Surface Plasmon Effect of Ti3c2 Mxene and Degradation of Antibiotics Under Full Spectrum

Abstract

Ti3C2 MXene exhibits the surface plasmon effects of transverse surface plasmon resonance and longitudinal surface plasmon resonance due to its surface holes and internal bound electrons. When excited by the simulated sunlight, the high energy hot holes on the surface of plasma Ti3C2 MXene crystal directly oxidize the antibiotics to small molecules. The electrons bound in the crystal lag behind the excitation of holes and migrate to the surface to form the high energy hot electrons which react with the adsorbed O2 to form ·O2 - to degrade the antibiotics. After 150 min of near infrared light irradiation, the degradation rates of tetracycline and ciprofloxacin by Ti3C2 MXene are 49.17% and 48.41%, respectively. This study indicates that Ti3C2 MXene has significant degradation effects on antibiotics in the full spectral range. Our work intends to provide a valuable reference for the design of the MXene full spectral photocatalyst.

Keywords: Ti3C2 MXene, surface plasmon effect, full spectrum, Degradation