还原态氧化石墨烯的制备及其对重金属离子的吸附性能

doi:10.3724/SP.J.1095.2014.30311

摘要/Abstract

摘要： 通过乙二胺（EDA）对氧化石墨烯（GO）进行还原制备了还原态氧化石墨烯（RGO），利用红外光谱、拉曼光谱、热重分析和扫描电子显微镜等技术对制得的RGO进行了表征。考察了RGO复合材料在静态吸附条件下对Pb(Ⅱ)、Cd(Ⅱ)、Cu(Ⅱ)和Mn(Ⅱ)金属离子的吸附性能。结果表明，该吸附材料对上述4种重金属离子在25 ℃时的静态饱和吸附量分别为396.6、115.3、54.2和38.6 mg/g。吸附于RGO上的Pb(Ⅱ)可用0.05 mol/L HCl溶液进行洗脱，再生后的RGO重复使用3次时吸附量能达到首次吸附量的85%。

关键词: 氧化石墨烯, 重金属, 吸附

Abstract: Reduced graphene oxide(RGO) was prepared by reducing graphene oxide(GO) with ethylenediamine(EDA). The RGO was characterized by Fourier transform infrared spectroscopy(FT-IR), Raman spectroscopy(Raman), thermogravimetric analysis(TGA), and scanning electron microscopy(SEM). The adsorption behaviors of the RGO toward Pb(Ⅱ), Cd(Ⅱ), Cu(Ⅱ) and Mn(Ⅱ) were studied. The adsorption capacities of RGO are found to be 396.6, 115.3, 54.2 and 38.6 mg/g for Pb(Ⅱ), Cd(Ⅱ), Cu(Ⅱ) and Mn(Ⅱ), respectively. The adsorbed Pb(Ⅱ) on the RGO can be desorbed in 0.05 mol/L HCl solution. After three cycles of adsorption and desorption, the adsorption capacity of RGO toward Pb(Ⅱ) can remain above 85% of the first adsorption amount.

Key words: graphene oxide, heavy metal ions, adsorption

中图分类号:

O647.3

王波, 张帆, 黄福. 还原态氧化石墨烯的制备及其对重金属离子的吸附性能[J]. 应用化学, DOI: 10.3724/SP.J.1095.2014.30311.

WANG Bo, ZHANG Fan*, HUANG Fu. Preparation of Reduced Graphene Oxide And Its Adsorption Property for Heavy Metal Ions[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2014.30311.

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