ZnO-based ternary nanocomposite for decolorization of methylene blue by photocatalytic dynamic membrane

Abstract The pure titania (TiO2) and the heterogeneous ternary magnetic nanocomposite of copper ferrite/ferrite oxide (CuFe2O4/Fe2O3) deposited by titanium dioxide (TiO2) were fabricated using a facile one-pot hydrothermal synthesis for the photocatalytic decomposition of methylene blue (MB) dye, under visible light. The nanocomposite was encoded as TCF in this work, where T stands for TiO2, C for CuFe2O4 and F for Fe2O3. Various techniques such as powder X-ray diffraction (PXRD), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy, diffuse reflectance spectroscopy, nitrogen physisorption, and vibrational sample magnetometry (VSM) were used to characterize the prepared samples. The PXRD data showed that the samples had pure anatase structure and the average crystal size of anatase TiO2 in the pure titania and ternary nanocomposite were calculated 147 Å and 135 Å, respectively. The nitrogen physisorption analysis data showed that the pore diameter was increased from 10.6 nm in pure titania to 16.0 nm in TCF. The pore volume was also increased from 0.316 in titania to 0.383 cm3/g in TCF sample. It also increased the typical magnitude of the mesopores’ diameter and volume per weight but it reduced the specific surface area of the samples. The VSM analysis of the ternary nanocomposite showed a considerable magnetic property of the sample (1.99 emu/g), qualifying it as a paramagnetic material. The photocatalytic decomposition efficiency of MB reached 77% and 68% in the presence of pure titania and TCF ternary nanocomposite, after 240-min exposure by the visible light. Active species trapping experiments showed that the major active species responsible for the photodecomposition of MB in the presence of TCF are $${\text{O}}_{2}^{ \cdot - }$$O2·- radicals and holes (h+).

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Electrochemical properties, optical modeling and electrocatalytic activity of pulse-electropolymerized ternary nanocomposite of poly (methylene blue) in aqueous solution

Journal of Molecular Liquids ◽

10.1016/j.molliq.2015.12.023 ◽

2016 ◽

Vol 215 ◽

pp. 24-30 ◽

Cited By ~ 12

Author(s):

Narges Ajami ◽

Ali Ehsani ◽

Ferydon Babaei ◽

Reza Safari

Keyword(s):

Aqueous Solution ◽

Methylene Blue ◽

Electrochemical Properties ◽

Electrocatalytic Activity ◽

Optical Modeling ◽

Ternary Nanocomposite

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Visible light enhanced photocatalytic degradation of methylene blue by ternary nanocomposite, MoO3/Fe2O3/rGO

Journal of Asian Ceramic Societies ◽

10.1080/21870764.2018.1479011 ◽

2018 ◽

Vol 6 (3) ◽

pp. 183-195 ◽

Cited By ~ 30

Author(s):

R. Balaji Anjaneyulu ◽

B. Sathish Mohan ◽

G. Parasuram Naidu ◽

R. Muralikrishna

Keyword(s):

Methylene Blue ◽

Visible Light ◽

Photocatalytic Degradation ◽

Ternary Nanocomposite

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Visible active TiO2-CdS-rGO ternary nanocomposite for enhanced photodecomposition of methylene blue

Materials Today Proceedings ◽

10.1016/j.matpr.2020.05.272 ◽

2020 ◽

Vol 29 ◽

pp. 1125-1128

Author(s):

A. Raja ◽

P. Rajasekaran ◽

K. Selvakumar ◽

R. Ganapathi Raman ◽

M. Swaminathan

Keyword(s):

Methylene Blue ◽

Ternary Nanocomposite

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A SEM and Light Microscope Study of the Epidermal Leaf Structures of the Carnivorous Plant, Sarracenia purpurea, L.

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100065833 ◽

1971 ◽

Vol 29 ◽

pp. 358-359

Author(s):

B. J. Panessa ◽

J. F. Gennaro

Keyword(s):

Methylene Blue ◽

Toluidine Blue ◽

Outer Surface ◽

Microscope Study ◽

Light Microscope ◽

Carnivorous Plant ◽

Sarracenia Purpurea ◽

Inner Surface

Tissue from the hood and sarcophagus regions were fixed in 6% glutaraldehyde in 1 M.cacodylate buffer and washed in buffer. Tissue for SEM was partially dried, attached to aluminium targets with silver conducting paint, carbon-gold coated(100-500Å), and examined in a Kent Cambridge Stereoscan S4. Tissue for the light microscope was post fixed in 1% aqueous OsO4, dehydrated in acetone (4°C), embedded in Epon 812 and sectioned at ½u on a Sorvall MT 2 ultramicrotome. Cross and longitudinal sections were cut and stained with PAS, 0.5% toluidine blue and 1% azure II-methylene blue. Measurements were made from both SEM and Light micrographs.The tissue had two structurally distinct surfaces, an outer surface with small (225-500 µ) pubescent hairs (12/mm2), numerous stoma (77/mm2), and nectar glands(8/mm2); and an inner surface with large (784-1000 µ)stiff hairs(4/mm2), fewer stoma (46/mm2) and larger, more complex glands(16/mm2), presumably of a digestive nature.

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