Insights into the Dual Z-Scheme and Piezoelectricity Co-Drive Photocatalyst for Ultra-Speed Degradation of Nitenpyram
A highly active catalyst AgI/Ag 3 PO 4 /BaTiO 3 with the synergistic effect of photocatalysis and piezoelectricity was prepared, which can remove 100% of Nitenpyram (NTP) in a wide pH range within 10 minutes. This piezo-photocatalyst AgI/Ag 3 PO 4 /BaTiO 3 with dual Z-scheme shows a higher NTP degradation rate than their mono-material and binary composites. The apparent rate constant of AgI/Ag 3 PO 4 /BaTiO 3 in NTP removal is 2.12 times that of the second-performing catalyst. In the quenching experiment, h + and ·O 2 - were observed to be the main active substance in NTP degradation and the former contributes the most. The dual Z-scheme mechanism and the built-in electric field are both beneficial for the separation of electron-hole pairs, as well as the extension of the photo-generated carrier lifetime. At last, the effect factor experiments proved that the prepared AgI/Ag 3 PO 4 /BaTiO 3 catalyst owns stable and efficient activity. This work provides novel guidance for the construction of highly efficient and stable piezo-photocatalytic heterojunction catalysts
Year of publication: |
[2022]
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Authors: | Xiong, Sheng ; Gong, Daoxin ; Deng, Yaocheng ; Feng, Chengyang ; Tang, Rongdi ; Huang, Ying ; Zhou, Zhanpeng ; Li, Ling ; Wang, Yongchang ; Zhao, Jia |
Publisher: |
[S.l.] : SSRN |
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freely available
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