Near-infrared responsive Z-scheme heterojunction with strong stability and ultra-high quantum efficiency constructed by lanthanide-doped glass

Li, Guobiao ¹Huang, Shouqiang ²Li, Ke ¹Zhu, Nanwen ³Zhao, Bofeng ¹Zhong, Qi ¹Zhang, Zhihan ¹Ge, Dongdong ²Wang, Dong¹

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作者信息

1. Chinese Acad Sci
2. Jiangsu Univ Technol
3. Shanghai Jiao Tong Univ
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Abstract

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 Zscheme 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 center dot O2- and center dot 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.

Key words

NIR photocatalyst/Z-scheme heterojunction/Upconversion glass-ceramic/Stability/Built-in electric field/PHOTOCATALYTIC DEGRADATION/LIGHT/NANOSHEETS/MECHANISM/NANOPARTICLES/NORFLOXACIN/YB3+

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出版年

2022

Applied Catalysis

ISSN：0926-3373

被引量43

参考文献量52

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