The solution-phase process of a g-C3N4/BiVO4 dyad to a large-area photoanode: interfacial synergy for highly efficient water oxidation,Chemical Communications

当前位置： X-MOL 学术 › Chem. Commun. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

The solution-phase process of a g-C3N4/BiVO4 dyad to a large-area photoanode: interfacial synergy for highly efficient water oxidation
Chemical Communications ( IF 4.3 ) Pub Date : 2017-08-30 00:00:00 , DOI: 10.1039/c7cc05444k
Bing Zhang _{1,

2,

3,

4} , Shu-Yu Zhao _{1,

2,

3,

4} , Hong-Hui Wang _{1,

2,

3,

4} , Tian-Jian Zhao _{1,

2,

3,

4} , Yong-Xing Liu _{1,

2,

3,

4} , Li-Bing Lv _{1,

2,

3,

4} , Xiao Wei _{1,

2,

3,

4} , Xin-Hao Li _{1,

2,

3,

4} , Jie-Sheng Chen _{1,

2,

3,

4}

Affiliation

The oxygen evolution reaction (OER) is the rate-limiting process for water splitting, and highly efficient large-area OER photoanodes have been considered as an essential part in photoelectrochemical water splitting reactors. The high hole–electron separation efficiency of photoanodes is highly required for real applications of photoanodes in sufficiently harvesting solar energy. Herein we show that the inactive g-C₃N₄ nanolayers can be self-assembled with BiVO₄ into a highly coupled BV/CN dyad to significantly enhance the charge separation efficiency of BiVO₄ photoelectrodes for the OER. The incident photon-to-current conversion efficiency (IPCE) of visible light (400 nm) provided by the scalable BV/CN-5 photoanode was estimated to be 50% at 1.23 V vs. RHE in 0.5 M Na₂SO₄ solution and significantly increased to 97% at a bias voltage of 1.6 V vs. RHE.

中文翻译：

gC ₃ N ₄ / BiVO ₄ dyad到大面积光阳极的固溶过程：界面协同作用，实现高效水氧化

氧气析出反应（OER）是水分解的限速过程，高效的大面积OER光电阳极已被认为是光电化学水分解反应器中必不可少的部分。光电阳极在充分收集太阳能方面的实际应用对光电阳极的高空穴-电子分离效率提出了很高的要求。本文中，我们显示了无活性的gC ₃ N ₄纳米层可以与BiVO ₄自组装成高度偶联的BV / CN二聚体，从而显着提高BiVO ₄的电荷分离效率OER的光电极。在0.5M Na ₂ SO ₄溶液中，可缩放BV / CN-5光阳极提供的可见光（400 nm）的入射光子-电流转换效率（IPCE）在1.23 V相对于RHE的情况下估计为50％。与RHE相比，偏置电压为1.6 V时，电压显着增加至97％。

更新日期：2017-09-21

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11