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Study on Preparation and Cu2+ Ions AdsorptionCharacterization of Magnetic Graphene Oxide(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2017年04期
Page:
70-
Research Field:
·化学·
Publishing date:

Info

Title:
Study on Preparation and Cu2+ Ions AdsorptionCharacterization of Magnetic Graphene Oxide
Author(s):
Ni Yuan; Ma Yan
School of Environmental Science and Engineering,Nanjing University of Information Science and Technology,Nanjing 210044,China
Keywords:
magnetic graphene oxide; absorption; cupric ions; pseudo second kinetics
PACS:
TQ138.1
DOI:
10.3969/j.issn.1001-4616.2017.04.011
Abstract:
We synthesized 2D graphene oxide with Hummers’ method,endowed the graphene oxide with magnetism by Fe3O4 that was prepared by in situ synthesis,and finally obtained magnetic graphene oxide with high magnetism and good adsorption efficiency for cupric ion. In the synthesis,alkaline liquor was replaced with NH3·H2O-NH4Cl buffer solution. This overcame the drawback from traditional ways in which the property of products is compromised due to the continuous decrease in the pH value of systems. The result of TEM showed that the magnetic graphene oxide possessed excellent 2D layered structure. The results of magnetic property and adsorption experiment showed that the magnetic graphene oxide had strong magnetism and outstanding adsorption efficiency for cupric ion. The result of adsorption kinetics suggested that the adsorption is a process of pseudo second kinetics and has an adsorption way where chemical adsorption mechanism controls the speed.

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Last Update: 2017-12-30