Improving hydrogen production via water splitting over Pt/TiO2/activated carbon nanocomposite
| Autor: | Mohammad Reza Fadaie, Ruhollah Khajavian, Moones Hakamizadeh, Babak Bozorgi, Azadeh Tadjarodi, Shahrara Afshar |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element Condensed Matter Physics chemistry.chemical_compound Fuel Technology chemistry Photocatalysis medicine Water splitting Methanol Mesoporous material Carbon Photocatalytic water splitting Hydrogen production Nuclear chemistry Activated carbon medicine.drug |
| Zdroj: | International Journal of Hydrogen Energy. 39:7262-7269 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2014.03.048 |
| Popis: | Mesoporous TiO2/AC, Pt/TiO2 and Pt/TiO2/AC (AC = activated carbon) nanocomposites were synthesized by functionalizing the activated carbon using acid treatment and sol–gel method. Photochemical deposition method was used for Pt loading. The nano-photocatalysts were characterized using XRD, SEM, DRS, BET, FTIR, XPS, CHN and ICP methods. The hydrogen production, under UV light irradiation in an aqueous suspension containing methanol has been studied. The effect of Pt, methanol and activated carbon were investigated. The results show that the activated carbon and Pt together improve the hydrogen production via water splitting. Also methanol acts as a good hole scavenger. Mesoporous Pt/TiO2/AC nanocomposite is the most efficient photocatalyst for hydrogen production compared to TiO2/AC, Pt/TiO2 and the commercial photocatalyst P25 under the same photoreaction conditions. Using Pt/TiO2/AC, the rate of hydrogen production is 7490 μmol (h g catal.)−1 that is about 75 times higher than that of the P25 photocatalyst. |
| Databáze: | OpenAIRE |
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