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Preparation and Characterization of Nanocrystalline TiO2 on Microsericite for High-Efficiency Photo-Energy Conversion of Methanol to Hydrogen

1
Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 80778, Taiwan
2
Photo-SMART (Photo-Sensitive Material Advanced Research and Technology) Center, National Kaohsiung University of Science and Technology, Kaohsiung 80778, Taiwan
3
Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
4
Research Center for Applied Sciences, Lac Hong University, Bien Hoa 810000, Vietnam
*
Authors to whom correspondence should be addressed.
Crystals 2019, 9(8), 380; https://doi.org/10.3390/cryst9080380
Received: 26 May 2019 / Revised: 16 July 2019 / Accepted: 22 July 2019 / Published: 24 July 2019
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Abstract

TiO2 and TiO2/sericite photocatalysts were successfully synthesized via the sol-gel method by adding a varying amount of acetic acid. The effect of acetic acid on TiO2 and TiO2/sericite photocatalysts was studied. The crystallite size, surface morphology, chemical composition, specific surface area, surficial functional groups, and light absorbance of the prepared photocatalysts were revealed by the analysis of X-ray diffraction (XRD), scanning electron microscope-energy dispersive spectrometry (SEM-EDS), nitrogen adsorption-desorption isotherms by using BET theory (Brunauer–Emmett–Teller), Fourier-transform infrared spectroscopy (FTIR), and UV-Vis absorption spectrometry. Photo-energy conversion of methanol to hydrogen was also conducted over the prepared photocatalysts. The best hydrogen production was achieved by using the TiO2/sericite photocatalyst to give a hydrogen production rate of 1424 μmol/g·h in 6 h of UV-light irradiation. View Full-Text
Keywords: titanium dioxide; sericite; sol-gel method; photocatalysts; hydrogen production titanium dioxide; sericite; sol-gel method; photocatalysts; hydrogen production
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Huang, C.-W.; Wu, M.-C.; Nguyen, V.-H.; Nguyen, B.-S. Preparation and Characterization of Nanocrystalline TiO2 on Microsericite for High-Efficiency Photo-Energy Conversion of Methanol to Hydrogen. Crystals 2019, 9, 380.

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