In this study,a novel tourmaline/TiO2 composite photocatalytic material (TT8.5) was prepared by in-situ sol-gel method.Through pollutant removal experiments and combined with XRD,SEM-EDS,BET and other characterization analyses,the removal effect and mechanism of this composite for tetracycline (TCH) treatment under different water quality conditions were systematically investigated.The results showed that under the conditions of 20 mg/L TCH,0.25 g/L TT8.5 dosage,and 1h adsorption-photocatalysis integrated reaction,The removal rate of TCH from water was up to 52% (removal capacity 42 mg/g).Under the same experimental conditions,TCH removal rate in river water could keep approximately 50%,which was significantly higher than that of TiO2 and tourmaline.The excellent performance of this synthetic material was based on the “adsorption-catalysis” synergistic effect of tourmaline and TiO2,showing good anti-interference ability in actual water bodies.This study provides a new approach for the remediation of water bodies contaminated with low concentrations of antibiotics.
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