Carbon-doped BN nanosheets for metal-free photoredox catalysis
Carbon-doped BN nanosheets for metal-free photoredox catalysis
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用于无金属光氧化还原催化的碳掺杂氮化硼纳米片
DOI：
10.1038/ncomms8698
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发表时间：
2015-07-01
影响因子：
16.6
通讯作者：
Wang, Xinchen
中科院分区：
文献类型：
--
作者：
Huang, Caijin;Chen, Cheng;Wang, Xinchen
利用光氧化还原催化，例如光诱导分解水和二氧化碳还原来制备可持续和稳定的太阳能转换半导体，是现代材料化学的关键挑战。在这里，我们介绍了一种简单的三元半导体氮化硼的合成，并表明它在可见光照射下可以催化水中析氢或析氧以及二氧化碳的还原。三元B-C-N合金的特点是在h-BN晶格中引入sp2碳的离域二维电子系统，其中带隙可以通过结合碳的量来调节以产生独特的功能。这种由轻质元素制成的可持续光催化剂有助于创新地构建光氧化还原级联，以利用太阳能进行化学转化。
The generation of sustainable and stable semiconductors for solar energy conversion by photoredox catalysis, for example, light-induced water splitting and carbon dioxide reduction, is a key challenge of modern materials chemistry. Here we present a simple synthesis of a ternary semiconductor, boron carbon nitride, and show that it can catalyse hydrogen or oxygen evolution from water as well as carbon dioxide reduction under visible light illumination. The ternary B–C–N alloy features a delocalized two-dimensional electron system withsp2carbon incorporated in theh-BN lattice where the bandgap can be adjusted by the amount of incorporated carbon to produce unique functions. Such sustainable photocatalysts made of lightweight elements facilitate the innovative construction of photoredox cascades to utilize solar energy for chemical conversion.