Topological carbon nitride: localized photon absorption and delocalized charge carrier separation at intertwined photocatalyst interfaces†,Materials Horizons

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Topological carbon nitride: localized photon absorption and delocalized charge carrier separation at intertwined photocatalyst interfaces†
Materials Horizons ( IF 12.2 ) Pub Date : 2018-03-21 00:00:00 , DOI: 10.1039/c7mh01111c
M. Z. Rahman _{1,

2,

3,

4,

5} , J. Moffatt _{6,

7,

8} , N. Spooner _{6,

7,

8}

Affiliation

We here introduce, for the first time, a topological carbon nitride (TCN) with built-in crystalline–amorphous phases. Topologically anchored dual complementary phases allow localized photon absorption of different wavelengths, and provide a twinned photocatalyst interface to facilitate geminate charge carrier pair separation. These unique attributes, which are absent in widely used graphitic carbon nitride (GCN) and amorphous carbon nitride (ACN) photocatalysts, are highly desirable for precious metal (i.e. Pt) cocatalyst-free hydrogen production via water-splitting. Our results are substantiated with both experiments and simulations.

中文翻译：

拓扑碳氮化物：缠结的光催化剂界面处的局部光子吸收和局部电荷载流子分离†

我们在此首次引入具有内置晶体-非晶相的拓扑碳氮化物（TCN）。拓扑锚定的双互补相可实现不同波长的局部光子吸收，并提供孪生的光催化剂界面，以促进成对的电荷载流子对分离。这些独特的属性在广泛使用的石墨碳氮化物（GCN）和无定形碳氮化物（ACN）光催化剂中是不存在的，对于通过水分解生产无贵金属（即Pt）助催化剂的氢气非常需要。实验和模拟均证实了我们的结果。

更新日期：2018-03-21

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