Round-the-Clock Photocatalytic Hydrogen Production with High Efficiency by a Long-Afterglow Material

被引:100
作者
Cui, Guanwei [1 ]
Yang, Xiuli [1 ]
Zhang, Yujia [1 ]
Fan, Yaqi [1 ]
Chen, Ping [1 ]
Cui, Hongyu [1 ]
Liu, Yan [1 ]
Shi, Xifeng [1 ]
Shang, Qiaoyan [1 ]
Tang, Bo [1 ]
机构
[1] Shandong Normal Univ, Shandong Prov Key Lab Clean Prod Fine Chem, Minist Educ,Coll Chem Chem Engn & Mat Sci, Key Lab Mol & Nano Probes,Collaborat Innovat Ctr, Jinan 250014, Shandong, Peoples R China
基金
中国国家自然科学基金;
关键词
hydrogen production; long afterglow; methanol; photocatalysis; water; PERSISTENT LUMINESCENCE; OXYGEN VACANCIES; WATER; PHOSPHOR; EU2+; SR2MGSI2O7-EU2+; ENHANCEMENT; FABRICATION; DEFECTS; SHEETS;
D O I
10.1002/anie.201810544
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
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.
引用
收藏
页码:1340 / 1344
页数:5
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