Study on K_2Ti_4O_9 modified by Fe~(3+) cations in visible-light photocatalysis

摘要

K2Ti4O9, a photocatalyst lacks the response to visible light. This short article takes advantage of the ion exchange properties of K2Ti4O9 and Fe3+ cations that are intercalated to enhance photocatalysis by responding to visible light. The degradation of MB (methylene blue) by K2Ti4O9 treated with different Fe3+ cations amounts was studied, the optimal treatment concentration was determined and the photocatalytic performance was evaluated. The structure, morphology, and energy band characteristics of the photocatalyst were confirmed by XRD, SEM, XPS, UV-vis, PL, and electrochemical workstation.