Fabrication of Photocatalytic TiO2 Thin Film Using Innovative Aerosol Deposition Method

2006 ◽  
Vol 510-511 ◽  
pp. 1-4 ◽  
Author(s):  
Jong Oh Kim ◽  
Won Youl Choi ◽  
Byung Kyu Choi ◽  
Jong Tae Jeong

This research investigated the water purification performance of thin film with anatase phase TiO2 powder having good photocatalytic property using an innovative aerosol deposition method at the normal room temperature. Fresh raw powder was dehydrated for good dispersion of TiO2 powder. To suppress the formation of second particle, the powder was dispersed for 90 minutes in alcohol bath with ultrasonic treatment and then desiccated. The average grain size of particle was identified to be 1µm in TiO2 thin film deposited on stainless steel mesh by scanning electron microscopy (SEM). The anatase phase of TiO2 thin film was investigated by X-ray diffraction (XRD). The anatase phase of fresh raw powder was favorably maintained after aerosol deposition treatment.

2011 ◽  
Vol 485 ◽  
pp. 183-186 ◽  
Author(s):  
Tsutomu Furuta ◽  
Saki Hatta ◽  
Yoichi Kigoshi ◽  
Takuya Hoshina ◽  
Hiroaki Takeda ◽  
...  

Freestanding BaTiO3 ceramics films were fabricated using the aerosol deposition (AD) method and the size effect of nanograined BaTiO3 ceramics was demonstrated. Dense BaTiO3 thick film fabricated by the AD method was crystallized and detached from substrate by an annealing treatment at 600 °C, and then the grain size was controlled by a reannealing treatment at various temperatures. As a result, freestanding BaTiO3 thick films with various grain sizes from 24 to 170 nm were successfully obtained. Polarization–electric field (P–E) measurement revealed that BaTiO3 ceramics with grain sizes of more than 58 nm showed ferroelectricity, whereas BaTiO3 ceramics with an average grain size of 24 nm showed paraelectricity at room temperature. Dielectric measurement indicated that the permittivity decreased with decreasing grain size in the range of 170 to 24 nm.


2014 ◽  
Vol 253 ◽  
pp. 181-186 ◽  
Author(s):  
Ryoji Inada ◽  
Kenta Shibukawa ◽  
Chiaki Masada ◽  
Yuta Nakanishi ◽  
Yoji Sakurai

2008 ◽  
Vol 368-372 ◽  
pp. 126-128
Author(s):  
Ji Feng Ma ◽  
Yuan Hua Lin ◽  
Ce Wen Nan ◽  
Takaaki Tsurumi

CaCu3Ti4O12 (CCTO) ceramic thick films have been prepared on Copper substrate, using ceramic powders by an aerosol deposition method (ADM). The ceramic powders are prepared by traditional solid state reaction processing at 1100 oC for 5 h. X-ray diffraction and scanning electron microscopy are used to investigate the microstructure and the phase composition of the deposited films. The results indicate that thick films are pure CCTO phase and homogenous. The dielectric impedance spectra indicate that the dielectric constant of CCTO thick film can reach 3×103.


2004 ◽  
Vol 45 (2) ◽  
pp. 369-372 ◽  
Author(s):  
Tomohito Maki ◽  
Satoshi Sugimoto ◽  
Toshio Kagotani ◽  
Koichiro Inomata ◽  
Jun Akedo

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