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Round‐the‐Clock Photocatalytic Hydrogen Production with High Efficiency by a Long‐Afterglow Material
Author(s) -
Cui Guanwei,
Yang Xiuli,
Zhang Yujia,
Fan Yaqi,
Chen Ping,
Cui Hongyu,
Liu Yan,
Shi Xifeng,
Shang Qiaoyan,
Tang Bo
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201810544
Subject(s) - afterglow , photocatalysis , hydrogen production , materials science , hydrogen , nanotechnology , chemistry , physics , catalysis , biochemistry , gamma ray burst , organic chemistry , astronomy
Abstract Long afterglow materials can store and release light energy after illumination. A brick‐like, micrometer‐sized Sr 2 MgSi 2 O 7 :Eu 2+ ,Dy 3+ 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.