scholarly journals Efficient Removal Of U(VI) Ions from Aqueous Solutions by Tannic Acid/Graphene Oxide Composites

2020 ◽  
Vol 10 (24) ◽  
pp. 8870
Author(s):  
Bowu Zhu ◽  
Zhen Zhang ◽  
Fuxiang Song ◽  
Zhijun Guo ◽  
Bin Liu
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Tannic Acid ◽  
Selective Adsorption ◽  
Low Ph ◽  
Maximum Adsorption Capacity ◽  
Efficient Removal ◽  
Characterization Methods ◽  
Uranium Ions ◽  
Oxide Composites

Tannic acid/graphene oxide (TA/GO) composites were prepared in the present research, and their properties and sorption performance were evaluated by corresponding characterization methods and bath sorption experiments, respectively. The applications of TA/GO to remove U(VI) from aqueous solution were investigated with the maximum adsorption capacity of 87.8 mg·g−1 at low pH (pH = 3.6 ± 0.03). The sorption of U(VI) ions on TA/GO followed the Langmuir model because of the complexation of oxygen-containing functional groups on the surface of TA/GO composites and uranium ions. TA/GO manifested excellent selective adsorption toward uranium ions with other metal ions (Cs+, Sr2+, Co2+). Furthermore, TA/GO as an effective adsorbent was reused to remove a large amount of U(VI) ions from aqueous solution. Therefore, TA/GO is an ideal material to remove highly toxic U(VI) ions from wastewater.

One-pot hydrothermal synthesis of hematite-reduced graphene oxide composites for efficient removal of malachite green from aqueous solution

RSC Advances ◽  
2015 ◽  
Vol 5 (22) ◽  
pp. 17336-17342 ◽  
Author(s):  
Airong Liu ◽  
Wen Zhou ◽  
Kaile Shen ◽  
Jing Liu ◽  
Xixi Zhang
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Hydrothermal Synthesis ◽  
Reduced Graphene Oxide ◽  
Malachite Green ◽  
Efficient Removal ◽  
Hydrothermal Conditions ◽  
One Pot ◽  
Reduced Graphene ◽  
Oxide Composites

The α-Fe2O3–rGO materials prepared by one-pot hydrothermal conditions exhibit an excellent capacity to remove MG from water.

Efficient removal of Cs(I) from aqueous solution using graphene oxide

2020 ◽  
Vol 119 ◽  
pp. 103167 ◽  
Author(s):  
Min Xing ◽  
Shuting Zhuang ◽  
Jianlong Wang
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Efficient Removal

Fabrication of zirconium (IV)-loaded chitosan/Fe3O4/graphene oxide for efficient removal of alizarin red from aqueous solution

2020 ◽  
Vol 248 ◽  
pp. 116792 ◽  
Author(s):  
Mingyu Liu ◽  
Xiaoting Zhang ◽  
Zhaohui Li ◽  
Lingbo Qu ◽  
Runping Han
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Efficient Removal ◽  
Alizarin Red

Persimmon tannin/graphene oxide composites: Fabrication and superior adsorption of germanium ions in aqueous solution

2019 ◽  
Vol 104 ◽  
pp. 310-317 ◽  
Author(s):  
Yingying Zhang ◽  
Xinzhu Li ◽  
Lifeng Gong ◽  
Zhiqiang Xing ◽  
Zhenning Lou ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Oxide Composites

Preparation of bio-based magnetic adsorbent and application for efficient removal of Cd(II) from water

2018 ◽  
Vol 77 (5) ◽  
pp. 1313-1323 ◽  
Author(s):  
Jianjun Zhou ◽  
Xionghui Ji ◽  
Xiaohui Zhou ◽  
Jialin Ren ◽  
Yaochi Liu
Keyword(s):  
Aqueous Solution ◽  
Adsorption Process ◽  
Low Cost ◽  
Maximum Adsorption Capacity ◽  
Magnetic Adsorbent ◽  
Order Model ◽  
Efficient Removal ◽  
Adsorption Ability ◽  
Adsorption Sites ◽  
Pseudo Second Order

Abstract A novel magnetic bio-adsorbent (MCIA) was developed, characterized and tested for its Cd(II) removal from aqueous solution. MCIA could be easily separated from the solution after equilibrium adsorption due to its super-paramagnetic property. The functional and magnetic bio-material was an attractive adsorbent for the removal of Cd(II) from aqueous solution owing to the abundant adsorption sites, amino-group and oxygen-containing groups on the surface of Cyclosorus interruptus. The experimental results indicated that the MCIA exhibited excellent adsorption ability and the adsorption process was spontaneous and endothermic. The adsorption isotherm was consistent with the Langmuir model. The adsorption kinetic fitted the pseudo-second-order model very well. The maximum adsorption capacity of Cd(II) onto MCIA was 40.8, 49.4, 54.6 and 56.6 mg/g at 293, 303, 313 and 323 K, respectively. And the MCIA exhibited an excellent reusability and impressive regeneration. Therefore, MCIA could serve as a sustainable, efficient and low-cost magnetic adsorbent for Cd(II) removal from aqueous solution.

scholarly journals Facile synthesis of MoS2/reduced graphene oxide composites for efficient removal of Cr(vi) from aqueous solutions

RSC Advances ◽  
2017 ◽  
Vol 7 (39) ◽  
pp. 24149-24156 ◽  
Author(s):  
Xiaolu Jiang ◽  
Hanjin Luo ◽  
Yuwei Yin ◽  
Weijia Zhou
Keyword(s):  
Heavy Metal ◽  
Graphene Oxide ◽  
Aqueous Solutions ◽  
Reduced Graphene Oxide ◽  
High Toxicity ◽  
Efficient Removal ◽  
Facile Synthesis ◽  
Reduced Graphene ◽  
Metal Contaminate ◽  
Oxide Composites

Cr(vi) as a common heavy metal contaminate has attracted much attention for its high toxicity and bioaccumulation.

Synthesis and application of magnetic reduced graphene oxide composites for the removal of bisphenol A in aqueous solution—a mechanistic study

RSC Advances ◽  
2016 ◽  
Vol 6 (104) ◽  
pp. 102348-102358 ◽  
Author(s):  
Penglei Wang ◽  
Xin Zhou ◽  
Yagang Zhang ◽  
Lulu Wang ◽  
Keke Zhi ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Bisphenol A ◽  
Reduced Graphene Oxide ◽  
Mechanistic Study ◽  
Reduction Degree ◽  
Reduced Graphene ◽  
Oxide Composites ◽  
Magnetic Reduced Graphene Oxide

Magnetic reduced graphene oxide composites (MRGO) with different reduction degree for removal of bisphenol A from aqueous solution

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