Removal of Pb(II) using silver nanoparticles deposited graphene oxide: equilibrium and kinetic studies

被引：15

作者：

Gari, Venkata Ramana Dandu Kamakshi ^{[1
]}

Kim, Min ^{[1
]}

机构：

[1] Dongguk Univ, Dept Safety Engn, Gyeongju 780714, Gyeongbuk, South Korea

来源：

MONATSHEFTE FUR CHEMIE | 2015年 / 146卷 / 09期

关键词：

Graphene oxide; IR spectroscopy; Metals; Raman spectra; Adsorption; Isotherms; SELECTIVE ADSORPTION; AQUEOUS-SOLUTIONS; METAL-IONS; SURFACE; CD(II); CU(II); DYES;

D O I：

10.1007/s00706-015-1429-4

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Silver nanoparticles-decorated graphene oxide (Ag-GO) composites as advanced metal ion adsorbents have been synthesized. The silver nanoparticles (Ag-NPs) were homogeneously deposited onto graphene oxide (GO) surface by an optimal method, in which N,N-dimethylformamide as a co-dispersant is added to an aqueous suspension of GO and AgNO3. The Fourier transform infrared spectroscopy, scanning electron microscopy, and transmission electron microscopy indicates that GO and Ag-GO are fully exfoliated. The synthesized Ag-GO NPs were used for removal of Pb(II) metal ions. The experiments showed that the removal of metal ions followed a pseudo-second-order kinetic model and equilibrium adsorption studies confirmed that the Langmuir model provided a better fit than others as revealed by high correlation coefficients and low Chi-square values. These Ag-GO NPs can be successfully used for the separation of Pb(II) from aqueous solutions.

引用

页码：1445 / 1453

页数：9

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