# metadata.dc.description[].value
Treballs Finals de Grau de Química, Facultat de Química, Universitat de Barcelona, Any: 2014, Tutora: Pilar Ramírez de la Piscina

# metadata.dc.description.abstract[].value
TiO2 has become one of the most promising photocatalysts for hydrogen production based on
the water splitting reaction. The photocatalytic activity of TiO2 depends on its crystalline phase,
crystallinity, crystallite size and surface area. Moreover, there are different ways to increase the
photocatalytic activity of TiO2, such as coupling it with noble metals or adding other
semiconductors.
In this research work, 0,5%Pt/TiO2-x%M (M=In, Ga, Fe, Ru and x=0,19-1,26) photocatalysts
have been prepared with two types of TiO2 with similar textural characteristics but different
crystalline phase. The study has particularly focused on the photocatalysts containing indium
and gallium. Afterwards, the photocatalysts have been characterized by X-ray diffraction
(XRD), Raman Spectroscopy, Brunauer-Emmet-Teller (BET) method, UV–Vis diffuse
reflectance spectroscopy (DRS), temperature-programmed reduction-H2 (TPR) and X-ray
photoelectron spectroscopy (XPS).
The characteristics of the catalysts that have been studied are structural, textural and superficial properties, the band gap and the reduction behaviour.

# metadata.dc.title.alternative[].value
Preparació i caracterització de fotocatalitzadors basats en TiO2