ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In this study, titanium dioxide thin film was prepared using the modified chemical vapordeposition. The parameters employed to control the preparation of the catalyst include thetemperature of water bath, the Ti(OC3H7)4/H2O ratio, the flow rate of carrier gas, the oxidationtemperature, the oxidation time, the calcination temperature, the rotating speed of furnace, and thespeed of geared motor. The orthogonal arrays in the design of experimental method proposed byTaguchi were adopted to conduct the multiple-factor experiment. The conversion rate of salicylicacid in the aqueous or heterogeneous phase photocatalysis experiment was employed to identify theoptimal conditions for assembly. The results indicated that a higher conversion ratio of the organicsubstance could be achieved under catalytic oxidation temperature of 400°C, calcination temperatureof 550°C, and spraying speed of 30 rpm and the optimal experimental conditions obtained in thisstudy were irradiation with intensity of 2.9 mW cm-2 on salicylic acid at concentration of 250 mg L-1by both agitation and aeration processes (dissolved oxygen level = 8.2mg O2 L-1) at pH 5, which couldachieve optimal hydroxyl radical yield of 5.1 ×10-17 M
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.47-50.351.pdf
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