AUTHOR=Liao Gang , She Anming , Chu Wenhai , Zuo Junqing , Yao Wu 

TITLE=Zeolite-Loaded Titanium Dioxide Photocatalytic Cement-Based Materials for Efficient Degradation of Drinking Water Disinfection Byproduct Trichloroacetamide

JOURNAL=Frontiers in Materials

VOLUME=8

YEAR=2021

URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2021.674287

DOI=10.3389/fmats.2021.674287

ISSN=2296-8016

ABSTRACT=<p>A two-step method was used to load TiO<sub>2</sub> on a cement matrix, and zeolite was chosen as intermediate support. TiO<sub>2</sub>@Zeolite composite coated photocatalytic cement-based material (PCM) was prepared. Some advanced characterization technologies including X-ray diffraction (XRD), scanning electronic microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and BET specific surface area (SSA) test were applied to characterize the physicochemical properties of as-prepared PCM. Photocatalytic degradation of trichloroacetamide (TCAcAm) was conducted to evaluate its photocatalytic efficiency. Results show that TiO<sub>2</sub>@Zeolite composite can improve the adsorption ability of PCM and TiO<sub>2</sub> particles were dispersed on the surface of PCM homogeneously providing abundant active sites for photocatalytic reactions. Moreover, TiO<sub>2</sub>@Zeolite composite can reduce the negative effect of cement on TiO<sub>2</sub>. The synergetic effect of TiO<sub>2</sub>@Zeolite composite can remarkably improve the photocatalytic degradation rate, reaching up to 97.8%. TiO<sub>2</sub>@Zeolite composite coated PCM holds great promise to eliminate water pollution.</p>