Piezoelectric effect enhanced photocatalysis in environmental remediation: State-of-the-art techniques and future scenarios

Piezoelectric-Induced Internal Electric Field in Bi2WO6 Nanoplates for Boosting the Photocatalytic Degradation of Organic Pollutants

“…ZnO, BaTiO 3 , MoS 2 , MoSe 2 , PVDF, and PbTiO 3 have been reported to exhibit piezoelectric properties. Researchers have combined piezoelectric materials and photocatalysts in one system to accelerate the charge transfer and separation for enhanced photocatalytic performance . Particularly, piezoelectric materials could generate internal electric fields to separate photogenerated electrons and holes in photocatalysts with opposite charges, consequently improving photocatalytic activity.…”

Emerging investigator series: hetero-phase junction 1T/2H-MoS2 nanosheets decorated by FeOOH nanoparticles for enhanced visible light photo-Fenton degradation of antibiotics

“…4 Thus, researchers have devoted much effort to enhancing the cycling rate of Fe 2+ /Fe 3+ as well as the utilization efficiency of H 2 O 2 . 5,6 For example, coupling with an electrical field could significantly promote the recycling of Fe 2+ /Fe 3+ , 7 but this requires extra operational investment and energy consumption.…”

Ultrasound waves at the service of photocatalysis: From sonochemical synthesis to ultrasound-assisted and piezo-enhanced photocatalysis

“…sound waves of frequency above 20 kHz, can benefit photocatalysis in multiple ways, from promoting the synthesis of photocatalysts with tailored physicochemical properties to enhancing reaction efficiency via synergisms between ultrasound and light irradiation in sonophotocatalysis [2]. Moreover, piezo-enhanced photocatalysis has recently emerged as a promising external field-enhanced photocatalytic technology [3,4] that can significantly promote the efficiency of both downhill and uphill reactions [5][6][7].…”