Keywords
Sonochemistry
Semiconductor
Solar fuel
How to Cite
Abstract
Zirconate-based perovskites are materials with great potential in the field of photocatalysis due to their excellent electronic, optical, and catalytic properties. The absence of photoresponse to visible light and high percentage of charge carrier recombination make it far from optimal, leading to low yields in reactions like the hydrogen evolution one. Strontium zirconate perovskite-type materials, doped with copper and assisted by ultrasonic radiation were synthesized by the sol-gel method, for their possible application in hydrogen reduction. The structural, electronic, optical, and electrochemical properties were evaluated through X-ray diffraction (XRD), diffuse reflectance spectroscopy (DRS), and electrochemical characterization. The results strongly suggested that the best candidate for the application in HER is Cu0.03Sr0.97ZrO3 SQ, since both copper and the application of ultrasonic radiation generate changes in lattice parameters, type of band gap semiconductor (from indirect to direct), light absorption percentage, and finally, the reduction potential and current density of the catalyst.
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