Pt-based TiO2 photocatalytic systems: A systematic review

It is belived that clean energy and sustainable environment are big issues, which are linked are considered as great challanges all around the world. TiO2, which is known for its highly promising semiconductor properties, has been applied in the fields of energy/environment-related applications. In addition, a further attention has been paid to improve the photocatalytic efficiency of TiO2-based catalysts using several modification techniques. For this reason, the introduction of platinum (Pt), known as a noble metal, into TiO2 structure has been considered as an effective strategy. This strategy presents a better separation efficiency of electron-hole pairs resulting in a higher photocatalytic activity of the catalyst. This systematic review is centered on the synthesis, physio-chemical properties and applications of Pt-based TiO2 catalysts with a special attention to energy and environmental applications. Finally; limitations, challenges and future prospects of Pt-modified TiO2 photocatlytic systems are also briefly addressed.