Piezotronics boosted plasmonic localization and hot electron injection of coralline-like Ag/BaTiO3 nanoarrays for photocatalytic application

被引：18
作者：
Fu, Yongming [1 ]
Ren, Zeqian [1 ]
Guo, Lixia [1 ]
Li, Xiu [1 ]
Li, Yuqing [1 ,2 ]
Liu, Wenliang [1 ,2 ]
Li, Peng [1 ]
Wu, Jizhou [1 ,2 ]
Ma, Jie [1 ,2 ]
机构：
[1] Shanxi Univ, Inst Laser Spect, Sch Phys & Elect Engn, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China
[2] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY C | 2021年 / 9卷 / 37期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
OXIDE INTERFACES; NANOSTRUCTURES; NANOPARTICLES; WATER; DEGRADATION; POLLUTANTS; RESONANCE; FILM;
D O I：
10.1039/d1tc02559g
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Metal-semiconductor piezo-photocatalysts are generally investigated due to their high photocatalytic performances by the coupling effect of piezotronics and localized surface plasmon resonance (LSPR). However, the mechanism is still indistinct, even the charge migration route is disputable. Here, the electron migration from Ag to BaTiO3 has been confirmed by electron spin resonance (ESR) and radical trapping experiments. Furthermore, this work first proposes that piezoelectric field can promote the photocatalytic properties through electrical modulation of plasmon-exciton interaction. To exactly reveal the mechanism, the piezo-photocatalysis process is fully simulated by numerical analysis and finite element method (FEM). The unabridged mechanism of piezotronics boosted photocatalysis of LSPR-BaTiO3 shows that piezoelectric field can modulate LSPR to generate more hot electrons, suppress Schottky barrier for improved hot electron injection from Ag to BaTiO3 and restrain the recombination of electron-hole pairs by spatial separation of opposite charges.
引用
收藏
页码：12596 / 12604
页数：9
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