居里温度
铁电性
居里
玛丽·居里
氢
催化作用
材料科学
纳米技术
化学工程
化学
凝聚态物理
光电子学
物理
有机化学
铁磁性
工程类
电介质
业务
经济政策
欧洲联盟
作者
Pham T.T. Phuong,Yan Zhang,Nick Gathercole,Hamideh Khanbareh,Hoang Duy Nguyen Phuc,Xuefan Zhou,Dou Zhang,Kechao Zhou,Steve Dunn,Chris Bowen
出处
期刊:iScience
[Elsevier]
日期:2020-05-01
卷期号:23 (5): 101095-101095
被引量:65
标识
DOI:10.1016/j.isci.2020.101095
摘要
Summary
Hydrogen can contribute significantly to the energy mix of the near future, as it is an attractive replacement for fossil fuels due to its high energy density and low greenhouse gas emission. A fascinating approach is to use the polarization change of a ferroelectric due to an applied stress or temperature change to achieve piezo- or pyro-catalysis for both H2 generation and wastewater treatment. We exploit low Curie temperature (Tc) ferroelectrics for polarization-driven electrochemical reactions, where the large changes in polarization and high activity of a ferroelectric near its Tc provides a novel avenue for such materials. We present experimental evidence for enhanced water splitting and rhodamine B degradation via piezo-catalysis by ultrasonic excitation at its Tc. Such work provides an effective strategy for water splitting/treatment systems that employ low Tc ferroelectrics under the action of mechanical stress or/and thermal fluctuations.
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