Preparation of Nitrogen-Substituted TiO2Thin Film Photocatalysts by the Radio Frequency Magnetron Sputtering Deposition Method and Their Photocatalytic Reactivity under Visible Light Irradiation†

2006 ◽  
Vol 110 (50) ◽  
pp. 25266-25272 ◽  
Author(s):  
Masaaki Kitano ◽  
Keisho Funatsu ◽  
Masaya Matsuoka ◽  
Michio Ueshima ◽  
Masakazu Anpo
Keyword(s):  
Magnetron Sputtering ◽  
Visible Light ◽  
Radio Frequency ◽  
Visible Light Irradiation ◽  
Radio Frequency Magnetron ◽  
Light Irradiation ◽  
Deposition Method ◽  
Radio Frequency Magnetron Sputtering ◽  
Sputtering Deposition ◽  
Magnetron Sputtering Deposition Method

The Preparation of Visible Light-Responsive TiO2 Thin Films by Applying a RF-Magnetron Sputtering Deposition Method and Their Photocatalytic Reactivity for the Decomposition of Water with a Separate Evolution of H2 and O2

2006 ◽  
Vol 317-318 ◽  
pp. 823-826 ◽  
Author(s):  
Masaaki Kitano ◽  
Hisashi Kikuchi ◽  
Takahiro Hosoda ◽  
Masato Takeuchi ◽  
Masaya Matsuoka ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Magnetron Sputtering ◽  
Visible Light ◽  
Tio2 Thin Film ◽  
Rf Magnetron Sputtering ◽  
Light Irradiation ◽  
Deposition Method ◽  
Sputtering Deposition ◽  
Magnetron Sputtering Deposition Method

TiO2 (Vis-TiO2) thin films absorbing UV and visible light in regions of 250-600nm have been successfully developed by applying a radio-frequency (RF) magnetron sputtering deposition method. SIMS depth profiles of Vis-TiO2 revealed that the O/Ti ratio gradually decreases from the top surface (O/Ti ratio : 2.00 ± 0.01) to the inside (1.93 ± 0.01). This unique declined O/Ti composition (anisotropic structure) may be the origin of the significant perturbation in the electronic structure of Vis-TiO2, enabling the absorption of visible light and their high photocatalytic performance under visible light irradiation. In fact, it was found that the separate evolution of H2 and O2 from water could be successfully achieved under visible light or solar light irradiation by applying these thin film photocatalysts in an H-type glass container separating the two aqueous solutions by a TiO2 thin film and proton-exchange membrane, having H2 evolution from Pt side and O2 evolution from TiO2 thin film side, respectively.

Wafer-Scale Growth of ITO Nanorods by Radio Frequency Magnetron Sputtering Deposition

2011 ◽  
Vol 158 (5) ◽  
pp. K131 ◽  
Author(s):  
Jae Hyoung Park ◽  
Hoo Keun Park ◽  
Jinhoo Jeong ◽  
Woong Kim ◽  
Byoung Koun Min ◽  
...  
Keyword(s):  
Magnetron Sputtering ◽  
Radio Frequency ◽  
Radio Frequency Magnetron ◽  
Radio Frequency Magnetron Sputtering ◽  
Scale Growth ◽  
Sputtering Deposition ◽  
Wafer Scale

scholarly journals Functionalization of eggshell membranes with CuO–ZnO based p–n junctions for visible light induced antibacterial activity against Escherichia coli

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Nicoleta Preda ◽  
Andreea Costas ◽  
Mihaela Beregoi ◽  
Nicoleta Apostol ◽  
Andrei Kuncser ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Activity ◽  
Magnetron Sputtering ◽  
Visible Light ◽  
Radio Frequency ◽  
Metal Oxides ◽  
Inorganic Compounds ◽  
Radio Frequency Magnetron ◽  
Eggshell Membrane ◽  
Radio Frequency Magnetron Sputtering

AbstractBiopolymers provide versatile platforms for designing naturally-derived wound care dressings through eco-friendly pathways. Eggshell membrane (ESM), a widely available, biocompatible biopolymer based structure features a unique 3D porous interwoven fibrous protein network. The ESM was functionalized with inorganic compounds (Ag, ZnO, CuO used either separately or combined) using a straightforward deposition technique namely radio frequency magnetron sputtering. The functionalized ESMs were characterized from morphological, structural, compositional, surface chemistry, optical, cytotoxicity and antibacterial point of view. It was emphasized that functionalization with a combination of metal oxides and exposure to visible light results in a highly efficient antibacterial activity against Escherichia coli when compared to the activity of individual metal oxide components. It is assumed that this is possible due to the fact that an axial p–n junction is created by joining the two metal oxides. This structure separates into components the charge carrier pairs promoted by visible light irradiation that further can influence the generation of reactive oxygen species which ultimately are responsible for the bactericide effect. This study proves that, by employing inexpensive and environmentally friendly materials (ESM and metal oxides) and fabrication techniques (radio frequency magnetron sputtering), affordable antibacterial materials can be developed for potential applications in chronic wound healing device area.

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