A full-sunlight-driven photocatalyst with super long-persistent energy storage ability.
A major drawback of traditional photocatalysts like TiO2 is that they can only work under illumination, and the light has to be UV. As a solution for this limitation, visible-light-driven energy storage photocatalysts have been developed in recent years. However, energy storage photocatalysts that are full-sunlight-driven (UV-visible-NIR) and possess long-lasting energy storage ability are lacking. Here we report, a Pt-loaded and hydrogen-treated WO3 that exhibits a strong absorption at full-sunlight spectrum (300-1,000 nm), and with a super-long energy storage time of more than 300 h to have formaldehyde degraded in dark. In this new material system, the hydrogen treated WO3 functions as the light harvesting material and energy storage material simultaneously, while Pt mainly acts as the cocatalyst to have the energy storage effect displayed. The extraordinary full-spectrum absorption effect and long persistent energy storage ability make the material a potential solar-energy storage and an effective photocatalyst in practice.
State Key Laboratory of Material Processing and Die & Mould Technology, Nanomaterials and Smart Sensors Laboratory, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, PR China.
Jie
J
Li
Yuan
Y
Liu
Zhijian
Z
Zhu
Guozhu
G
Zhang
Tao
T
Zou
Zhijun
Z
Zou
Shunping
S
Zhang
Dawen
D
Zeng
Changsheng
C
Xie
D002384:Catalysis; D011211:Electric Power Supplies; D004735:Energy Transfer / Q000528:radiation effects*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006859:Hydrogen / Q000737:chemistry*; D008422:Materials Testing; D010087:Oxides / Q000737:chemistry* / Q000528:radiation effects; D010984:Platinum / Q000737:chemistry* / Q000528:radiation effects*; D013472:Sunlight; D014414:Tungsten / Q000737:chemistry* / Q000528:radiation effects
D010087:Oxides; D010984:Platinum; D006859:Hydrogen; C511604:tungsten oxide; D014414:Tungsten