Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.9/411
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.
Palavras-chave: Photo-catalytic
Hydrogen production
Doped-titanium dioxide
Ethanol
Data: 7-Out-2008
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.
URI: http://hdl.handle.net/10400.9/411
Aparece nas colecções:UPCH - Comunicações em actas de encontros científicos internacionais

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