Sonocatalysis of the magnetic recyclable layered perovskite oxides

Xiaoning Li; Xiaofeng Yin; Wen Gu; Liuyang Zhu; Huan Liu; Guobin Zhang; Zhengping Fu; Yalin Lu

doi:10.1016/j.ultsonch.2018.08.008

Sonocatalysis of the magnetic recyclable layered perovskite oxides

Ultrason Sonochem. 2018 Dec:49:260-267. doi: 10.1016/j.ultsonch.2018.08.008. Epub 2018 Aug 11.

Authors

Xiaoning Li¹, Xiaofeng Yin², Wen Gu², Liuyang Zhu², Huan Liu², Guobin Zhang¹, Zhengping Fu³, Yalin Lu⁴

Affiliations

¹ National Synchotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, PR China.
² CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, PR China.
³ CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, PR China; Synergetic Innovation Center of Quantum Information and Quantum Physics & Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, PR China. Electronic address: fuzp@ustc.edu.cn.
⁴ National Synchotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, PR China; CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, PR China; Synergetic Innovation Center of Quantum Information and Quantum Physics & Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, PR China. Electronic address: yllu@ustc.edu.cn.

PMID: 30122464
DOI: 10.1016/j.ultsonch.2018.08.008

Abstract

Sonocatalysis fascinates to utilize mechanical energy that universally exists in the environment. A big problem for the practical application of sonocatalysts is the incapability of recyclability, which is necessary for resource saving and secondary pollution control. In this work, Bi₇Fe_2.75Co_0.25Ti₃O₂₁ was firstly explored as a new sonocatalyst with magnetic recyclability. The magnetic catalysts can be easily collected with a magnetic bar after sonocatalytic reactions, and the structure and efficiency were kept after being recycled. Since the mechanism of sonocatalysis under ultrasonic vibration is still not fully understood, experiments including samples with different polarization and morphology, under different frequencies and intensities of ultrasonic radiation were conducted. The results suggested that the sonocatalytic efficiency was in proportion to polarization instead of morphology and a possible mechanism of squeezed model was proposed.

Keywords: Magnetic; Piezoelectric; Polarization; Recyclable; Sonocatalysis.