Journal ArticleDOI
Removal of Th4+ ions from aqueous solutions by graphene oxide
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TLDR
In this paper, the removal of Th4+ ions from aqueous solutions was investigated using single-layer graphene oxide (GO) as a sorbent which was prepared by the modified Hummers method through batch adsorption experiments at room temperature.Abstract:
The removal of Th4+ ions from aqueous solutions was investigated using single-layer graphene oxide (GO) as a sorbent which was prepared by the modified Hummers’ method through batch adsorption experiments at room temperature. Structural characterizations of the sorbent were also investigated. The influences of the pH value of solution, contact time, sorbent dose, ionic strength, the initial metal ion concentration and temperature on the adsorption of Th4+ were also investigated. These results indicated that the adsorption of Th4+ was dependent on the pH and independent on the ionic strength. The sorbent provided significant Th4+ removal (>98.7 %) at pH 3.0 and the adsorption equilibrium was achieved after only 10 min. The Langmuir adsorption isotherm fit the absorption profile very closely, and indicated that a maximum adsorption capacity of 1.77 mmol g−1 of GO (411 mg g−1) after 2 h. The thermodynamic parameters showed that this adsorption process was endothermic and spontaneous. Moreover, the desorption level of Th4+ from GO, by using 0.1 mol L−1 H2SO4 as a stripping agent, was 84.2 ± 1.2 %, and that of 0.5 mol L−1 HNO3 as a stripping agent, was 79.8 ± 3.0 %.read more
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Graphene oxide-based materials for efficient removal of heavy metal ions from aqueous solution: A review.
Xiaolu Liu,Ran Ma,Xiangxue Wang,Yan Ma,Yongping Yang,Li Zhuang,Sai Zhang,Riffat Jehan,Jianrong Chen,Xiangke Wang +9 more
TL;DR: This paper aims to summarize recent research results on the excellent removal ability of GO-based nanomaterials for various heavy metal ions in aqueous solutions and provide some thrilling information for the design and manufacture of GOs for the elimination of heavyMetal ions from wastewater in environmental pollution management.
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Synthesis of novel nanomaterials and their application in efficient removal of radionuclides
Xiangxue Wang,Long Chen,Lin Wang,Qiaohui Fan,Duoqiang Pan,Jiaxing Li,Fangting Chi,Yi Xie,Shujun Yu,Chengliang Xiao,Feng Luo,Jun Wang,Xiaolin Wang,Changlun Chen,Wangsuo Wu,Wei-Qun Shi,Shuao Wang,Xiangke Wang +17 more
TL;DR: In this article, a review mainly summarized the recent studies for the synthesis, fabrication and surface modification of novel nanomaterials and their applications in the efficient elimination and solidification of radionuclides, and discussed the interaction mechanisms from batch experiments, spectroscopy analysis and theoretical calculations.
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Graphene nanosheets as novel adsorbents in adsorption, preconcentration and removal of gases, organic compounds and metal ions.
Jingang Yu,Jingang Yu,Lin-Yan Yu,Hua Yang,Qi Liu,Xiao-Hong Chen,Xinyu Jiang,Xiaoqing Chen,Feipeng Jiao +8 more
TL;DR: Graphene nanosheets will challenge the current existing adsorbents, including other types of carbon-based nanomaterials, to remove low concentrated contaminants from aqueous solutions.
Journal ArticleDOI
Graphene-based materials: Fabrication and application for adsorption in analytical chemistry ☆
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Filtration and transport of heavy metals in graphene oxide enabled sand columns
TL;DR: In this paper, a fixed-bed sand column with graphene oxide (GO) layer was used to remove heavy metals (Cu(II) and Pb(II)) from an aqueous solution injected under steady flow.
References
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Journal ArticleDOI
Processable aqueous dispersions of graphene nanosheets
TL;DR: It is reported that chemically converted graphene sheets obtained from graphite can readily form stable aqueous colloids through electrostatic stabilization, making it possible to process graphene materials using low-cost solution processing techniques, opening up enormous opportunities to use this unique carbon nanostructure for many technological applications.
Journal ArticleDOI
Flexible Graphene Films via the Filtration of Water-Soluble Noncovalent Functionalized Graphene Sheets
TL;DR: The work presented here will not only open a new way for preparing water-soluble graphene dispersions but also provide a general route for fabricating conducting films based on graphene.
Journal ArticleDOI
Graphene oxide dispersions in organic solvents.
TL;DR: In all of these solvents, full exfoliation of the graphite oxide material into individual, single-layer graphene oxide sheets was achieved by sonication, and graphene oxide dispersions exhibited long-term stability and were made of sheets between a few hundred nanometers and a few micrometers large.
Journal ArticleDOI
Few-Layered Graphene Oxide Nanosheets As Superior Sorbents for Heavy Metal Ion Pollution Management
TL;DR: The graphene oxide nanosheets may be suitable materials in heavy metal ion pollution cleanup if they are synthesized in large scale and at low price in near future.
Journal ArticleDOI
Self‐Assembled Free‐Standing Graphite Oxide Membrane
Cheng-Meng Chen,Quan-Hong Yang,Quan-Hong Yang,Yong-gang Yang,Wei Lv,Yue-fang Wen,Peng-Xiang Hou,Mao-Zhang Wang,Hui-Ming Cheng +8 more
TL;DR: Chen, Chengmeng, Yang, Quan-Hong; Yang, Yonggang; Lv, Wei; Wen, Yuefang; Wang, Maozhang] Tianjin Univ, Sch Chem Engn & Technol, Key Lab Green Chem Tech, Tianjin 300072, Peoples R China;qhyangcn@tju.edu.cn yangyg@sxicc.ac.cn