Removal of malachite green dye from aqueous solution using reduced graphene oxide as an adsorbent

2021 ◽  
Author(s):  
Dibya Ranjan Rout ◽  
Hara Mohan Jena
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Malachite Green ◽  
Malachite Green Dye ◽  
Reduced Graphene

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.

scholarly journals Central Composite Design Based Adsorption Study of Malachite Green Dye Using Reduced Graphene Oxide Nano-Adsorbent

2021 ◽  
Vol 64 (3) ◽  
pp. 195-205
Author(s):  
Abdul Rauf Shah ◽  
Hajira Tahir ◽  
Hafiz Muhammad Kifayatullah
Keyword(s):  
Graphene Oxide ◽  
Central Composite Design ◽  
Reduced Graphene Oxide ◽  
Malachite Green ◽  
Malachite Green Dye ◽  
Reduced Graphene ◽  
Gibb’S Free Energy ◽  
The Cost ◽  
Central Composite ◽  
Nano Adsorbent

  The adsorption of Malachite Green (MG) dye was well studied and elucidated from the liquid phase using reduced Graphene Oxide (rGO) nano-adsorbent. The desired levels of the factors were determined to be the amount of adsorbent of 0.2 g/L, pH of 8.5, the concentration of the dye as 100 mg/L and the sonication time of 50 min by Central Composite Design (CCD). The removal of the dye was found to be 95% at the optimum levels of the variables. Furthermore, the removal of the dye was higher at the higher values of the amount of adsorbent and pH. Langmuir and Temkin models were observed significant for rGO-MG dye system. The values of Gibb's free energy, the entropy and the enthalpy were found to be -10.502 KJ/mol, 34.314 KJ/mol and 0.147 KJ/mol.K, respectively. The kinetic data were also found well fitted to pseudo second order kinetics model for the said system. Afterwards, the cost of the process was found to be US$0.654/dm3. Therefore, the adsorption process effectively removed the dye from the simulated aqueous phase using rGO nano-adsorbent.  

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
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