Phosphorene Co-catalyst Advancing Highly Efficient Visible-Light Photocatalytic Hydrogen Production,Angewandte Chemie International Edition

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Phosphorene Co-catalyst Advancing Highly Efficient Visible-Light Photocatalytic Hydrogen Production
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2017-07-19 07:51:11 , DOI: 10.1002/anie.201703827
Jingrun Ran ₁ , Bicheng Zhu ₂ , Shi-Zhang Qiao ₁

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Transitional metals are widely used as co-catalysts boosting photocatalytic H₂ production. However, metal-based co-catalysts suffer from high cost, limited abundance and detrimental environment impact. To date, metal-free co-catalyst is rarely reported. Here we for the first time utilized density functional calculations to guide the application of phosphorene as a high-efficiency metal-free co-catalyst for CdS, Zn_0.8Cd_0.2S or ZnS. Particularly, phosphorene modified CdS shows a high apparent quantum yield of 34.7 % at 420 nm. This outstanding activity arises from the strong electronic coupling between phosphorene and CdS, as well as the favorable band structure, high charge mobility and massive active sites of phosphorene, supported by computations and advanced characterizations, for example, synchrotron-based X-ray absorption near edge spectroscopy. This work brings new opportunities to prepare highly-active, cheap and green photocatalysts.

中文翻译：

磷助催化剂促进高效可见光光催化制氢

过渡金属被广泛用作促进光催化H ₂产生的助催化剂。然而，基于金属的助催化剂遭受高成本，有限的丰度和不利的环境影响的困扰。迄今为止，几乎没有关于无金属助催化剂的报道。在这里，我们首次使用密度泛函计算来指导磷光体作为CdS，Zn _0.8 Cd _0.2的高效无金属助催化剂的应用S或ZnS。尤其是，磷光体修饰的CdS在420 nm处表现出34.7％的高表观量子产率。这种出色的活性源于磷与CdS之间的强电子耦合，以及良好的能带结构，高电荷迁移率和磷的大量活性位点，并受到计算和高级表征（例如，基于同步加速器的X射线吸收）的支持边缘光谱学。这项工作为制备高活性，廉价和绿色的光催化剂带来了新的机会。

更新日期：2017-07-20

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