Enhancement of pyroelectric catalysis of ferroelectric BaTiO3 crystal: The action mechanism of electric poling

Lin Chen, Huamei Li, Zheng Wu, Liangliang Feng, Shigang Yu, Hongfang Zhang, Ju Gao, Yiu Wing Mai, Yanmin Jia

Research output: Journal article publicationJournal articleAcademic researchpeer-review

54 Citations (Scopus)

Abstract

In this work, the commercial BaTiO3 crystal was cut into the same wafers along (101) crystal plane. These wafers were poled under various poling fields to study the effect of electric poling on the pyroelectric catalysis performance during the process of dye decomposition. Under 140 cold-hot (28 - 60 °C) cycles, the dye decomposition ratio using the unpoled BaTiO3 catalyst is close to 0, whereas it reaches ~ 56% using the BaTiO3 poled under a poling field of ~5.00 kV/mm. The poling treatment shows a great influence on the pyroelectric catalysis since it directly affects the number of charges generated on the surface of BaTiO3 crystal under the external temperature variation excitation. The generation of these middle product hydroxyl radicals further proves the reaction mechanism of the pyroelectric catalysis. The good catalysis and recyclability performance suggests the poled BaTiO3 pyroelectric crystal is an potential material in dye wastewater remediation through utilizing room-temperature thermal energy.

Original languageEnglish
Pages (from-to)16763-16769
Number of pages7
JournalCeramics International
Volume46
Issue number10
DOIs
Publication statusPublished - Jul 2020
Externally publishedYes

Keywords

  • BaTiO
  • Dye decomposition
  • Electric poling
  • Ferroelectricity
  • Pyro-catalysis
  • Pyroelectric effect

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'Enhancement of pyroelectric catalysis of ferroelectric BaTiO3 crystal: The action mechanism of electric poling'. Together they form a unique fingerprint.

Cite this