Phase Engineering of Sodium Niobate Nanorods for Weak Visible-light Photo-Piezoelectric Synergistic Catalyst Optimization
LIU Yang
ZHANG Shule
LI Xinyue
LIU Yanran
LU Jiashan
LU Xiangyang
XU Zhemi
Abstract：Semiconductors can absorb light to produce electron hole pairs,and degrade environmental waste via photocatalytic process.However,the catalytic efficiency is limited by environmental light condi-tions and weather.Therefore,it is necessary to develop catalysts that can synergistically employ water wave and light energy in the environment to effectively improve the degradation efficiency of pollutants.Sodium niobite with perovskite structure shows great potential in such photo-piezocatalysis owing to its suitable energy gap and piezoelectric properties.In this work,two sodium niobate nanorods with different phases have been synthesized via a hydrothermal method.Although both of the sodium niobite nanorods have the similar photocatalytic activity,compared to NaNbO3,Na7(H3O)Nb6O1914(H2O)shows higher piezoelectric properties,which promotes the separation of photogenerated electron hole pairs in the process of synergistic piezo-photocatalysis,and greatly improved the degradation efficiency of antibiotics in water.The phase regulation and catalytic mechanism of the materials were further studied,and it was revealed that the holes and hydroxyl radicals are critical in the catalytic process.The results can provide guide for the design and optimization of high efficiency piezo-photo-collaborative catalysts.
Keywords：sodium niobatepiezo-photocatalystcarrier separationpiezoelectric effect
Publication Date：2024-06-28
Online Publishing Date：2026-08-28(First online date of this platform, not the publication date of the document)
Pages：8( 34-41 )