carboxyl groups increased the electrostatic attraction, and the adsorption performance of the treated carbon-coated iron particles for heavy metal ions was improved. The removal efficiencies for Cr, Ni, Cd, Pb, Co and Mn by the treated carbon-coated iron nanoparticles were all over 90% in a pH range of 8-10 and their adsorption capacity is much higher than that of activated carbons.关键词
炭包铁纳米粒子/重金属离子/吸附性能Key words
Carbon-coated iron nanoparticle/Heavy matal ions/Adsorption property分类
数理科学引用本文复制引用
庞晋山,邓爱华,毛凌波,彭晓俊,朱杰..磁性炭包铁纳米粒子对重金属离子的吸附性能[J].新型炭材料,2013,28(1):76-80,5.
