Highly efficient visible-light photocatalyst Ag/Ag3PO4/Bi2O2CO3 enabled by the synergistic effect of heterojunction and surface plasma resonance

被引：9

作者：

Zhang, Caiting ^{[1
]}

Ni, Xiang ^{[1
]}

Xu, Wenchao ^{[1
]}

Chen, Jing ^{[1
]}

Wang, Lei ^{[1
]}

Liu, Rui ^{[1
]}

Hou, Wenhua ^{[2
]}

Zhu, Hongjun ^{[1
]}

机构：

[1] Nanjing Tech Univ, Sch Chem & Mol Engn, Nanjing 211816, Peoples R China

[2] Nanjing Univ, Sch Chem & Chem Engn, Key Lab Mesoscop Chem MOE, Nanjing 210023, Peoples R China

来源：

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2023年 / 166卷

关键词：

Photocatalyst; Ag; Ag3PO4; Visible light; Heterojunction; Surface plasma-resonance; COMPOSITE; DEGRADATION; DRIVEN; CONSTRUCTION; OXIDATION; PERFORMANCE; FABRICATION; REDUCTION; CO2; NO;

D O I：

10.1016/j.mssp.2023.107704

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Constructing heterojunctions to address effective charge separation and transformation is one of the crucial paths to increasing photocatalytic properties. Here, a novel ternary heterojunction photocatalyst Ag/Ag3PO4/Bi2O2CO3 was synthesized by conventional hydrothermal and chemical precipitation tactics and analyzed with PXRD, SEM, TEM, and XPS respectively. The consequences of the analysis demonstrated that nanoparticles Ag/Ag3PO4 were attached to the surface of the Bi2O2CO3 self-assembled formative nanoflowers. Precursors such as prepared Ag/ Ag3PO4/Bi2O2CO3 demonstrated high-efficiency photocatalytic performance and were more reusable than the precursor Ag/Ag3PO4 and Bi2O2CO3 by visible-light-induced methylene blue (MB) photodegradation. The raised photocatalytic property may contribute to the synergistic influence between forming Ag/Ag3PO4/Bi2O2CO3 heterojunction and local surface plasma-resonance effect caused by the Ag precious metal promoting photogenerated charge carries separation efficiency, hindering the electron-hole pair recombination. Moreover, quenching experiments and ESR tests showed that hydroxyl and superoxide radicals played an important role in photodegradation. Finally, a potential photocatalytic mechanism of the Ag/Ag3PO4/Bi2O2CO3 for the electron/ hole transfer procedure was proposed.

引用

页数：9

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