Theoretical investigation on the photocatalytic activity of the Au/g-C3N4 monolayer

Theoretical investigation on the photocatalytic activity of the Au/g-C3N4 monolayer
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Au/g-C3N4单层光催化活性的理论研究

DOI:
10.1142/s0219633617500134
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发表时间:
2017-04
影响因子:
2.4
通讯作者:
Zhu C
Zhu C
中科院分区:
化学4区
文献类型:
--
作者:
Nie Guoyan;Li Peng;Liang Jin-Xia;Zhu C

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二维光催化材料具有广阔的应用前景。在这里,一个新的二维材料的石墨碳氮化物(g-C3 N4)单层上的单原子Au的支持组成已被设计和其电子和光学性质的特征在于通过密度泛函计算。杂化泛函HSE 06计算的禁带宽度为1.82eV,表明Au/g-C3 N4是间接半导体,电子很容易从单原子Au激发到导带底部。因此,这种材料在可见光区具有相对较强的光学性质。此外,Au插入g-C3 N4单层的空腔的过程是能量有利的。该研究为制备高稳定性的负载型Au催化剂提供了新的思路和途径。
Two-dimensional optical catalysis materials have a wonderful potential application. Here, a new two-dimensional material consisting of the supported single-atom Au on a graphite carbon nitride (g-C3N4) single layer has been designed and its electronic and optical properties have been characterized by density functional calculations. The bandgap of 1.82eV calculated by the hybrid functional HSE06 shows that the Au/g-C3N4 is an indirect semiconductor, and the electron can easily be excited from the single-atom Au to the bottom of the conduction band. This material therefore has relatively strong optical properties in the visible region. Moreover, the process of Au insertion into the cavity of g-C3N4 single layer is energy-favorable. This work may provide insights and a new avenue for fabricating supported Au catalysts with high stability.
DOI: 10.1039/c3cp54333a
发表时间: 2014-01
期刊: Physical chemistry chemical physics : PCCP
影响因子: --
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