Hydrothermally Synthesized Co3O4, α-Fe2O3, and CoFe2O4 Nanostructures: Efficient Nano-adsorbents for the Removal of Orange G Textile Dye from Aqueous Media

Nassar, Mostafa Y.; Mohamed, Talaat Y.; Ahmed, Ibrahim S.; Mohamed, Naglaa M.; Khatab, Mai

doi:10.1007/s10904-017-0613-x

Cited by 35 publications

(16 citation statements)

References 51 publications

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“…Copper oxide Cu4O3 is known as paramelaconite material in tetragonal shape. Copper nanoparticles synthesis by using green tea has Nano range particle size confirmed by characterization [25][26][27][28]. This is One-step processes in which no surfactants and other capping agents used.…”

Section: Research Article Backgroundmentioning

confidence: 88%

Kinetic Isotherm Studies of Azo Dyes by Metallic Oxide Nanoparticles Adsorbent

Batool¹

2018

AOICS

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We reported the synthesis of Cu 4 O 3 nanoparticles fabricated by Camellia Sinensis (green tea) leaves extract as reducing and stabilizing agent and studied the azo dyes removal efficiency. The formation of copper oxide nanoparticles was confirmed after change in solution of salt and plant extract from green to pale yellow. Subsequently, the above said nanoparticles were characterized by SEM, XRD, FTIR, and UV spectrophotometer for size and morphology. The average particle size of copper oxide nanoparticle was found to be 17.26nm by XRD shrerrer equation, average grain diameter by SEM was calculated 8.5×10-2mm with spherical and oval shaped. UV spectroscopy range was between 200-400nm. These copper oxide nanoparticles were applied as azo dyes (Congo red and malachite green) degradation. Effect of reaction parameters were studied for optimum conditions. Kinetic models like Langmuir, Freundlich and elovich models were applied. Finally, concluded that these particles are effective degradation potential of azo dyes at about 70-75% from aqueous solution.

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Section: Research Article Backgroundmentioning

confidence: 88%

Kinetic Isotherm Studies of Azo Dyes by Metallic Oxide Nanoparticles Adsorbent

Batool¹

2018

AOICS

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“…It has been reported as one of the highly poisonous anionic dye, which shows some chromosomal damage and clastogenic activity (12,13). Its toxic, carcinogenic and teratogenic effects to the living organisms has been attributed to the azo group in its chemical structure (14)(15)(16). Not only OG, but the intermediates formed during its degradation are also toxic too (17).…”

Section: Toxicity Of Ogmentioning

confidence: 99%

“…Higher percentage removal was recorded at pH 2, and the adsorption process was exothermic. Nassar, Mohamed (16) reported the use of α-Fe2O3, CoFe2O4 and Co3O4 as adsorbents for the removal of OG. Due to electrostatic attraction at low pH, maximum adsorption using α-Fe2O3, CoFe2O4 and Co3O4 was recorded at pH 3, 2 and 2.…”

Section: Metal Oxidesmentioning

confidence: 99%

Removal of Orange G Dye from Aqueous Solution by Adsorption: A Short Review

Imam

Muhammad

Babamale

et al. 2020

J. Environ. Treat. Tech.

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Adsorption is a widely used technique for wastewater remediation. The process is effective and economical for the removal of various pollutants from wastewater, including dyes. Moreover, Besides commercial activated carbon, different low-cost materials such as agricultural and industrial wastes are now used as adsorbents. The present review focused on the removal of a teratogenic and carcinogenic dye, orange G (OG) via adsorption using several adsorbents, together with the experimental conditions and their adsorption capacities. Based on the information compiled, various adsorbents have shown promising potential for OG removal.

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“…Fifty millilitres of 10 mM aqueous solution of copper sulphate (99.99 % purity, Aldrich) Was added to 25-mL A. Vera extract in a 100-mL Erlenmeyer flask with constant stirring on a stirrer at 100-120°C [18][19][20]. Color change of the reaction mixture was observed fromdeep blue to green and then dark greenish on stirring for 24 h.Then the resultant solution is centrifuged at 10,000 rpm for 10min, at room temperature (using Beckman centrifuge with a Beckman JA-17 rotor), and the mixture is collected after discarding the supernatant [21].…”

Section: Green Synthesis Of Cuo Npsmentioning

confidence: 99%

Studies on Adsorption of Congo red (Acid Red 28) Azodye by Nano Copperoxide

2018

ANN

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In this study, stable copper nanoparticles were synthesized by using Aloe barbadensis leaf extracts. The present study tracing of an object is a green synthesis of copper nanoparticles by the interaction of leaf extract and copper salt and its azo dye (congored) degradation efficiency. The characterization of copper oxide nanoparticles were performed by XRD, SEM, FTIR, UV spectroscopy. The XRD analysis showed that average particle size was between 5-30nm by scherrer equation. The shape of the copper nanoparticles was spherical and cubic. The EDX of synthesized nanoparticles confirmed copper content 68%. UV spectrophotometer analysis confirms peak of the copper nanoparticles between 200-400nm. The effect of variables like concentration, time, PH, adsorbent dosage also examined in this present study on % degradation of dye. It was noted that maximum dye removal occured at PH= 4, maximum concentration of adsorbent 1mg/l, maximum time for dye degradation 120 mint. The nanoparticles removed 70% of congored dye from solution at optimum condition of reaction parameters.The kinetics of pseudo second order is followed by adsorption process.The calculated sum of square .012 and r2 =.980 were analyzed. Langmuir isotherm model fit best and straight line graph drawned with r2 value .991 and probability 1.6E-5. This showed that copper oxide nanoparticles have efficient capacity of azo dye degradation.

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Hydrothermally Synthesized Co3O4, α-Fe2O3, and CoFe2O4 Nanostructures: Efficient Nano-adsorbents for the Removal of Orange G Textile Dye from Aqueous Media

Cited by 35 publications

References 51 publications

Kinetic Isotherm Studies of Azo Dyes by Metallic Oxide Nanoparticles Adsorbent

Kinetic Isotherm Studies of Azo Dyes by Metallic Oxide Nanoparticles Adsorbent

Removal of Orange G Dye from Aqueous Solution by Adsorption: A Short Review

Studies on Adsorption of Congo red (Acid Red 28) Azodye by Nano Copperoxide

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