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Photo-induced PM2.5 adsorption in molecular ferroelectric heterostructures

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Abstract

Ferroelectrics are polar materials with large spontaneous polarization. Particulate matter, PM2.5, may be polarized and adsorbed by ferroelectrics due to spontaneous polarization. Micron-sized rods of molecular ferroelectric material diisopropylammonium perchlorate (DIPAP) were synthesized by a freeze-drying method to adsorb PM2.5. After low temperature freeze-drying and subsequent high temperature heating, a stable heterojunction DIPAP structure formed with a ferroelectric phase and non-switching phase. The special ferroelectric heterostructure in the DIPAP micron rods gave it excellent photo-induced PM2.5 adsorption. The photoelectric effect has an important role in the photo-induced adsorption. This work shows that molecular ferroelectric heterostructure materials have the potential to be used in creating dust-free spaces and simple outdoor particulate matter removal strategies.

Graphical abstract: Photo-induced PM2.5 adsorption in molecular ferroelectric heterostructures

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Supplementary files

Article information


Submitted
28 Apr 2020
Accepted
22 Jun 2020
First published
23 Jun 2020

J. Mater. Chem. C, 2020, Advance Article
Article type
Paper

Photo-induced PM2.5 adsorption in molecular ferroelectric heterostructures

K. Gao, C. Liu and B. Zhang, J. Mater. Chem. C, 2020, Advance Article , DOI: 10.1039/D0TC02057E

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