Preparation, Characterization, and Photocatalytic Applications of MWCNTs/TiO<sub>2</sub>Composite

Kamil, Ahmed M.; Hussein, Falah H.; Halbus, Ahmed F.; Bahnemann, Detlef W.

doi:10.1155/2014/475713

Cited by 34 publications

(23 citation statements)

References 32 publications

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“…The pattern of the CNTs presented a high intense peak at 26.06° and a low intense peak at 42.94°, corresponding to the (002) and (100) reflections, respectively. Meanwhile, the fCNTs presented a high intense peak at 25.14° with a slight shift toward lower diffraction angles (higher interplanar spacings) which may be attributed to an increase in the sp2 C=C layers spacing [ 36 ]. A low intense peak was suppressed because of the presence of a minor phase due to the impurities in the samples during the preparation process.…”

Section: Resultsmentioning

confidence: 99%

Preparation and Characterization of Polymer Membranes Impregnated with Carbon Nanotubes for Olive Mill Wastewater

et al. 2022

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In this study, polymer membrane(s) impregnated with carbon nanotubes (CNTs) were developed, characterized and evaluated for removing phenolic compounds from olive mill wastewater; thus, protecting the environment and public health. Polyethersulfone/functionalized, multi-walled carbon nanotube (PES/fCNTs) membranes were synthesized via the phase inversion method using PES and acid-treated CNTs. The prepared membranes were then characterized by scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR) and contact angle. Results obtained from this study indicate a more hydrophilic surface for the prepared PES/fCNTs membranes, with a higher pure water flux compared to the polyethersulfone (PES) membranes. In addition, the amount of fCNTs in the membranes was found to be the most significant factor affecting the morphology and water flux of the membranes. The PES/fCNTs membranes at 1 bar with 0 wt.% and 1 wt.% of CNTs showed water flux of 37.8 and 69.71 kg/h.m2, respectively. In addition, PES/fCNTs membranes with 0.5 wt.% fCNTs showed the highest total phenol content removal of 74%.

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Section: Resultsmentioning

confidence: 99%

Preparation and Characterization of Polymer Membranes Impregnated with Carbon Nanotubes for Olive Mill Wastewater

et al. 2022

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“…[51,52] The Kubelka-Munk approach is applied in order to characterize the optical properties using the result from optical reflectance. The Kubelka-Munk equation is expressed as follows [53] :…”

Section: Resultsmentioning

confidence: 99%

Effect of sonication time on the synthesis of the CdS nanoparticle based multiwall carbon nanotube – maleic anhydride – 1-octene nanocomposites

Malikov

Altay

Akperov

et al. 2018

Fullerenes, Nanotubes and Carbon Nanostructures

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Effect of sonication time on the synthesis of the CdS nanoparticles within the matrix obtained through the covalent functionalization of multiwall carbon nanotube (MWCNT) with maleic anhydride (MA)-1-octene copolymer was investigated. Cadmium chloride and thiourea were used as the raw materials. MWCNTs used for the matrix were synthesized by Catalytic Chemical Vapor Deposition using Fe-Co/Al 2 O 3 as the catalyst. The obtained nanostructures were characterized by FTIR, XRD, Raman spectroscopy, TEM, SEM, TG and UV-Vis spectroscopy. Electrophysical properties of the polymer nanocomposites obtained using different periods of time for sonication were comparably investigated. The average CdS particle diameter was between 3.9-7.9 nm as confirmed independently by TEM and XRD. UV-Vis spectroscopy revealed that the obtained nanostructures are appropriate base materials for making optical devices.

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“…This behavior can be due to the increasing CNT weight ratio in the nanocomposites’ specific surface area of them for visible light adsorption increase and avoidance of TiO 2 (B) particle agglomeration. On the other hand, CNTs as adsorbent and conductive material can absorb the light irradiation and transfer the photogenerated electron into the conduction band of TiO 2 (B) efficiently in the photodegradation process. − As it can be seen in Figure , since there was little difference in the photodegradation result between 10% and 15%, and also taking into account the economic costs and cost-effectiveness, we decided that the 10% F-TiO 2 (B)/MWCNT and 10% F-TiO 2 (B)/SWCNT nanocomposites are efficient photocatalysts for MG dye degradation.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Hedgehoglike F-TiO₂(B)/CNT Nanocomposites for Sonophotocatalytic and Photocatalytic Degradation of Malachite Green (MG) under Visible Light: Kinetic Study

Panahian

Arsalani

2017

J. Phys. Chem. A

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The present study describes the preparation of hedgehoglike F-doped titanium dioxide bronze (F-TiO(B)) and its nanocomposites containing single-walled and multiwalled carbon nanotubes (SWCNTs, MWCNTs) by using combined ball milling-hydrothermal processes. Then, sonophotocatalytic and photocatalytic degradation of malachite green (MG) dye from aqueous solution using prepared materials was performed. The results show that F-TiO(B)/SWCNT displays a good sonophotocatalytic and photocatalytic performance among other products under visible light. In addition, they indicated that the efficiency of malachite green degradation is more than 95% and 91% for sonophotocatalytic and photocatalytic methods, respectively. Also, they demonstrate that the photocatalytic efficiency of catalysts increases in the presence of ultrasound and the sonophotocatalysis process followed a second-order kinetics. The catalysts have been characterized by transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), X-ray diffraction analysis (XRD), Fourier transform infrared spectroscopy (FTIR), UV-vis diffuse reflectance spectroscopy, and energy-dispersive X-ray spectroscopy (EDX). The analyzed data confirmed the presence of CNTs and fluorine (F) as dopant in all nanocomposites. The presented hybrid method reduced the band gap from 3.02 eV for F-TiO(B) to 2.7 eV for F-TiO(B)/SWCNT nanocomposite.

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Preparation, Characterization, and Photocatalytic Applications of MWCNTs/TiO₂Composite

Cited by 34 publications

References 32 publications

Preparation and Characterization of Polymer Membranes Impregnated with Carbon Nanotubes for Olive Mill Wastewater

Preparation and Characterization of Polymer Membranes Impregnated with Carbon Nanotubes for Olive Mill Wastewater

Effect of sonication time on the synthesis of the CdS nanoparticle based multiwall carbon nanotube – maleic anhydride – 1-octene nanocomposites

Synthesis of Hedgehoglike F-TiO₂(B)/CNT Nanocomposites for Sonophotocatalytic and Photocatalytic Degradation of Malachite Green (MG) under Visible Light: Kinetic Study

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Preparation, Characterization, and Photocatalytic Applications of MWCNTs/TiO2Composite

Cited by 34 publications

References 32 publications

Preparation and Characterization of Polymer Membranes Impregnated with Carbon Nanotubes for Olive Mill Wastewater

Preparation and Characterization of Polymer Membranes Impregnated with Carbon Nanotubes for Olive Mill Wastewater

Effect of sonication time on the synthesis of the CdS nanoparticle based multiwall carbon nanotube – maleic anhydride – 1-octene nanocomposites

Synthesis of Hedgehoglike F-TiO2(B)/CNT Nanocomposites for Sonophotocatalytic and Photocatalytic Degradation of Malachite Green (MG) under Visible Light: Kinetic Study

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Product

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Preparation, Characterization, and Photocatalytic Applications of MWCNTs/TiO₂Composite

Synthesis of Hedgehoglike F-TiO₂(B)/CNT Nanocomposites for Sonophotocatalytic and Photocatalytic Degradation of Malachite Green (MG) under Visible Light: Kinetic Study