Impact of remnant surface polarization on photocatalytic and antibacterial performance of BaTiO3

Effect of poling on piezocatalytic removal of muti‐pollutants using BaTiO3

“…Piezoelectric materials support charge separation under mechanical vibrations which can initiate catalytic reactions on the surfaces 26‐29 . Similar results were reported earlier from a couple of research groups recently 22,23,30,31 . The charge separation attributed to ultrasonic vibration is enhanced for a long time due to the polarization orientation through poling.…”

“…The bacterial cell walls are prone to denaturation and structure damage due to ROS attack. Other vital cellular organelles like mitochondria and DNA also get adversely affected by the rise in oxidative stress inside the bacterial cell 23,33‐35 . To assess the universality of peizocatalytic effect on bacterial cells, similar tests were performed on gram‐positive bacteria S ⋅ aureus .…”

“…It has been well explored for various physical and chemical modifications. However, reported studies have mostly examined dye degradation performance 22‐24 . It is to note that dyes are not only toxic pollutants but also other pollutants such as pharmaceuticals and bacterial cells are equally dangerous.…”

“…However, reported studies have mostly examined dye degradation performance. [22][23][24] It is to note that dyes are not only toxic pollutants but also other pollutants such as pharmaceuticals and bacterial cells are equally dangerous. To study the effect of piezocatalysis on a wide variety of pollutants, present study is planned.…”

Pyrocatalytic oxidation – strong size-dependent poling effect on catalytic activity of pyroelectric BaTiO3 nano- and microparticles

“…23,30,31 This is remarkable, since several studies of the related piezocatalysis have shown a strong increase of piezocatalytic activity through such a remanent alignment of ferroelectric dipoles inside ferroelectric particles. [32][33][34] In this work, the influence of the particle size on the pyrocatalytic activity of BaTiO 3 powder (BT) catalysts containing nanoparticles with nominal particle sizes of 100, 200 and 500 nm was investigated. It was shown under directly comparable conditions that the pyrocatalytic activity of BT catalysts correlates mainly with their BET surface area.…”