Combining photocatalysis with the other physical-field is an efficient way to improve the performance of photocatalysis. The piezoelectric effect on the heterogeneous photocatalytic hydrogen production of SrTiO₃ (STO) nanoparticles was studied in this paper. It was found that the piezoelectric effect generated by the ultrasonic cavitation (sonophotocatalysis) had a profound influence on heterogeneous photocatalytic hydrogen production with or without sacrificial agents. Notably, the sonophotocatalytic hydrogen production of STO was related to the viscosity of sacrificial agents and the position of the ultrasonic vibrators. The mechanism of the performance changes by sonophotocatalysis was investigated by in-situ deposition Pt nanoparticles, which were found to aggregate obviously on STO nanoparticles' surface. Thus, ultrasonic cavitation would build a piezoelectric potential on the local surface of STO that would inhibit photo-generated carriers migrating to the surface.

将光催化与其他物理场相结合是提高光催化性能的有效方法。压电效应对SrTiO ₃非均相光催化制氢的影响（STO）纳米粒子在本文中进行了研究。发现由超声空化（声光催化）产生的压电效应对有或没有牺牲剂的非均相光催化氢产生具有深远的影响。值得注意的是，STO的声光催化制氢与牺牲剂的粘度和超声振动器的位置有关。通过原位沉积Pt纳米粒子研究了声光催化性能变化的机理，发现Pt纳米粒子明显聚集在STO纳米粒子的表面。因此，超声空化将在STO的局部表面上建立压电势，这将抑制光生载流子迁移到表面。