| Autor: |
ZOU Jing, WANG Fanghui, YANG Yanli, MA Shaohua |
| Zdroj: |
China Plastics / Zhongguo Suliao; 4/26/2019, Vol. 33 Issue 4, p17-21, 5p |
| Abstrakt: |
The graphene oxide (GO) was prepared by a modified hummer's method and then reacted with a proper amount of cyclodextrin solution, hydrazine hydrate and ammonia water to obtain a cyclodextrin/GO composite. The amounts of adsorption of the composite for Cu2+ were measured at different pH values, time and temperatures. The results indicated that the cyclodextrin/GO composite exhibited an excellent adsorption capability to Cu2+ in aqueous solutions, and its adsorption capacity reached 212. 44 mg/g after 24 h under the neutral condition, presenting the adsorption efficiency of 83. 46 %. Such a result was mainly due to the large surface area of the graphene oxide and the electrostatic attraction of the surface oxygen-containing groups to Cu2+ as well as the cavity structure of cyclodextrin. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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