High entropy piezo-catalytic oxides for dye degradation

Ti Hsin^1*, Pao-Wen Chao¹, Ying Hao Chu^1,2,3

¹Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu city, Taiwan
²Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu city, Taiwan
³Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu city, Taiwan

* Presenter:Ti Hsin, email:ti.hsin@nycu.edu.tw

This research intends to use the piezoelectric effect to fabricate composite high-entropy piezoelectric catalysts so that the organic pollutants in the water can be effectively decomposed by vibrational stimuli even in a non-illuminated environment. With pulsed laser ablation in liquid (PLAL) and pulsed laser deposition (PLD) technique, Pb(Mg, Nb, Ti, Hf, Zr)O3 nanoparticles and thin films that possess piezoelectric, ferroelectric, and high-entropy lattice distortion effects can be successfully produced. The piezoelectric catalysts of this research induce multiple cations which can increase the activity of the catalyst, and the stability of redox reactions would not be affected by environmental factors such as intensity of illumination. It maintains high efficiency in dye degradation and provides a more suitable method for dealing with industrial wastewater.

Keywords: piezo-catalyst, nanoparticles, high entropy oxides, PLAL, PLD