Sonication induces physical and chemical effects, such as promoting the mass transfer and active radical formation, that can be harnessed for process intensification in numerous fields, including photocatalysis. In this perspective, we discuss recent advances in the main domains where photocatalysis and ultrasound technology overlap, namely ultrasound-assisted synthesis of photocatalysts with controlled structural and morphological features and hybrid technologies combining ultrasound and light irradiation (sonophotocatalysis and piezo-enhanced photocatalysis). The latter, an external field-enhanced photocatalytic technology, is a relatively new approach that promises to boost photocatalytic efficiency (with enhancements up to 400%), even though significant challenges remain to be addressed. Finally, we offer some perspectives on the future of ultrasound-assisted photocatalysis, discussing current gaps in knowledge, economics, and scale-up issues.

Ultrasound waves at the service of photocatalysis: from sonochemical synthesis to ultrasound-assisted and piezo-enhanced photocatalysis / D. Meroni, C.L. Bianchi. - In: CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY. - ISSN 2452-2236. - 36:(2022 Aug). [10.1016/j.cogsc.2022.100639]

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

D. Meroni
Primo
;
C.L. Bianchi
2022-08

Abstract

Sonication induces physical and chemical effects, such as promoting the mass transfer and active radical formation, that can be harnessed for process intensification in numerous fields, including photocatalysis. In this perspective, we discuss recent advances in the main domains where photocatalysis and ultrasound technology overlap, namely ultrasound-assisted synthesis of photocatalysts with controlled structural and morphological features and hybrid technologies combining ultrasound and light irradiation (sonophotocatalysis and piezo-enhanced photocatalysis). The latter, an external field-enhanced photocatalytic technology, is a relatively new approach that promises to boost photocatalytic efficiency (with enhancements up to 400%), even though significant challenges remain to be addressed. Finally, we offer some perspectives on the future of ultrasound-assisted photocatalysis, discussing current gaps in knowledge, economics, and scale-up issues.
Piezo-phototropic; Piezocatalysts; Piezotronic effect; Sonication; Sonophotocatalysis; Sonosynthesis
Settore CHIM/02 - Chimica Fisica
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/933821
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