Preparation and Characterization of Zeolite/TiO? Cement-Based Composites with Excellent Photocatalytic Performance.

ABSTRACT: A zeolite/TiO? composite (ZTC) was applied to prepare a high-quality photocatalytic cement-based material (PCM). The acetone degradation experiment and micro measurements including XRD(X-Ray Diffractometer), SEM-EDS(Scanning Electron Microscope-Energy Dispersive Spectrometer), BET(BET Specific Surface Area Tester), FTIR(Fourier Transform Infrared Spectrometer) were conducted to characterize the photocatalytic efficiency and physicochemical properties of PCM, respectively. Results show that TiO? particles disperse on the surface of a PCM homogeneously and provide abundant active sites for photocatalytic reactions. Compared to a normal photocatalytic cement-based material (NPCM), the TiO? content of a PCM is lower and its photocatalytic efficiency is higher. The ZTC frees TiO? particles from the impacts of cement hydration products and increases the adsorption volume of acetone. The photocatalytic performance of the PCM was stable after repeated tests. Using the ZTC as a photocatalyst has a prominent effect on the photocatalytic performance of the PCM.

SUBMITTER: Liao G 

PROVIDER: S-EPMC6316990 | biostudies-other | 2018 Dec

REPOSITORIES: biostudies-other