Adsorption behavior of magnetic triethylene tetramine-graphene oxide nanocomposite for Cu<sup>2+</sup>

CHEN Fangni; SUN Xiaojun; WEI Jinzhi; LIU Xianbin; HU Qin

doi:10.11949/j.issn.0438-1157.20151130

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Adsorption behavior of magnetic triethylene tetramine-graphene oxide nanocomposite for Cu²⁺

更新时间：2025-12-10

- Adsorption behavior of magnetic triethylene tetramine-graphene oxide nanocomposite for Cu²⁺
- CIESC Journal Issue 5, Pages: 1949-1956(2016)
- 作者机构：
  
  哈尔滨理工大学化学与环境工程学院,黑龙江,哈尔滨,150040
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20151130
  CLC： 592
- Online First：05 May 2016，
  
  Published：05 May 2016
- 稿件说明：
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CHEN Fangni, SUN Xiaojun, WEI Jinzhi, et al. Adsorption behavior of magnetic triethylene tetramine-graphene oxide nanocomposite for Cu²⁺[J]. CIESC Journal, 2016, (5): 1949-1956. DOI: 10.11949/j.issn.0438-1157.20151130.
DOI：

CHEN Fangni, SUN Xiaojun, WEI Jinzhi, et al. Adsorption behavior of magnetic triethylene tetramine-graphene oxide nanocomposite for Cu²⁺[J]. CIESC Journal, 2016, (5): 1949-1956. DOI: 10.11949/j.issn.0438-1157.20151130. DOI：

摘要

为了提高氧化石墨烯(GO)的吸附能力和分离效果

采用恒温搅拌法和水热法制备磁性三乙烯四胺氧化石墨烯(M-T-GO)复合吸附剂。通过X射线衍射(XRD)、傅里叶红外光谱(FT-IR)和透射电镜(TEM)测试方法对其进行表征

并对M-T-GO对Cu2+的pH、吸附动力学、吸附等温线和吸附热力学进行研究。结果表明

M-T-GO对Cu2+的吸附符合二级反应动力学和Langmuir吸附等温式描述

吸附反应为自发吸热过程

饱和吸附量为245.09 mg·g-1

同时具有快速分离和易再生的优点。采用X射线光电子能谱(XPS)推测M-T-GO对Cu2+的吸附机理

结果表明M-T-GO主要通过螯合作用和静电引力对Cu2+进行吸附。

Abstract

A novel composite adsorbent of magnetic triethylene tetramine graphene oxide (M-T-GO) was firstly prepared by isothermal stirring and hydrothermal method to improve adsorption ability and separation efficiency of graphene oxide (GO). M-T-GO was characterized by Fourier transform infrared spectrometer (FT-IR)

X-ray diffraction (XRD) and transmission electron microscope (TEM)

respectively. The pH

adsorption kinetics

isotherms and thermodynamics of Cu2+ on M-T-GO were studied

indicating that the adsorptions kinetic was well fitted by pseudo-second-order model and the equilibrium adsorption was well described with Langmuir model. The saturated adsorption capacity of Cu2+ was about 245.09 mg·g-1 on M-T-GO. M-T-GO could make separation of the adsorbents easy in the foreign magnetic field and possess good performance of regeneration. The adsorption process of Cu2+ was spontaneous and endothermic by the calculated thermodynamic parameters. X-ray photoelectron spectroscopy (XPS) spectra suggested that Cu2+ was adsorbed on M-T-GO mainly through the chelation and electrostatic attraction.

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Adsorption behavior of magnetic triethylene tetramine-graphene oxide nanocomposite for Cu2+

DOI：10.11949/j.issn.0438-1157.20151130

摘要

Abstract

关键词

Keywords

references

Adsorption behavior of magnetic triethylene tetramine-graphene oxide nanocomposite for Cu²⁺