The effect of solvent of titanium precursor in the sol-gel process on the activity of TiO2 nanoparticles for H2 production
Publish place: Iranian Journal of Hydrogen & Fuel، Vol: 4، Issue: 2
Publish Year: 1396
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJHFC-4-2_005
تاریخ نمایه سازی: 17 تیر 1398
Abstract:
A modified sol-gel process has been found to significantly improve the photocatalytic activity of TiO2 nanoparticle in the process of solar hydrogen production. The surface of TiO2 nanoparticles were modified by the optimization of solvent of titanium precursor (acetic acid and/or ethanol) in the sol-gel method. A multi technique approach (SEM, XRD, FTIR, UV-DRS and TGA) was used to characterize the prepared TiO2 nanoparticles. The photocatalytic hydrogen production was tested using a suspension of photocatalyst TiO2 at 10 vol. % methanol under natural solar light. The produced hydrogen was subjected to gas chromatography with a continuous flow of N2 in the photoreactor system. It was found that the TiO2 nanoparticles synthesized with acetic acid as the solvent of titanium precursor, TiO2-AA, have a better photocatalytic activity for hydrogen production compared to nanoparticles synthesized with ethanol, TiO2-EA. The obtained results showed that the better crystallinity, small size and proper surface properties of TiO2-AA nanoparticles is due to higher photoactivity.
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Authors
Maryam Taherinia
Department of Chemistry, Maleke Ashtar University of Technology, Shahin-Shahr, Isfahan,Islamic Republic of Iran
Mohammad Nasiri
Department of Chemistry, Maleke Ashtar University of Technology, Shahin-Shahr, Isfahan,Islamic Republic of Iran
Ebrahim Abedini
Department of Chemistry, Maleke Ashtar University of Technology, Shahin-Shahr, Isfahan,Islamic Republic of Iran
Hamid Reza Pouretedal
Department of Chemistry, Maleke Ashtar University of Technology, Shahin-Shahr, Isfahan, Islamic Republic of Iran
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