Synthesis of graphene oxide nanoribbons/chitosan composite membranes for the removal of uranium from aqueous solutions

2020 ◽  
Vol 14 (6) ◽  
pp. 1029-1038 ◽  
Author(s):  
Xuewen Hu ◽  
Yun Wang ◽  
Jinbo Ou Yang ◽  
Yang Li ◽  
Peng Wu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Aqueous Solutions ◽  
Composite Membranes ◽  
Graphene Oxide Nanoribbons ◽  
Chitosan Composite

scholarly journals Chitosan/Graphene Oxide Nanocomposite Membranes as Adsorbents with Applications in Water Purification

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1687 ◽  
Author(s):  
Alexa-Maria Croitoru ◽  
Anton Ficai ◽  
Denisa Ficai ◽  
Roxana Trusca ◽  
Georgiana Dolete ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Graphene Oxide ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Inductively Coupled Plasma ◽  
Heavy Metal Ions ◽  
Ethylenediaminetetraacetic Acid ◽  
Composite Membranes ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry

The scope of this article is to develop composite membranes using chitosan (CS) and graphene oxide (GO) as adsorbents for the removal of inorganic pollutants such as heavy metal ions, particularly Pb2+, from aqueous solutions. GO was obtained by modified Hummers method and blended with CS solution. The introduction of ethylenediaminetetraacetic acid (EDTA) compound to CS/GO suspension lead to an increased adsorption capacity of CS/GO for the elimination of heavy metals by forming stable chelates with them. The synthesized membranes were examined by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM), and the adsorption behaviour of Pb2+ from aqueous solutions using CS/EDTA/GO membranes was evaluated using inductively coupled plasma mass spectrometry (ICP-MS). The adsorption performance of Pb2+ ions was studied by monitoring the concentration of Pb2+ against the adsorption period at an initial content of the adsorbent. The maximum adsorption efficiency of Pb2+ metal ions reached 767 mg·g−1 for CS/EDTA/GO 0.1%, 889 mg·g−1 for CS/EDTA/GO 0.3%, 970 mg·g−1 for CS/EDTA, 853 mg·g−1 for CS and 1526 mg·g−1 for GO. These findings show promising potential for CS/EDTA/GO membranes as effective adsorbent materials for the removal of heavy metal ions in water.

Fabrication of hydrothermally reduced graphene oxide/chitosan composite membranes with a lamellar structure on methanol dehydration

Carbon ◽  
2017 ◽  
Vol 117 ◽  
pp. 112-119 ◽  
Author(s):  
Wei-Song Hung ◽  
Sue-Min Chang ◽  
Rumwald Leo G. Lecaros ◽  
Yan-Li Ji ◽  
Quan-Fu An ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Lamellar Structure ◽  
Composite Membranes ◽  
Methanol Dehydration ◽  
Reduced Graphene ◽  
Chitosan Composite

Using a simple method to prepare UiO‐66‐NH 2 /chitosan composite membranes for oil–water separation

2021 ◽  
pp. 50765
Author(s):  
Ximei Zhu ◽  
Zongxue Yu ◽  
Haojie Zeng ◽  
Xiaofang Feng ◽  
Yuchuan Liu ◽  
...  
Keyword(s):  
Composite Membranes ◽  
Simple Method ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Chitosan Composite

Enhancement of self-powered humidity sensing of graphene oxide–based triboelectric nanogenerators by addition of graphene oxide nanoribbons

2021 ◽  
Vol 188 (8) ◽  
Author(s):  
Faezeh Ejehi ◽  
Raheleh Mohammadpour ◽  
Elham Asadian ◽  
Somayeh Fardindoost ◽  
Pezhman Sasanpour
Keyword(s):  
Graphene Oxide ◽  
Humidity Sensing ◽  
Graphene Oxide Nanoribbons ◽  
Self Powered ◽  
Triboelectric Nanogenerators
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