Surface-selective bactericidal effect of poled ferroelectric materials

Abstract

The present study deals with the antibacterial performance of poled ferroelectric materials. For this purpose, Ba0.85Ca0.15Ti0.9Zr0.1O3 (BCZTO) piezoelectric ceramic has been synthesized and poled at different electric fields. The antibacterial performance of BCZTO poled and unpoled samples were examined. Approximately 88% of Escherichia coli degradation was recorded at the end of 1 h without any external intervention. Surface selective bacterial degradation was observed in poled materials. It was found that reactive oxygen species produced through electrocatalysis of water molecules play a crucial role in bacterial disinfection. The rate of bacterial degradation was further increased using ultrasonication with poled piezoelectric ceramics. Complete abolition of bacterial growth was achieved within 30 min of treatment with poled piezoelectric ceramic in an ultrasonicator. Results indicate that ferroelectric materials have substantial untapped potential in the field of antimicrobial methods.

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.…”

“…[26][27][28][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 poled sample displays effective bacterial degradation in an aqueous medium with a high reaction rate under vibration.…”

Solar/visible light photocatalytic dye degradation using BaTi1−xFexO3 ceramics

“…Looking to the emerging trends, organic pollutant degradation with visible light has become a topic of prime interest. Other materials, such as ZnO, WO 3 , Fe 2 O 3 , ZnS, CuO, WS 2 , and many ferroelectric materials such as BaTiO 3 , LiNbO 3 , and other BaTiO 3 ‐based materials, have also been well set down for their dye degradation abilities through photocatalysis process for applications like water cleaning 6,9–17 . However, their low photocatalytic efficiency resulted in the tailoring of these materials.…”

“…Other materials, such as ZnO, WO 3 , Fe 2 O 3 , ZnS, CuO, WS 2 , and many ferroelectric materials such as BaTiO 3 , LiNbO 3 , and other BaTiO 3based materials, have also been well set down for their dye degradation abilities through photocatalysis process for applications like water cleaning. 6,[9][10][11][12][13][14][15][16][17] However, their low photocatalytic efficiency resulted in the tailoring of these materials. Many other methods, like bandgap tuning, doping of transition metals, and implantation of anions, are utilized to enhance photocatalytic activities.…”

Electro-mechanical and Polarization-Induced Antibacterial Response of 45S5 Bioglass–Sodium Potassium Niobate Piezoelectric Ceramic Composites

“…In addition, the polarized substrates increase the hydrophilicity of the surface, irrespective of their polarity. 39,100 This increase in hydrophilicity also plays an important role in reducing the bacterial adhesion. 100 Overall, the present study reveals that the addition of a piezoelectric NKN secondary phase in BG improves the mechanical, electrical, and dielectric behavior as well as antibacterial response of BG−NKN composite systems.…”