Suspended graphene oxide nanoparticle for accelerated multilayer osteoblast attachment

2017 ◽  
Vol 106 (1) ◽  
pp. 293-303 ◽  
Author(s):  
Tahereh Foroutan ◽  
Negin Nazemi ◽  
Mohadeseh Tavana ◽  
Mohammad Zaman Kassaee ◽  
Elaheh Motamedi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Suspended Graphene ◽  
Oxide Nanoparticle ◽  
Osteoblast Attachment

scholarly journals Fabrication of Graphene Oxide/Zinc Oxide Hybrid Nanocomposite and Assessment on Structural, Thermal and Optical Characterizations

2020 ◽  
Vol 32 (4) ◽  
pp. 881-886
Author(s):  
Sanoop Padinhattayil ◽  
K. Sheshappa Rai
Keyword(s):  
Zinc Oxide ◽  
Graphene Oxide ◽  
Crystal Size ◽  
Functional Group ◽  
Group Identification ◽  
Thermogravimetric Analyzer ◽  
Research Activities ◽  
Structural Nature ◽  
Oxide Nanoparticle ◽  
Thermal Stability Of

The present work provides a selective review of research activities that focus on the graphene oxide (GO) and zinc oxide (ZnO) hybrid nanomaterials and their physical characterizations. The graphene oxide nanoparticle was prepared by modified Hummer’s method and the nanohybrids of GO/ZnO prepared by chemical method. Nanohybrids were characterized by thermogravimetric analyzer to find the thermal stability of the hybrid material, the structural nature and crystal size by P-XRD, functional group identification and surface morphology by using FTIR & SEM technique. This method provides a facile method to synthesize the nanohybrid and will be freely extended to do the research on other class of hybrids based of graphene oxide.

scholarly journals Enhancement of the electro-activated persulfate process in dye removal using graphene oxide nanoparticle

2021 ◽  
Author(s):  
Bita Ayati ◽  
Zeinab Ghorbani
Keyword(s):  
Graphene Oxide ◽  
Current Density ◽  
Dye Removal ◽  
Electrochemical Process ◽  
Sodium Persulfate ◽  
Sulfate Concentration ◽  
Oxide Nanoparticle ◽  
Acid Blue ◽  
A Current ◽  
Activated Persulfate

Abstract This study aimed to improve the speed of the electrochemical process by graphene oxide nanoparticle as a current accelerator in Acid Blue 25 removal from aqueous solutions. To do so, the effect of different parameters including pH, dye concentration, sodium persulfate concentration, the ratio of sodium persulfate to iron (II) sulfate concentration, current density, and the distance between electrodes was investigated on dye removal. Under optimal conditions of pH = 5, dye concentration = 200 mg/L, sodium persulfate concentration = 500 mg/L, iron (II) sulfate concentration = 100 mg/L, current density = 16.67 mA/cm2, and electrode distance = 2 cm, 95% of dye was removed after 60 minutes in the electro-activated persulfate process; while the modified electro-activated persulfate process achieved 95% dye removal after only 40 minutes under the same conditions. This system was able to remove 90% of dye after 60 minutes at a higher concentration (300 mg/L). Also, the modified electro-activated persulfate process obtained the removal of 80% of COD, and 54% of TOC after 180 minutes in the mentioned conditions, for the dye concentration of 300 mg/L.

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