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- Title
Round‐the‐Clock Photocatalytic Hydrogen Production with High Efficiency by a Long‐Afterglow Material.
- Authors
Cui, Guanwei; Yang, Xiuli; Zhang, Yujia; Fan, Yaqi; Chen, Ping; Cui, Hongyu; Liu, Yan; Shi, Xifeng; Shang, Qiaoyan; Tang, Bo
- Abstract
Long afterglow materials can store and release light energy after illumination. A brick‐like, micrometer‐sized Sr2MgSi2O7:Eu2+,Dy3+ long‐afterglow material is used for hydrogen production by the photocatalytic reforming of methanol under round‐the‐clock conditions for the first time, achieving a solar‐to‐hydrogen (STH) conversion efficiency of 5.18 %. This material is one of the most efficient photocatalysts and provides the possibility of practical use on a large scale. Its remarkable photocatalytic activity is attributed to its unique carrier migration path and large number of lattice defects. These findings expand the application scope of long afterglow materials and provide a new strategy to design efficient photocatalysts by constructing trap levels that can prolong carrier lifetimes.
- Subjects
HYDROGEN production; LIGHT; PHOTOCATALYSTS; CRYSTAL defects; METHANOL
- Publication
Angewandte Chemie, 2019, Vol 131, Issue 5, p1354
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201810544