Degradation of Methylene Blue with Layered Ni-Fe/WO3 Nanostructured, Composite Films Electrodeposited Onto Graphite

TiO2-ZrO2composite film with the grain size of 50 nm was synthesized by electric field and heat (EF&H) treatments. Portions of O atoms in the TiO2network structure were replaced by N atoms as revealed by X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) analyses, suggesting formation of a nonstoichiometric compoundTiO2-xNxon the composite film. The UV-Vis spectra of the film suggested that the visible light with wavelength of 550 nm could be absorbed for the N-doped composite film after EF&H treatment in comparison to a cutoff wavelength of 400 nm for the composite film without EF treatment. Photocatalytic experiments showed that the degradation rate of methylene blue by N-doped composite films increased significantly under visible light irradiation. The partial replacement of O by doped N played a very important role in narrowing the band gap and improving the visible light photocatalytic reactivity.

Download Full-text

Amorphous or nanostructured composite films with predefined properties

10.12681/eadd/28773 ◽

2012 ◽

Author(s):

Nikolaos Panagiotopoulos

Keyword(s):

Composite Films ◽

Nanostructured Composite

Download Full-text

CdS/TiO2 composite films for methylene blue photodecomposition under visible light irradiation and non-photocorrosion of cadmium sulfide

Chemical Papers ◽

10.2478/s11696-013-0514-6 ◽

2014 ◽

Vol 68 (9) ◽

Cited By ~ 6

Author(s):

María Hernández-Torres ◽

María Ojeda-Carrera ◽

Manuel Sánchez-Cantú ◽

Nicolás Silva-González ◽

Justo Gracia-Jiménez

Keyword(s):

Methylene Blue ◽

Visible Light ◽

Cadmium Sulfide ◽

Visible Light Irradiation ◽

Deposition Time ◽

Sol Gel ◽

Composite Films ◽

Light Irradiation ◽

Visible Range ◽

Sem Images

AbstractCadmium sulfide/titanium dioxide (CdS/TiO2) composite films were grown on glass by the chemical bath deposition (DBQ) and sol-gel/dip coating methods, respectively, in order to increase the photocatalytic activity of TiO2 in photodegradation processes. The influence of the CdS deposition time on the morphology, optical absorption, and phononic modes of the composites were examined. Scanning electron microscopy (SEM) images showed clearly the CdS deposit on the TiO2 surface. The absorbance spectra indicated that the absorption of composites depends on the CdS deposition time and the absorption edges are shifted to the visible range. Micro Raman spectra exhibited the phonons associated with the TiO2 anatase and the longitudinal optic (LO) phonon of CdS whose intensity increases with the CdS deposition time. Photodegradation of methylene blue (MB) under visible light irradiation was observed in all films and the results were compared with those obtained with TiO2 films. The decomposition is higher for the composite with the CdS deposition time of 15 min. This optimal deposition time allows maximal enhancement of the charge carriers transfer to TiO2 involved in the photocatalysis. No signal associated with cadmium was detected by the atomic absorption spectroscopy (AAS), which means that the CdS photocorrosion does not occur since trap centers such as OH-Cd-S and Cl−, which trap holes and inhibit the photocorrosion, are produced during the growth process.

Download Full-text

Production and properties of nanostructured composite films containing silica and d-metal oxides (Mn, Fe, Co, Ni)

Doklady Chemistry ◽

10.1134/s0012500812080046 ◽

2012 ◽

Vol 445 (2) ◽

pp. 155-158 ◽

Cited By ~ 5

Author(s):

V. V. Kozik ◽

A. S. Brichkov ◽

V. Yu. Brichkova ◽

V. K. Ivanov ◽

O. P. Tolbanov ◽

...

Keyword(s):

Metal Oxides ◽

Composite Films ◽

Nanostructured Composite

Download Full-text

Preparation and characterization of nanostructured composite films for organic light emitting diodes

Journal of Physics Conference Series ◽

10.1088/1742-6596/187/1/012029 ◽

2009 ◽

Vol 187 ◽

pp. 012029 ◽

Cited By ~ 6

Author(s):

Nguyen Nang Dinh ◽

Le Ha Chi ◽

Nguyen Thang Long ◽

Tran Thi Chung Thuy ◽

Tran Quang Trung ◽

...

Keyword(s):

Light Emitting Diodes ◽

Composite Films ◽

Organic Light Emitting Diodes ◽

Light Emitting ◽

Nanostructured Composite ◽

Organic Light

Download Full-text

Polymeric nanostructured composite films

Pure and Applied Chemistry ◽

10.1351/pac200072010147 ◽

2000 ◽

Vol 72 (1-2) ◽

pp. 147-155 ◽

Cited By ~ 4

Author(s):

Jiacong Shen ◽

Junqi Sun ◽

Xi Zhang

Keyword(s):

Hydrogen Bonding ◽

High Efficiency ◽

Composite Films ◽

Device Fabrication ◽

Interface Quality ◽

Film Research ◽

Layered Architecture ◽

Nanostructured Composite ◽

Depth Study ◽

The Relationship

This research news describes the construction of polymeric nanostructured composite film based on a variety of interactions, such as hydrophobic–hydrophilic effect, electrostatic interaction, hydrogen bonding, etc. The work focused on developing strategies to solve the basic problems in the area of ultrathin film research, such as stability, improving the interface quality, creating patterned interface, and techniques to construct nanolayered structure. With in-depth study of the relationship between the microscopic layered architecture and macroscopic function of supramolecular assemblies, it is anticipated that one could obtain miniature devices or machines of high efficiency through integration of the assembling process and device fabrication.

Download Full-text