A Z-scheme iron-based hollow microsphere with enhanced photocatalytic performance for tetracycline degradation

摘要: Photocatalytic oxidation has been considered as a potential method for elimination of organic contaminants with low energy consumption. Photodegradation performance is subject to some factors: bandgap, band-edge positions and carrier separation efficiency. Z-scheme heterojunction system can improve photocatalytic through optimizing these factors. Thus, α-Fe2O3/g-C3N4 hollow microsphere was obtained via controlled crosslinking hydrolysis process (uniform dispersion two components: crosslinking; structure: from self-sacrifice glucose). Numerous constructed pores are beneficial tetracycline (TC) adsorb on photocatalysts (7.9 mg/L), which further accelerates TC degradation process. rate increased 67% over α-Fe2O3/g-C3N4-4 (g-C3N4: 48%, α-Fe2O3: 44%) after 2 h irradiation, results the quick capture photogenerated electron–hole pairs reduction abilities photocatalysts. This work presents an insight into promoting efficiency antibiotics simultaneously reducing photocatalyst cost.