A novel NiO/BaTiO3 heterojunction for piezocatalytic water purification under ultrasonic vibration

• DOI: 10.1016/j.ultsonch.2022.106285
• Publication Date: 2022-12-28T17:21:32Z
• Authors: Kaiqi Wang; Bingxin Li; Chunran Zhao; Shude Yuan; Chengshuo Zhang; Xiaoya Liang; Junfeng Wang; Ying Wu; Yiming He
• Keywords: Non-blocking I/O; Degradation

This work designed and prepared a novel heterojunction composite NiO/BaTiO3 through method of photodeposition used it in piezocatalytic dye removal for the first time. Results test indicated that presented superior efficiency stability RhB degradation under vibration ultrasonic waves. The best sample synthesized light irradiation 2 h displayed an rate 2.41 h-1, which was 6.3 times faster than pure BaTiO3. By optimizing reaction conditions, constant can further reach 4.14 h-1 A variety systematic characterizations were executed to determine reason excellent performance NiO/BaTiO3. band potentials NiO BaTiO3 are found coincide, at their contact interface, they may create type-II p-n structure. Driven by potential difference built-in electric field, piezoelectrically enriched charge carriers migrate between BaTiO3, resulting improved separation increase piezoelectric catalytic performance. study provide catalyst promising idea design highly efficient catalysts field catalysis.