Activated carbon supported MnO2 for catalytic degradation of reactive black 5

Saroyan, Hayarpi; Arampatzidou, Anastasia C.; Voutsa, Dimitra; Lazaridis, Nikolaos K.; Deliyanni, Eleni A.

doi:10.1016/j.colsurfa.2019.01.025

Cited by 31 publications

(11 citation statements)

References 39 publications

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“…Out of various metal nanoparticle supports reported like MnO 2, alumina, graphene oxide and cerium oxide, silica MCM‐41 as support pertaining its high surface area (∼1000 m 2 /g)ek; and pore diameter . Being a porous material, it is capable of providing more active sites to the reactant and permitting both internal and external catalysis .…”

Section: Introductionmentioning

confidence: 99%

Ketone Hydrogenation by Using ZnO−Cu(OH)Cl/MCM‐41 with a Splash of Water: An Environmentally Benign Approach

Choudhary

Ghosh

Mobin

2020

Chemistry An Asian Journal

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MCM-41-supported ZnOÀ Cu(OH)Cl nanoparticles were synthesized via an incipient wetness impregnation technique using zinc chloride and copper chloride salts as well as water at room temperature. The catalyst was characterized by powder X-ray diffraction (PXRD), infrared spectroscopy (IR), and TGA, whereas surface and morphological studies were performed by using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The above studies revealed the incorporation of metal species into the pores of MCM-41, leading to a decrease in surface area of the nanoparticles that was found to be 239.079 m 2 /g. The substituents attached to the ketone determine the rate of the reaction, and the utilization of the green solvent 'water' astonishingly completes the hydrogenation reaction in 45 minutes at 40°C with 100% conversion and 100% selectivity as analyzed by gas chromatography-mass spectrometry. Hence, ZnOÀ Cu(OH)Cl/MCM-41 nanoparticles with 2.46 wt% zinc and 6.39 wt% copper were demonstrated as an active catalyst for the reduction of ketones without using any gaseous hydrogen source making it highly efficient as well as environmentally and economically benign.

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Section: Introductionmentioning

confidence: 99%

Ketone Hydrogenation by Using ZnO−Cu(OH)Cl/MCM‐41 with a Splash of Water: An Environmentally Benign Approach

Choudhary

Ghosh

Mobin

2020

Chemistry An Asian Journal

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“…The chemical structures of RGM12Mn are first investigated by FTIR, as shown in figure 6(b). The band at 550 cm −1 of the Mn-O stretching vibration can be recognized for RGM12Mn, indicating that MnO 2 has been successfully deposited on the RGM12 fiber [51]. Furthermore, the Raman spectra and XRD patterns confirm that MnO 2 successfully grow on the RGM12 fiber (figure S14).…”

Section: Resultsmentioning

confidence: 79%

Boosting storage properties of reduced graphene oxide fiber modified with MOFs-derived porous carbon through a wet-spinning fiber strategy

Yao

Ji²,

Chen³

et al. 2020

Nanotechnology

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Supercapacitors that are light weight and flexible, while occupying a low volume and demonstrating good mechanical properties are in demand for portable energy storage devices. Graphene composite fibers are supposed to be ideal electrodes for flexible fiber-shaped supercapacitors. Integration of MOFs-derived porous carbon into graphene fibers provides desirable electrochemical and mechanical properties. Herein, a general strategy is shown for the preparation of MOFs-derived porous carbon/reduced graphene oxide fibers. Close-packed and aligned graphene sheets along with porous MOFs-derived porous carbon can achieve outstanding mechanical properties through synergistic effects. Consequently, a large specific capacitance of 56.05 F cm−3, a good tensile property of 86.5 MPa and a high retention of 96.6% after 10 000 cycles can be achieved with the composite fibers. Moreover, a further deposition of polyaniline (PANI) and manganese dioxide (MnO2) by in situ growth on the fabricated composite fibers provide an improvement in specific capacitance with value of 74.21 F cm−3 and 65.08 F cm−3, respectively. The above results demonstrate the promising application of composite fibers as a flexible and stable electrode and substrate for energy storage devices.

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“…That means that the sorbent materials have small external surfaces and that their uptake is controlled by micropores rather than by the internal surface area. 45,46 It is worth mentioning that neither PET nor PS present any remarkable porosity.…”

Section: Materials Characterizationmentioning

confidence: 99%

Separation of PET and PS from PET/PS/PP plastic mixture and their use in synthesis of composite floating sorbent materials for dyes removal

Tsave

Bikiaris

Lazaridis

2021

J of Chemical Tech & Biotech

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BACKGROUND:The large production of polymeric materials worldwide and the difficulty of their decomposition make recycling necessary for both economic and environmental reasons. In this study, the separation of polyethylene terephthalate (PET) and polystyrene (PS) from ternary mixtures (polyethylene terephthalate/polystyrene/polypropylene, PET/PS/PP) and their subsequent utilization as sorbent materials was carried out. The carbonaceous sorbent materials based on polymeric matrices that were synthesized and characterized have low densities, resulting in ease of removal by flotation.RESULTS: Wetting agents polyvinyl alcohol (PVA) and dodecylamine (DA) were used to selectively wet PET and PS, respectively, and the effect of the wetting agents' concentration and pH on the effectiveness of the separation were studied. The recovered polymers were then utilized to prepare carbon composite materials that were used to remove of a test dye, Reactive Black dye, from aqueous solutions. CONCLUSION: The results show effective dye removal (nearly 98%) for both composite materials. The sorbents may then be regenerated for further wastewater treatment.

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Activated carbon supported MnO2 for catalytic degradation of reactive black 5

Cited by 31 publications

References 39 publications

Ketone Hydrogenation by Using ZnO−Cu(OH)Cl/MCM‐41 with a Splash of Water: An Environmentally Benign Approach

Ketone Hydrogenation by Using ZnO−Cu(OH)Cl/MCM‐41 with a Splash of Water: An Environmentally Benign Approach

Boosting storage properties of reduced graphene oxide fiber modified with MOFs-derived porous carbon through a wet-spinning fiber strategy

Separation of PET and PS from PET/PS/PP plastic mixture and their use in synthesis of composite floating sorbent materials for dyes removal

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