Comparison of photocatalytic reaction of commercial P25 and synthetic TiO2-AgCl nanoparticles

Sangchay, Weerachai; Sikong, Lek; Kooptarnond, Kalayanee

doi:10.1016/j.proeng.2012.01.1313

Cited by 62 publications

(25 citation statements)

References 11 publications

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“…9 The adsorption peak at 1638 cm −1 is hydroxyl group and indicates water molecule adsorbed on surface 10 . In the research of Sangchay et al, 11 the obvious peak of Ti-O bond in the TiO 2 -AgCl was observed at 653∼550 cm −1 by FTIR. Similar with the result above, the same Ti-O bond was also detected in the Mn 2 O 3 /TiO 2 which prepared by the mechanical chemical method.…”

Section: Resultsmentioning

confidence: 89%

Acetones Removal with Fe Doped Titanium Nano Tube Catalysts Prepared from Slag Iron in Steel Plant

Lin¹,

Cao²,

Chang³

2016

j nanosci nanotechnol

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TiO₂ has been studied most commonly because it has high stability, non-toxicity, high catalytic activity, and highly conductivity. Many studies have shown that TiO₂ would generate electron-hole pairs illuminated with UV and surround more energy than that before being illuminated. However, the surface area of TiO₂ is not large enough and the adsorption capacity is small. In this study, the titanium nano tube (TNT) catalysts were prepared to increase the surface area and adsorption capacity. The Fe-TNT was also prepared from slag iron since many slag iron cause waste treatment problems. In this study, the effect of Fe loading, including 0.77%, 1.13%, 2.24% and 4.50%, on acetone removal was also assessed since TNT doped with transitional or precious metals can be used to improve catalytic reaction efficiency. Furthermore, four kinds of VOCs concentration, including 250, 500, 1000 and 1500 ppm were tested. Four kinds of retention time, including 0.4, 0.8, 4.0 and 6.0 sec, and four kinds of dosage, including 0.15, 0.25, 0.30 and 0.45 g cm⁻³, were also assessed. In this study, the adsorption capacity of Fe-TNT was 18.8, 23.3, 28.9 and 32.6 mg g⁻¹ for acetone of 250, 500, 1000 and 1500 ppm, respectively. Four kinds of temperature, including 150, 200, 250 and 300 °C were tested in catalytic reaction system. The results showed removal efficiency increased with increasing temperature. The efficiency can be reached 95% under the conditions with the dosage higher than 0.3 g cm⁻³, temperature higher than 270 °C and retention time higher than 270 °C. Reaction efficiency was 20, 31, 41 and 96% at the temperature of 150, 200, 250 and 300 °C, respectively.

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Section: Resultsmentioning

confidence: 89%

Acetones Removal with Fe Doped Titanium Nano Tube Catalysts Prepared from Slag Iron in Steel Plant

Lin¹,

Cao²,

Chang³

2016

j nanosci nanotechnol

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“…After photo-treatment for a certain time, the concentration of treated solution was measured by UV-Vis (GENESYS™ 10S). The ratio of remained concentration to initial concentration of MB calculated by C/C 0 [14][15][16] was plotted against irradiation time in order to observe the photocatalytic degradation and the percentage degradation of the MB molecules was calculated by Eq. (2) [14,[17][18][19].…”

Section: Photocatalytic Propertiesmentioning

confidence: 99%

The Self-cleaning and Photocatalytic Properties of TiO2 Doped with SnO2 Thin Films Preparation by Sol-gel Method

Sangchay

2016

Energy Procedia

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In this study, TiO 2 doped with SnO 2 thin films were preparaed by the sol-gel method. The thin films were deposited onto glass substrate and calcinations at the temperature of 700 °C for 2 h with the heating rate of 10 °C/min. Doping concentrations were varied between 0 to 5 %mol. Microstructures of the fabricated thin films were characterized by SEM and XRD techniques. The photocatalytic properties of the thin films were also tested via the degradation of methylene blue (MB) solution under fluorescent irradiation. Finally, self-cleaning properties of thin films were evaluated by measuring the contact angle of water droplet on the thin films with and without fluorescent irradiation. The result showed that TiO 2 doped with 1 mol% of SnO 2 thin films has highest photocatalytic and selfcleaning properties under fluorescent irradiation.

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“…Therefore, the current study was undertaken and investigated the applicability of photocatalysis for the removal of selected VOCs at sub-ppm levels using one-dimensional TNTs, synthesized through a combined process of chemical and hydrothermal treatments. It is well known that the proportion of anatase and rutile in TiO 2 can vary with the pretreatment temperature, thereby influencing photocatalytic activity (Sangchay, Sikong, & Kooptarnond, 2012). Therefore, in the present study, TNTs were treated at various temperatures to examine the relationship between photocatalytic activity and annealing temperature.…”

Section: Introductionmentioning

confidence: 98%

One-dimensional titania nanotubes annealed at various temperatures for the photocatalytic degradation of low concentration gaseous pollutants

2015

Particuology

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Comparison of photocatalytic reaction of commercial P25 and synthetic TiO2-AgCl nanoparticles

Cited by 62 publications

References 11 publications

Acetones Removal with Fe Doped Titanium Nano Tube Catalysts Prepared from Slag Iron in Steel Plant

Acetones Removal with Fe Doped Titanium Nano Tube Catalysts Prepared from Slag Iron in Steel Plant

The Self-cleaning and Photocatalytic Properties of TiO2 Doped with SnO2 Thin Films Preparation by Sol-gel Method

One-dimensional titania nanotubes annealed at various temperatures for the photocatalytic degradation of low concentration gaseous pollutants

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