Oxidative degradation of RB19 dye by a novel γ-MnO2/MWCNT nanocomposite catalyst with H2O2

Fathy, Nady A.; El-Shafey, Shaymaa E.; El-Shafey, Ola I.; Mohamed, Wael S.

doi:10.1016/j.jece.2013.07.028

Cited by 65 publications

(14 citation statements)

References 29 publications

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“…Various strategies for synthesis of different phases of MnO 2 and its composites have been reported . The synthesis of such composite materials can be relatively tedious if large quantities are desired for industrial applications.…”

Section: Methodsmentioning

confidence: 99%

“…Various strategies for synthesis of different phases of MnO 2 and its composites have been reported. [16,18,[21][22][23] Thes ynthesis of such composite materials can be relativelyt edious if large quantities are desired for industrial applications.I nt his regard, we used commerciallya vailableM nO 2 microparticles, which are very cheap and can be obtained in bulk quantities. The shapea nd surface morphology of the particles were examined by using scanning electron microscopy (SEM) ( Figure 1).…”

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confidence: 99%

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Dual Effect of Manganese Oxide Micromotors: Catalytic Degradation and Adsorptive Bubble Separation of Organic Pollutants

Wani

Safdar

Kinnunen

et al. 2015

Chemistry A European J

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Manganese oxide (MnO2 ) based micromotors exhibiting a dual effect, that is, catalytic degradation and adsorptive bubble separation, were employed for water remediation. The dual effect of MnO2 microparticles led to a greater than 90 % of decolorization of non-biodegradable organic dyes in just 1 h, without the need for external agitation or bubble generation. These findings suggest high potential of MnO2 micromotors for decontamination of organic pollutants from wastewaters or natural water reserves.

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Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

Dual Effect of Manganese Oxide Micromotors: Catalytic Degradation and Adsorptive Bubble Separation of Organic Pollutants

Wani

Safdar

Kinnunen

et al. 2015

Chemistry A European J

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“…In this regard, catalytic oxidation of dyes has gained remarkable interest for treating huge amount of contaminated water with low energy consumption. Especially, catalytic wet peroxide oxidation is effective for removing various organic pollutants on large scale (168)(169)(170). A ternary hybrid of MnO2@CNTs-reduced graphene oxide was prepared which exhibited superior catalytic activity in comparison to MnO2@CNT in removing basic red 18 dye in presence of H2O2 within short time (171).…”

Section: Catalytic Conversion Of Pollutantsmentioning

confidence: 99%

A comprehensive review on the environmental applications of graphene–carbon nanotube hybrids: recent progress, challenges and prospects

John¹,

Nancy

Sharmila³

2021

Mater. Adv.

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“…Recently, advanced oxidation processes (AOPs) carried out using eco‐friendly hydrogen peroxide as an oxidant reagent which forms hydroxyl radicals with high strong oxidation potential ( E 0 = 2.80 V) in the presence of metal oxide catalysts such as CuO, MnO 2 , ZnO, and CeO 2 or zero‐valent metal (e.g., Ni) supported on carbon materials have received much interest in the recent years. Therefore, the AOPs are very efficient for the degradation of several organic contaminants coexisted in wastewater, in particular, which are difficult to break up by conventional methods.…”

Section: Introductionmentioning

confidence: 99%

Multi‐walled carbon nanotubes supported amorphous Fe₂O₃ and Ag₂O–Fe₂O₃ as Fenton catalysts for degradation of maxilon red dye

El-Khouly

Fathy

2018

Asia-Pacific J Chem Eng

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Two Fenton-like catalysts of iron oxide (Fe 2 O 3 ) or Fe 2 O 3 doped with silver oxide (Ag 2 O) and supported on acidified multi-walled carbon nanotubes (a-MWCNTs) were successfully prepared by wet impregnation and calcined at 200°C and noted as Fe 2 O 3 /MWCNTs and Ag 2 O-Fe 2 O 3 /MWCNTs, respectively. These samples were characterized using techniques such as TEM, FTIR, N 2 adsorption at -196°C, and XRD. Their catalytic performances were determined through Fenton oxidation process of maxilon red dye (MR) at 25°C. Fenton degradation results disclosed that the Ag 2 O-Fe 2 O 3 /MWCNTs nanocomposite has the superior and the faster catalytic degradation rate of dye. This result was due to the synergistic effect that established from the combination of tiny amount of Ag 2 O with Fe 2 O 3 over a-MWCNTs support, which prevents the agglomeration of catalyst nanoparticles and enhances the adsorption of dye molecules. A full degradation of dye was obtained within 10 min at 25°C and the Fenton oxidation capability of Fe 2 O 3 / MWCNTs catalyst increased by about 10% after loading~1wt.% of Ag 2 O. The catalytic performance was considerably based on pH of solution, H 2 O 2 concentration, and dye concentration. The reusability tests confirmed that Ag 2 O-Fe 2 O 3 / MWCNTs nanocomposite offers high stability over three consecutive cycles, where over 90% degradation of MR dye was obtained. Finally, Ag 2 O-Fe 2 O 3 / MWCNTs nanocomposite showed excellent Fenton catalytic oxidation and reusability as compared with Fe 2 O 3 /MWCNTs composite in Fenton-like processes.

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Oxidative degradation of RB19 dye by a novel γ-MnO2/MWCNT nanocomposite catalyst with H2O2

Cited by 65 publications

References 29 publications

Dual Effect of Manganese Oxide Micromotors: Catalytic Degradation and Adsorptive Bubble Separation of Organic Pollutants

Dual Effect of Manganese Oxide Micromotors: Catalytic Degradation and Adsorptive Bubble Separation of Organic Pollutants

A comprehensive review on the environmental applications of graphene–carbon nanotube hybrids: recent progress, challenges and prospects

Multi‐walled carbon nanotubes supported amorphous Fe₂O₃ and Ag₂O–Fe₂O₃ as Fenton catalysts for degradation of maxilon red dye

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Oxidative degradation of RB19 dye by a novel γ-MnO2/MWCNT nanocomposite catalyst with H2O2

Cited by 65 publications

References 29 publications

Dual Effect of Manganese Oxide Micromotors: Catalytic Degradation and Adsorptive Bubble Separation of Organic Pollutants

Dual Effect of Manganese Oxide Micromotors: Catalytic Degradation and Adsorptive Bubble Separation of Organic Pollutants

A comprehensive review on the environmental applications of graphene–carbon nanotube hybrids: recent progress, challenges and prospects

Multi‐walled carbon nanotubes supported amorphous Fe2O3 and Ag2O–Fe2O3 as Fenton catalysts for degradation of maxilon red dye

Contact Info

Product

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Multi‐walled carbon nanotubes supported amorphous Fe₂O₃ and Ag₂O–Fe₂O₃ as Fenton catalysts for degradation of maxilon red dye