Polypyrrole modified Fe0 -loaded graphene oxide for the enrichment of uranium(vi) from simulated seawater

Dalton Transactions : an International Journal of Inorganic Chemistry
Yiming ZhangJun Wang

Abstract

Extraction of uranium(vi) from seawater has attracted much attention for its potential use in the nuclear energy field. In this work, we synthesized graphene oxide-polypyrrole (GO-PPy) through pyrrole monomer polymerization on graphene oxide (GO) with an aqueous solution at low temperature and prepared reduced graphene oxide-polypyrrole-zero-valent iron (rGO-PPy-Fe0) composites by chemical deposition. We characterized rGO-PPy-Fe0 using transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The rGO-PPy-Fe0 composites were investigated for the removal of uranium from aqueous solution and simulated seawater. The experimental results demonstrated that the rGO-PPy-Fe0 adsorbent possessed a superior capacity for the adsorption of uranium at mg g-1 and μg g-1 at the pH value of seawater. The adsorption process conformed to the pseudo-second-order rate equation and the Langmuir isotherm model. Based on X-ray photoelectron spectroscopy (XPS), we revealed the possible adsorption mechanism of uranium onto rGO-PPy-Fe0, which simulated a prospective potential of the adsorbent in seawater.

References

Mar 13, 2008·Dalton Transactions : an International Journal of Inorganic Chemistry·Patricia J MelfiJonathan L Sessler
Jan 15, 2013·Environmental Science & Technology·Richard L JohnsonGregory V Lowry
Oct 5, 2013·Journal of Environmental Radioactivity·Shuiping ChenJizhen Yang
Feb 18, 2015·Journal of the American Chemical Society·Lan Ling, Wei-Xian Zhang
Jan 14, 2016·Scientific Reports·Feihong WangJun Wang
Mar 30, 2017·ACS Applied Materials & Interfaces·Baiyan LiShengqian Ma
Jul 29, 2017·ACS Applied Materials & Interfaces·Marek PiechowiczWenbin Lin
Nov 3, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Xintao WeiJun Wang
Nov 9, 2017·Physical Chemistry Chemical Physics : PCCP·Eugene S IltonPaul S Bagus
Nov 14, 2017·Journal of Colloid and Interface Science·Shengxia DuanJiaxing Li
May 10, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Wei XiaoJun Hu
May 15, 2018·ACS Sustainable Chemistry & Engineering·Timon RijnaartsKitty Nijmeijer

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Citations

Aug 6, 2019·ACS Applied Materials & Interfaces·Briana AguilaShengqian Ma
Oct 19, 2021·The Science of the Total Environment·Jiao TangNing Pan

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