Preparation and photocatalytic properties of TiO2/melamine sponge monolith

Abstract

Due to the nano-photocatalysts are difficult to recycle in application, TiO2/melamine sponge monolith (TM) photocatalysts composite were successfully prepared by hydrothermal method using melamine sponge (MS) as the carrier and framework. The TMs were characterized by XRD, FT-IR, SEM, UV-Vis DRS and other analytical methods. The effect of hydrothermal time on the photocatalytic performance of TM was studied. The results show that the TM has integrated structure and TiO2 is firmly attached when the hydrothermal time is 16 h. The degradation rate of methylene blue (MB) after 120 min irriadiation reaches 99.3%. TM has a high stability of repeated use. The effective combination of TiO2 and MS enhances the dispersion and light utilization rate of TiO2, thereby improving the photocatalytic performance of TM and facilitating recycling.

Keywords

• melamine sponge
• titanium dioxide (tio2)
• photocatalysis composite
• monolith
• methylene blue