Visible-light photocatalytic hydrogen production in a narrow-bandgap semiconducting La/Ni-modified KNbO<sub>3</sub> ferroelectric and further enhancement <i>via</i> high-field poling
Wenbin Tang, Xiaogang Xue, Changlai Yuan, Jun Chen, Lei Miao, Qin Feng, Jiwen Xu, Guanghui Rao, Jiang Wang, Changrong Zhou, Yiping Guo
Abstract
The poled (1− x ) KNbO 3 – x LaNiO 3− δ ferroelectric semiconductors obtained an enhanced visible-light photocatalytic hydrogen evolution rate of 642.0 µmol g −1 h −1 , which is at least 16 times that of the unpoled sample (40.1 µmol g −1 h −1 ).
Topics & Concepts
Materials sciencePhotocatalysisPolingFerroelectricityHydrogen productionBand gapSemiconductorVisible spectrumOptoelectronicsHydrogenLanioChemistryDielectricCatalysisOrganic chemistryAdvanced Photocatalysis TechniquesPerovskite Materials and ApplicationsMultiferroics and related materials