Abstract
The pollution of antibiotics and heavy metals in water environment is considered to be an urgent environmental problem. However, designing a photocatalyst that can simultaneously remove these contaminants remains a challenge. 0D/2D Cd0.5Zn0.5S/Ti3C2 (CZSMX) hybrids were fabricated by uniformly coating Cd0.5Zn0.5S (CZS) nanospheres on the surface of Ti3C2 nanosheets. The removal efficiency of the suitable CZSMX hybrid on tetracycline hydrochloride (100 mg/L), 7-amino-cephalosporin (100 mg/L), and Cr(VI) (50 mg/L) is 92%, 97%, and 72%, respectively. Meanwhile, it still exhibits excellent photocatalytic removal activity in the mixed contaminants solution. Additionally, CZSMX-3 exhibits outstanding physical and chemical stability after 5 cycles. Importantly, the enhanced photocatalytic activity of CZSMX is attributed to the accelerated charge carrier separation due to the excellent electrochemical and photochemical properties of Ti3C2. Overall, this study provides a strategy for the efficient collaborative removal of antibiotics and heavy metal from wastewater by photocatalysis of metal sulfide based photocatalysts.
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