期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 238, 期 -, 页码 664-671出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2018.07.056
关键词
Photocatalysis; Polymeric carbon nitride; Water oxidation; Cobalt cubane; Molecular co-catalyst
资金
- National Key Technologies R&D Program of China [2018YFA0209301]
- National Natural Science Foundation of China [21425309, 21761132002, 21861130353]
- 111 Project
In artificial photocatalysis, sluggish kinetics of hole transfer and the high recombination rate of charge have been the Achilles' heel of photocatalytic conversion efficiency. The development of co-catalysts for promoting exciton splitting and charge separation has therefore gained continuous attention. Herein, Co4O4 cubane complex Co4O4(O2CMe)(4)(PY)(4) (1a, py = pyridine derivatives), serves as a homogeneous molecular co-catalyst which is engineered into the framework of pristine polymeric carbon nitride (PCN) for water oxidation with light illumination. This modification strategy maximizes the contact areas between co-catalysts and reactants, reduces the over-potential of oxygen producing and accelerates the interface transfer rate of electron-hole pairs, thus leading to enhanced reaction kinetics for photocatalytic water oxidation. Compared with pristine PCN, the photocatalytic O-2 production rate up to 19-fold-enhanced in the presence of molecular co-catalyst. This work emphasizes the importance of developing effective, stable and earth-abundant molecular co-catalysts for the promotion of water-splitting photocatalysis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据