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|Título:||Solar hydrogen production from aqueous solutions of ethanol at near ambient temperatures|
|Autor:||Rangel, C. M.|
Silva, R. A.
Fernandes, Vitor R.
Paiva, T. I.
|Editora:||EUROSUN 2008, 1st International Conference On Solar Heating, Cooling and Building|
|Resumo:||Nanostructured semi-conductor materials based on titanium dioxide, with effective photo-catalytic properties under UV illumination, were synthesized using sol-gel technology and characterized by X-Ray diffraction and scanning electron microscopy, with the objective of studying the photo-catalytic hydrogen production from water. The need to decrease the electron-hole recombination rate was accounted for by metal doping and the addition of ethanol as a hole trap. Aqueous suspensions of the semiconductor powders, with noble metal loadings (Pt) of 1.5 wt% were used and the effect of solution pH and temperature (20-70ºC) on hydrogen production were studied, for a selected catalyst concentration. Hydrogen production rates were found to be linear with solution temperature with values larger than published literature data.|
|Aparece nas colecções:||UPCH - Comunicações em actas de encontros científicos internacionais|
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|SOLAR HYDRORANG.pdf||300,81 kB||Adobe PDF||Ver/Abrir|
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