Harvesting vibration energy to piezo-catalytically generate hydrogen through Bi2WO6 layered-perovskite

被引：147

作者：

Xu, Xiaoli ^{[1
,2
]}

Xiao, Lingbo ^{[2
]}

Wu, Zheng ^{[3
,4
]}

Jia, Yanmin ^{[1
]}

Ye, Xiang ^{[5
]}

Wang, Feifei ^{[5
]}

Yuan, Biao ^{[6
]}

Yu, Yi ^{[6
]}

Huang, Haitao ^{[7
]}

Zou, Guifu ^{[2
]}

机构：

[1] Xian Univ Posts Telecommun, Sch Sci, Xian 710121, Peoples R China

[2] Soochow Univ, Soochow Inst Energy & Mat Innovat, Coll Energy, Key Lab Adv Carbon Mat & Wearable Energy Technol, Suzhou 215006, Peoples R China

[3] Xian Polytech Univ, Xian Key Lab Text Chem Engn Auxiliaries, Sch Environm & Chem Engn, Xian 710000, PR, Peoples R China

[4] Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Ctr Adv Mat Technol CAMT, Sydney, NSW 2006, Australia

[5] Shanghai Normal Univ, Dept Phys, Key Lab Optoelect Mat & Device, Shanghai 200234, Peoples R China

[6] ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China

[7] Hong Kong Polytech Univ, Dept Appl Phys, Hong Kong, Peoples R China

来源：

NANO ENERGY | 2020年 / 78卷 / 78期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

Piezo-catalysis; Hydrogen generation; Piezoelectric effect; Layered-perovskite; Bismuth tungstate nanoplate;

D O I：

10.1016/j.nanoen.2020.105351

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Vibration energy sources are nearly ubiquitous in our daily life, for instance, walking, automobile engine, heartbeat, noise, etc., occurring almost whenever and wherever possible. It would be an interesting and exciting breakthrough in the field of energy, if all these energies could be gathered and utilized. Piezoelectric materials make it possible, which can convert vibration energy into electric energy by inducing positive and negative electric charges. Up to now, there has rarely reported on hydrogen generation by piezoelectric materials utilizing vibration energy. Here, an efficient piezo-catalytic hydrogen generation in the layered-perovskite bismuth tungstate (Bi2WO6) nanoplates is carried out through harvesting vibration energy. The yield of hydrogen can achieve 1147.8 mu mol g(-1) after 6 h vibration with the rate of hydrogen generation of 191.3 mu mol g(-1) h(-1). The conduction band level of H+/H-2 is more positive than the minimum of conduction band of Bi2WO6 nanoplates, enabling the reduction of water to generate hydrogen. Converting vibration energy into useful clean hydrogen energy can not only make use of waste energy, but also be expected to solve the problem of energy shortage, which is potential in developing the clean hydrogen energy in future.

引用

页数：9