Hydrogen Production from Photocatalytic Splitting of Water/Methanol Solution over a Mixture of P25-TiO2 and AgxO 


Vol. 21,  No. 4, pp. 271-277, Dec.  2015
10.7464/ksct.2015.21.4.271


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  Abstract

A photocatalyst which mixed by the commercialized P25-TiO2 and a synthesized AgxO was used in an appropriate weight ratio to effectively produce hydrogen gas in this study. The AgxOs were synthesized with the conventional sol-gel method, and tetramethylammonium hydroxides were added at the synthesis process in order to stabilize the solutions, and then the solutions were heat-treated at the temperatures of -5, 25, and 50 ℃, resulted to obtain the three types of silver oxides. Physicochemical properties of the synthesized AgxOs were identified through X-ray diffraction analysis (XRD), scanning emission microscopy (SEM), ultraviolet-visible spectroscopy, and X-ray photoelectron spectroscopy (XPS). In the photolysis results of water/methanol (weight ratio 1:1) solution, the mixture of P25-TiO2/AgxO exhibited a significantly higher hydrogen gases evolution, compared to that of pure P25-TiO2. Additionally, the addition of H2O2 as an supplement oxidant and in AgxO synthesized at 50 ℃ improved the hydrogen production efficiency. In particular, the emitted hydrogen gases reached to 13,000 μmol during 8 hours when a mixed catalyst, AgxO of 0.1 g and P25-TiO2 of 0.9 g, were used.

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  Cite this article

[IEEE Style]

K. KM, J. KM, P. NK, L. TJ, K. M, "Hydrogen Production from Photocatalytic Splitting of Water/Methanol Solution over a Mixture of P25-TiO2 and AgxO," Clean Technology, vol. 21, no. 4, pp. 271-277, 2015. DOI: 10.7464/ksct.2015.21.4.271.

[ACM Style]

Kim KM, Jeong KM, Park NK, Lee TJ, and Kang M. 2015. Hydrogen Production from Photocatalytic Splitting of Water/Methanol Solution over a Mixture of P25-TiO2 and AgxO. Clean Technology, 21, 4, (2015), 271-277. DOI: 10.7464/ksct.2015.21.4.271.

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