杰纳斯
光催化
氧化还原
氮化碳
催化作用
材料科学
分解水
纳米技术
纳米结构
氮化物
碳纤维
半导体
表面改性
纳米颗粒
化学工程
表面电荷
光化学
化学
光电子学
物理化学
有机化学
复合材料
冶金
工程类
复合数
图层(电子)
作者
Dandan Zheng,Xu-Ning Cao,Xinchen Wang
标识
DOI:10.1002/anie.201606102
摘要
Abstract The precise modification of redox species on the inner and outer surfaces of hollow nanostructures is relevant in catalysis, surface science, and nanotechnology, but has proven difficult to achieve. Herein, we develop a facile approach to specifically fabricate Pt and Co 3 O 4 nanoparticles (NPs) onto the interior and exterior surface of hollow carbon nitride spheres (HCNS), respectively, to promote the surface redox functions of the polymer semiconductors. The photocatalytic water splitting activities of HCNS with spatially separated oxidation and reduction centers at their nanodomains were enhanced. The origin of the enhanced activity was attributed to the spatially separated reactive sites for the evolution of H 2 and O 2 and also to the unidirectional migration of the electron and hole on the Janus surfaces, thereby preventing the unwanted reverse reaction of water splitting and decreasing charge recombination.
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