Engineering ZIF-8 modified NaNbO3 perovskite photocatalyst toward high efficiency photocatalysis based on piezo-phototronic effect

Promoting the effective separation of photo-generated charge carriers is vitally crucial to enhancing the photocatalytic performance. The piezo-phototronic effect, which could regulate the directional migration of photogenerated carriers, has been regarded as an effective strategy of separating carriers. Herein, the NaNbO 3 @ZIF-8 which possesses efficient carrier separation property is prepared to achieve significant increase of H 2 evolution rate (1.16 mmol g −1  h −1 ) under the coupling effects of ultrasonic vibration and light irradiation, which is 1.9 times than that of NaNbO 3 . This work provides a strategy for studying the promotion of carrier separation and promoting photocatalytic performance under an external field.