Preparation and characterization of TiO2 sol–gel modified nanocomposite films

2010 ◽  
Vol 55 (3) ◽  
pp. 278-284 ◽  
Author(s):  
A. Eshaghi ◽  
M. Pakshir ◽  
R. Mozaffarinia
Keyword(s):  
Sol Gel ◽  
Nanocomposite Films ◽  
Tio2 Sol

Photocatalytic properties of TiO2 sol–gel modified nanocomposite films

2011 ◽  
Vol 37 (1) ◽  
pp. 327-331 ◽  
Author(s):  
Akbar Eshaghi ◽  
Reza Mozaffarinia ◽  
Mahmoud Pakshir ◽  
Ameneh Eshaghi
Keyword(s):  
Sol Gel ◽  
Photocatalytic Properties ◽  
Nanocomposite Films ◽  
Tio2 Sol

Electrical and Electrochromic Characterization of Poly(ethylene Oxide)/Molybdenum Doped Vanadium Pentoxide Films

2013 ◽  
Vol 785-786 ◽  
pp. 771-774
Author(s):  
Ai Ping Jin ◽  
Wen Chen ◽  
Quan Yao Zhu
Keyword(s):  
Ethylene Oxide ◽  
Vanadium Pentoxide ◽  
Hydrothermal Reaction ◽  
Sol Gel ◽  
Nanocomposite Films ◽  
Ex Situ ◽  
Transmission Spectra ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

The hybrid guest-host nanocomposite films based on poly (ethylene oxide) (PEO) and molybdenum doped vanadium pentoxide (V0.975Mo0.025)2O5nH2O were prepared by sol-gel and hydrothermal reaction via a two-part process. The electrical properties along and across V-O layers have been evaluated. The results indicate that the proper amount of PEO can increase the electrical conductivity of the films. The electrochromism of the films were investigated by cyclic voltammetry, the ex-situ transmission spectra and photographs. The films display a reversible multichromism (orangegreenbluebrown) upon Li+ion insertion/extraction.

(Photo)Electrochemical characterization of nanoporous TiO2 and Ce-doped TiO2 sol–gel film electrodes

2012 ◽  
Vol 83 ◽  
pp. 113-124 ◽  
Author(s):  
Sutasinee Kityakarn ◽  
Yingyot Pooarporn ◽  
Prayoon Songsiriritthigul ◽  
Attera Worayingyong ◽  
Simone Robl ◽  
...  
Keyword(s):  
Sol Gel ◽  
Electrochemical Characterization ◽  
Doped Tio2 ◽  
Tio2 Sol ◽  
Gel Film

Characterization of nanocrystalline cobalt doped TiO2 sol–gel material

2012 ◽  
Vol 352 (1) ◽  
pp. 224-228 ◽  
Author(s):  
Kirit Siddhapara ◽  
Dimple Shah
Keyword(s):  
Sol Gel ◽  
Doped Tio2 ◽  
Tio2 Sol

Preparation and Characterization of Organic-Inorganic Nanocomposite Films for Holographic Recording

2005 ◽  
Vol 277-279 ◽  
pp. 1039-1043 ◽  
Author(s):  
Ji Young Park ◽  
Eunkyoung Kim
Keyword(s):  
Visible Light ◽  
Diffraction Efficiency ◽  
Sol Gel ◽  
High Refractive Index ◽  
Nanocomposite Films ◽  
Holographic Recording ◽  
Hybrid Solutions ◽  
Sol Gel Process ◽  
High Diffraction

The photopolymerization of aromatic methacrylate in organic-inorganic nanocomposite films for holographic recording media was investigated. Thick photopolymer films (thickness>200 µm) were prepared using organic-inorganic hybrid solutions containing high refractive index monomers, through the sol-gel process. These photopolymer films were polymerized upon exposure to a visible light with high photo conversions. The photopolymerization was highly effective under visible light irradiation and could be applied to a holographic medium with high diffraction efficiency (>95 %) by using a 532nm laser. The diffraction efficiency of the film was much affected by morphology, which might affect monomer diffusion during the recording.

FTIR and UV-Vis (diffuse reflectance) spectroscopic characterization of TiO2 sol-gel

1992 ◽  
Vol 32 (2) ◽  
pp. 141-152 ◽  
Author(s):  
T. Lopez ◽  
E. Sanchez ◽  
P. Bosch ◽  
Y. Meas ◽  
R. Gomez
Keyword(s):  
Diffuse Reflectance ◽  
Sol Gel ◽  
Spectroscopic Characterization ◽  
Tio2 Sol

Synthesis and characterization of Cu-phthalocyanine hybrid TiO2 sol

2009 ◽  
Vol 13 (07) ◽  
pp. 779-786 ◽  
Author(s):  
Byeong Uk Jang ◽  
Jae Hong Choi ◽  
Sung Jun Lee ◽  
Se Geun Lee
Keyword(s):  
Particle Size ◽  
Irradiation Time ◽  
Sol Gel ◽  
Average Particle Size ◽  
Hybrid Nanoparticles ◽  
Average Particle ◽  
Oxygen Generation ◽  
Singlet Oxygen Generation ◽  
Tio2 Sol

TiO2 sol was prepared by a sol-gel method. Sodium polymethacrylate (PMAA) was added to TiO2 sol, resulting in a stable TiO2-PMAA . The copper(II) phthalocyanine tetrasulfonate ( CuPcTs ) was used to sensitize nanocrystalline TiO2 photocatalyst. The hybrid nanoparticles had an average particle size of 35 nm and core-shell type morphology was observed using a TEM. For the preparation of TiO2-CuPcTs , TiO2 was directly complexed with CuPcTs , leading to a particle size of 100 nm by a sonication treatment. The photodegradation of the hybrid type photosensitizer was measured using AO7 as an indicator with He-Ne laser with wavelength 633 nm. The efficiency of singlet oxygen generation was also measured by the reduction ratio of concentration of trans-1-(2′-methoxyvinyl) pyrene (MVP) responding to the change of fluorescene emission at 420 nm, depending on the irradiation time.

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