Introduction Piezoelectric materials experience a change in electrical polarization in response to mechanical load, generating a temporary localized electric field that can be harnessed to catalyze redox reactions—termed piezocatalysis.1 Mechanically activating piezoelectric ceramic particles, such as BaTiO3 and ZnO, in aqueous suspension using ultrasound can generate localized electrochemical potentials sufficient to split water ( =−1.23 V) and form radicals.2 Past studies have identified...
