Solvothermal Synthesis of Mesoporous TiO2 Using Sodium Dodecyl Sulfate for Photocatalytic Degradation of Methylene Blue

Mesoporous titanium dioxide (TiO 2 ) photocatalysts were synthesized via a solvothermal method using sodium dodecyl sulfate (SDS) as templates. The effect of the SDS concentration and solution pH value on the resulting TiO 2 catalyst and its photocatalytic activity were studied. The photocatalytic a...

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Bibliographic Details
Published in:Topics in catalysis 2020, Vol.63 (11-14), p.1121-1130
Main Authors: Huang, Chao-Wei, Sin, Wei-Cheng, Nguyen, Van-Huy, Wu, Yu-Chung, Chen, Wei-Yu, Chien, Andrew C.
Format: Article
Language:English
Subjects:
Catalysis
Catalytic activity
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Fourier transforms
Industrial Chemistry/Chemical Engineering
Infrared analysis
Light irradiation
Methylene blue
Original Paper
Pharmacy
Photocatalysis
Photodegradation
Physical Chemistry
Sodium dodecyl sulfate
Spectrum analysis
Titanium dioxide
Ultraviolet radiation
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Summary:Mesoporous titanium dioxide (TiO 2 ) photocatalysts were synthesized via a solvothermal method using sodium dodecyl sulfate (SDS) as templates. The effect of the SDS concentration and solution pH value on the resulting TiO 2 catalyst and its photocatalytic activity were studied. The photocatalytic activity was assessed by degradation methylene blue under low-power (8W × 4) UV light irradiation. The best performance showed that over 95% of methylene blue was degraded in 120 min and in the presence of S20 (20 mmol SDS addition, pH = 4). With the optimal addition of SDS, the crystal size was reduced, and the surface area was increased. In addition, some bidentate-sulfates (–SO 4 2− ) residues were observed within the prepared mesoporous TiO 2 . The Detail characterization of of the as-prepared TiO 2 samples were conducted by X-ray diffraction, Ultraviolet–Visible Spectroscopy, Scanning electron microscope, Brunauer-Emmett-Teller analysis, and Fourier-transform infrared spectroscopy, respectively.
ISSN:1022-5528
1572-9028
DOI:10.1007/s11244-020-01322-y