Electrochemical and piezocatalysis properties of Bi0.5(Na0.9K0.1)0.5TiO3 ceramic

Abstract

Piezocatalysis activity was examined for poled and unpoled Bi0·5(Na0·9K0.1)0.5TiO3 (BNKT) ceramic. BNKT was synthasized using solid state routes and was thoughly characterized using X-ray diffraction, Scanning electron microscopy,and XPS. BNKT was examined for piezocatalysis inder ultrasonication for Rhodamine B (RB) dye. Poling was performed using Corona poling setup and piezoelectric nature was evaluated using d33. d33 was found to be ±45pC/N for sintered sample. The effect of electric poling was significant in view of dye degradation performance. Poled BNKT sample degraded ∼90% the RB dye solution in 180 min which was segnificanly higher than that of unpoled sample. The influence of electric poling on the oxygen reduction and hydrogen evolution process in alkaline fuel cells and electrolyzer is also reported.