Design of a novel photocatalytic gypsum plaster : with the indoor air purification property

This article addresses the design of a new photocatalytically active gypsum plaster. A hemihydrate in beta type is used as binder to design this material and a carbon modified TiO2 that can be activated by visible light is used as photocatalyst. An own developed test setup to assess the indoor air purification capacity of the developed material is presented. The new product possesses the indoor air pollutants removal capacity. The air pollutants removal ability is related with not only the dosage of the applied photocatalyst but also strongly with the physical property of the resulting matrix such as the porosity.