Enhanced adsorption of malathion and phoxim by a three-dimensional magnetic graphene oxide-functionalized citrus peel-derived bio-composite

2021 ◽  
Author(s):  
Shurui Cao ◽  
Yue Zhou ◽  
Cunxian Xi ◽  
Tiantian Tang ◽  
Zhiqiong Chen
Keyword(s):  
Graphene Oxide ◽  
Three Dimensional ◽  
One Pot ◽  
Citrus Peel ◽  
Magnetic Graphene Oxide ◽  
Magnetic Graphene ◽  
Enhanced Adsorption

Integrating the steps of direct magnetization and one-pot pyrolysis, a three-dimensional (3D) magnetic graphene oxide-functionalized citrus peel-derived bio-composite (mGOBC) was synthesized and characterized successfully, which was proved to possess three-dimensional...

Polyethylenimine modified magnetic graphene oxide nanocomposites for Cu2+ removal

RSC Advances ◽  
2015 ◽  
Vol 5 (1) ◽  
pp. 746-752 ◽  
Author(s):  
Ning Sui ◽  
Lina Wang ◽  
Xiaohan Wu ◽  
Xinghua Li ◽  
Jing Sui ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Magnetic Graphene Oxide ◽  
Adsorption Performance ◽  
Magnetic Graphene ◽  
Enhanced Adsorption ◽  
Chemical Strategy

GO/Fe3O4/PEI nanocomposites were prepared by chemical strategy, they show enhanced adsorption performance for Cu2+ due to the extraordinary complex ability of PEI. Moreover, they can be easily separated due to the superparamagnetism of Fe3O4.

scholarly journals Cysteic acid grafted to magnetic graphene oxide as a promising recoverable solid acid catalyst for the synthesis of diverse 4H-chromene

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Firouz Matloubi Moghaddam ◽  
Mohammad Eslami ◽  
Golfamsadat Hoda
Keyword(s):  
Graphene Oxide ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Cysteic Acid ◽  
One Pot ◽  
Magnetic Graphene Oxide ◽  
Magnetic Graphene ◽  
Synthesis Methodology ◽  
Short Time

Abstract4H-chromenes play a significant role in natural and pharmacological products. Despite continuous advances in the synthesis methodology of these compounds, there is still a lack of a green and efficient method. In this study, we have designed cysteic acid chemically attached to magnetic graphene oxide (MNPs·GO-CysA) as an efficient and reusable solid acid catalyst to synthesize 4H-chromene skeletons via a one-pot three components reaction of an enolizable compound, malononitrile, an aldehyde or isatin, and a mixture of water–ethanol as a green solvent. This new heterogeneous catalyst provides desired products with a good to excellent yield, short time, and mild condition. This procedure presents an environmentally friendly approach for the synthesis of a great number of 4H-chromene derivatives.

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