A sedimentation study of graphene oxide in aqueous solution using gradient differential centrifugation

2016 ◽  
Vol 18 (17) ◽  
pp. 12312-12322 ◽  
Author(s):  
Jing-Jing Huang ◽  
Yong J. Yuan
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Differential Centrifugation

This work involved the study of sedimentation of graphene oxide (GO) in aqueous solution by gradient differential centrifugation.

scholarly journals Transformation of hydroquinone to benzoquinone mediated by reduced graphene oxide in aqueous solution

Carbon ◽  
2015 ◽  
Vol 89 ◽  
pp. 74-81 ◽  
Author(s):  
Chunmei Li ◽  
Lingyun Li ◽  
Lixiang Sun ◽  
Zhiguo Pei ◽  
Jieli Xie ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene

Advances in Graphene for Adsorption of Heavy Metals in Wastewater

2012 ◽  
Vol 550-553 ◽  
pp. 2121-2124 ◽  
Author(s):  
Ling Ling Luo ◽  
Xing Xing Gu ◽  
Jun Wu ◽  
Shu Xian Zhong ◽  
Jian Rong Chen
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Aqueous Solution ◽  
Graphene Oxide ◽  
Physical Structure ◽  
High Specific Surface Area ◽  
Functionalized Graphene ◽  
Storage Material ◽  
Energy Storage Material ◽  
Material Composite

Graphene for its unique physical structure, excellent mechanical, electrical and physical properties has been widely applied in nanoelectronics, microelectronics, energy storage material, composite materials and so on. In recent years, many researchers found graphene have outstanding adsorption capacity of contaminants in aqueous solution due to its high specific surface area. This paper summarized the graphene, graphene oxide and functionalized graphene removing various heavy metals in waste water.

Photocatalytic CO2 reduction using water as an electron donor by a powdered Z-scheme system consisting of metal sulfide and an RGO–TiO2 composite

2017 ◽  
Vol 198 ◽  
pp. 397-407 ◽  
Author(s):  
Tomoaki Takayama ◽  
Ko Sato ◽  
Takehiro Fujimura ◽  
Yuki Kojima ◽  
Akihide Iwase ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Visible Light ◽  
Water Splitting ◽  
Electron Donor ◽  
Visible Light Irradiation ◽  
Co2 Reduction ◽  
Metal Sulfide ◽  
Electron Donors ◽  
Reduced Graphene

CuGaS2, (AgInS2)x–(ZnS)2−2x, Ag2ZnGeS4, Ni- or Pb-doped ZnS, (ZnS)0.9–(CuCl)0.1, and ZnGa0.5In1.5S4 showed activities for CO2 reduction to form CO and/or HCOOH in an aqueous solution containing K2SO3 and Na2S as electron donors under visible light irradiation. Among them, CuGaS2 and Ni-doped ZnS photocatalysts showed relatively high activities for CO and HCOOH formation, respectively. CuGaS2 was applied in a powdered Z-scheme system combining with reduced graphene oxide (RGO)-incorporated TiO2 as an O2-evolving photocatalyst. The powdered Z-scheme system produced CO from CO2 in addition to H2 and O2 due to water splitting. Oxygen evolution with an almost stoichiometric amount indicates that water was consumed as an electron donor in the Z-schematic CO2 reduction. Thus, we successfully demonstrated CO2 reduction of artificial photosynthesis using a simple Z-scheme system in which two kinds of photocatalyst powders (CuGaS2 and an RGO–TiO2 composite) were only dispersed in water under 1 atm of CO2.

Enhanced photocatalytic reduction activity of uranium(vi) from aqueous solution using the Fe2O3–graphene oxide nanocomposite

2017 ◽  
Vol 46 (43) ◽  
pp. 14762-14770 ◽  
Author(s):  
Yadan Guo ◽  
Yiqin Guo ◽  
Xuegang Wang ◽  
Peng Li ◽  
Liuwei Kong ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Nuclear Industry ◽  
Photocatalytic Reduction ◽  
Potential Solution ◽  
Hexavalent Uranium ◽  
Reduction Activity ◽  
Radioactive Wastewater

Photocatalytic technologies are a potential solution for remediation of radioactive wastewater, including the reduction of radioactive hexavalent uranium, which is commonly found in wastewater from the nuclear industry.

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