异质结
光催化
材料科学
镧系元素
量子产额
量子效率
兴奋剂
光电子学
化学工程
光化学
化学
催化作用
光学
有机化学
离子
物理
荧光
工程类
作者
Guobiao Li,Shouqiang Huang,Ké Li,Nanwen Zhu,Biying Zhao,Qi Zhong,Zhihan Zhang,Dongdong Ge,Dong Wang
标识
DOI:10.1016/j.apcatb.2022.121363
摘要
Lanthanide-doped near-infrared (NIR) photocatalyst still obstructed by the less impressive photocatalytic efficiency and stability. In this work, we report a novel strategy by introducing the lanthanide-doped ferroelectric perovskites of SiTiO3 and Sr2Bi4Ti4O15 into the glass-ceramic (GC), then an efficient and stable NIR photocatalyst was fabricated through the method of facile in-situ HCl etching GC. The results show that Sr2Bi4Ti4O15, SrTiO3, and BiOCl were exposed to the superficial coating of the core-shell structured photocatalyst and constructed Z-scheme heterojunction, the heterojunction with built-in electric field could significantly facilitate the charge carriers separation and harvest NIR light for photocatalytic reaction simultaneously. The evident increase of Lewis basic sites over defect-rich photocatalyst is found, the •O2- and •OH radicals are generated. During the degradation of norfloxacin (NOR) under NIR light irradiation for 90 min, the NOR degradation rate is 86% (TOC removal rate is 30.7%), the high apparent quantum yield of 2.3% is achieved.
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