Insights into the dual Z-scheme and piezoelectricity co-driven photocatalyst for ultra-speed degradation of nitenpyram

Sheng Xiong, Hao Zeng, Yaocheng Deng, Chengyang Feng, Rongdi Tang, Zhanpeng Zhou, Ling Li, Jiajia Wang, Daoxin Gong

Research output: Contribution to journalArticlepeer-review

Abstract

A highly active catalyst AgI/Ag3PO4/BaTiO3 with the synergistic effect of photocatalysis and piezoelectricity was prepared, which can remove 100 % of Nitenpyram (NTP) in a wide pH range within 10 min. This piezo-photocatalyst AgI/Ag3PO4/BaTiO3 with dual Z-scheme shows a higher NTP degradation rate than their mono-material and binary composites. The apparent rate constant of AgI/Ag3PO4/BaTiO3 in NTP removal is 2.12 times higher than the second-performing catalyst. In the quenching experiment, h+ and ·O2– 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/Ag3PO4/BaTiO3 catalyst owns stable and efficient activity. This work provides novel guidance for the construction of highly efficient and stable piezo-photocatalytic heterojunction catalysts.
Original languageEnglish (US)
Pages (from-to)138399
JournalChemical Engineering Journal
Volume451
DOIs
StatePublished - Aug 12 2022

ASJC Scopus subject areas

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering

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