Bactericide effects of transparent polyethylene photocatalytic films coated by oxides under visible light

2017 ◽  
Vol 213 ◽  
pp. 62-73 ◽  
Author(s):  
Sami Rtimi ◽  
John Kiwi
Keyword(s):  
Visible Light ◽  
Photocatalytic Films

Cuprous Oxide Films Deposition by Mid-Frequency Magnetron Sputtering and Their Photocatalytic Activity under Visible Light

NANO ◽  
2021 ◽  
Author(s):  
Z. X. Mu ◽  
H. Li ◽  
X. N. Deng
Keyword(s):  
Photocatalytic Activity ◽  
Magnetron Sputtering ◽  
Visible Light ◽  
Cuprous Oxide ◽  
Deposition Time ◽  
Visible Region ◽  
Mixed Phase ◽  
Photocatalytic Properties ◽  
Oxygen Flow ◽  
Photocatalytic Films

Cuprous oxide (Cu2O) has attracted much attention as a photocatalytic material. In this paper, the mid-frequency reactive magnetron sputtering method was used to prepare Cu2O films on glass slides, and the effects of oxygen flow and deposition time on the structures, morphologies and photocatalytic properties of the films were studied. The results show that the films prepared by this method have smooth surfaces and good absorptivity in the visible region. As the oxygen flow increases, the films transit from the mixed-phase of Cu and Cu2O to the single-phase of Cu2O. When the oxygen flow continues to increase, the films change to a mixed-phase of Cu4O3 and Cu2O. The photocatalytic decolorization of methyl orange under visible light irradiation conditions was used to assess the photocatalytic properties of the prepared films. When the oxygen flow is 6[Formula: see text]sccm and the deposition time is 15[Formula: see text]min, the film exhibits the best photocatalytic activity. Finally, the Mulliken electronegativity theory was used to explain the photocatalytic mechanism of Cu2O. This study confirmed the feasibility of preparing Cu2O photocatalytic films by magnetron sputtering, and provided the experimental basis for the subsequent study of Cu2O photocatalytic films.

Synthesize of SrxLa1-xTiO3 Visible Light Responces Photocatalyst Films for the Water-Splitting Reaction by Pulsed Laser Deposition

2013 ◽  
Vol 481 ◽  
pp. 125-128
Author(s):  
Satoshi Kurumi ◽  
Masateru Saito ◽  
Takayuki Kurihara ◽  
Kaoru Suzuki
Keyword(s):  
Visible Light ◽  
Pulsed Laser Deposition ◽  
Water Splitting ◽  
Pulsed Laser ◽  
White Paper ◽  
Laser Deposition ◽  
Bandgap Energy ◽  
Gas Generation ◽  
Light Responses ◽  
Photocatalytic Films

This In this study, we report on the growth techniques of SrxLa1-xTiO3 visible-light responses photocatalytic films by pulsed laser deposition for the H2 gas generation system as the fuel cell devices. XRD profile showed SrTiO3 peaks were obtained at the all films. Bandgap energy of films were decreaed with increasing the La ratio from 3.2 eV to 2.9 eV. Water splitting reaction were observed at the all films, and the maximum value of the gas generation was 7.3 μmol/cm2h at x = 0.7 film.document explains and demonstrates how to prepare your camera-ready manuscript for Trans Tech Publications. The best is to read these instructions and follow the outline of this text. The text area for your manuscript must be 17 cm wide and 25 cm high (6.7 and 9.8 inches, resp.). Do not place any text outside this area. Use good quality, white paper of approximately 21 x 29 cm or 8 x 11 inches (please do not change the document setting from A4 to letter). Your manuscript will be reduced by approximately 20% by the publisher. Please keep this in mind when designing your figures and tables etc.

A New Preparation Method of Visible Light Responsive Titanium Dioxide Photocatalytic Films by Sol-Gel Method

2009 ◽  
Vol 620-622 ◽  
pp. 675-678 ◽  
Author(s):  
Kaori Nishizawa ◽  
Takeshi Miki ◽  
Eiji Watanabe ◽  
Hiroshi Taoda
Keyword(s):  
Methylene Blue ◽  
Titanium Dioxide ◽  
Visible Light ◽  
Preparation Method ◽  
Sol Gel ◽  
Fused Silica ◽  
Visible Light Absorption ◽  
Titanium Tetra Isopropoxide ◽  
Titanium Dioxides ◽  
Photocatalytic Films

Two types of titanium dioxide sol solutions were prepared using titanium tetra-isopropoxide, urea, 2-methoxyethanol and water. The prepared sol solutions were dip-coated onto fused silica plates. These as-prepared films were dried at 100 °C and then annealed at 650 °C. The annealed films were anatase type titanium dioxides. Visible light absorption by the films was observed in wavelengths longer than 400 nm. Also, photodegradation of methylene blue by visible light irradiation was accelerated in the presence of the films prepared by these methods.

A New Preparation Method of Visible Light Responsive Titanium Dioxide Photocatalytic Films by Ultraviolet Irradiation

2010 ◽  
Vol 658 ◽  
pp. 487-490 ◽  
Author(s):  
Kaori Nishizawa ◽  
Eiji Watanabe ◽  
Masaki Maeda
Keyword(s):  
Methylene Blue ◽  
Titanium Dioxide ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Preparation Method ◽  
Fused Silica ◽  
Visible Light Absorption ◽  
Titanium Tetra Isopropoxide ◽  
Titanium Dioxides ◽  
Photocatalytic Films

Titanium dioxide sol solution was prepared using titanium tetra-isopropoxide, urea, 2-methoxyethanol. After that, ultraviolet light was irradiated to the sol solution, then, H2O was added to the solution. The prepared sol solution was dip-coated onto fused silica plates. The as-prepared films were dried at 100 °C and then annealed at 650 °C. The annealed films were anatase type titanium dioxides. Visible light absorption by the films was observed in wavelengths longer than 380 nm. Also, photodegradation of methylene blue by visible light irradiation was accelerated in the presence of the films prepared by these methods.

scholarly journals Self‐Cleaning Membranes: Visible‐Light‐Activated Photocatalytic Films toward Self‐Cleaning Membranes (Adv. Funct. Mater. 34/2020)

2020 ◽  
Vol 30 (34) ◽  
pp. 2070230
Author(s):  
Huiru Zhang ◽  
Anil U. Mane ◽  
Xiaobin Yang ◽  
Zijing Xia ◽  
Edward F. Barry ◽  
...  
Keyword(s):  
Visible Light ◽  
Self Cleaning ◽  
Photocatalytic Films

BiOBr visible-light photocatalytic films in a rotating disk reactor for the degradation of organics

2015 ◽  
Vol 3 (28) ◽  
pp. 14801-14808 ◽  
Author(s):  
Yuning Huo ◽  
Rujing Hou ◽  
Xiaofang Chen ◽  
Haibo Yin ◽  
Yuan Gao ◽  
...  
Keyword(s):  
Visible Light ◽  
Rotating Disk ◽  
Rotating Disk Reactor ◽  
Photocatalytic Films ◽  
Visible Light Photocatalytic

BiOBr visible-light photocatalytic films utilized in a rotating disk reactor have achieved improved photoactivity for the degradation of color organics.

scholarly journals J0450106 Fabrication and improvement of TiO_2 photocatalytic films with visible light activity by reduction treatment

2014 ◽  
Vol 2014 (0) ◽  
pp. _J0450106--_J0450106-
Author(s):  
Kohei MIYAZAWA ◽  
Yun LU ◽  
Hiromasa Sato ◽  
Shunsuke TAKAYA ◽  
Hiroshi ASANUMA ◽  
...  
Keyword(s):  
Visible Light ◽  
Reduction Treatment ◽  
Light Activity ◽  
Photocatalytic Films

scholarly journals Visible‐Light‐Activated Photocatalytic Films toward Self‐Cleaning Membranes

2020 ◽  
Vol 30 (34) ◽  
pp. 2002847 ◽  
Author(s):  
Huiru Zhang ◽  
Anil U. Mane ◽  
Xiaobin Yang ◽  
Zijing Xia ◽  
Edward F. Barry ◽  
...  
Keyword(s):  
Visible Light ◽  
Self Cleaning ◽  
Photocatalytic Films

Studies of metaphase chromosomes in the scanning transmission x-ray microscope: Image fidelity, radiation damage and specimen preparation

1992 ◽  
Vol 50 (2) ◽  
pp. 1038-1039
Author(s):  
Shawn Williams ◽  
Xiaodong Zhang ◽  
Susan Lamm ◽  
Jack Van’t Hof
Keyword(s):  
Visible Light ◽  
Radiation Damage ◽  
Cross Section ◽  
Imaging Techniques ◽  
Dose Range ◽  
Specimen Preparation ◽  
X Rays ◽  
Metaphase Chromosomes ◽  
X Ray ◽  
Scanning Transmission

The Scanning Transmission X-ray Microscope (STXM) is well suited for investigating metaphase chromosome structure. The absorption cross-section of soft x-rays having energies between the carbon and oxygen K edges (284 - 531 eV) is 6 - 9.5 times greater for organic specimens than for water, which permits one to examine unstained, wet biological specimens with resolution superior to that attainable using visible light. The attenuation length of the x-rays is suitable for imaging micron thick specimens without sectioning. This large difference in cross-section yields good specimen contrast, so that fewer soft x-rays than electrons are required to image wet biological specimens at a given resolution. But most imaging techniques delivering better resolution than visible light produce radiation damage. Soft x-rays are known to be very effective in damaging biological specimens. The STXM is constructed to minimize specimen dose, but it is important to measure the actual damage induced as a function of dose in order to determine the dose range within which radiation damage does not compromise image quality.

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