N- and Mo-doping Bi2WO6 in photocatalytic water splitting

N- and Mo-doping Bi2WO6 in photocatalytic water splitting
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N 和 Mo 掺杂 Bi2WO6 在光催化水分解中的应用

DOI:
10.1016/j.commatsci.2012.08.024
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发表时间:
2013-02
影响因子:
3.3
通讯作者:
Huang, Baibiao
Huang, Baibiao
中科院分区:
材料科学3区
文献类型:
--
作者:
Zhu, Yingtao;Lu, Jibao;Dai, Ying;Huang, Baibiao

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为了解Bi 2 WO 6光催化分解水的活性,采用第一性原理计算方法研究了N、Mo单掺杂和N/Mo共掺杂Bi 2 WO 6的电子结构.结果表明,N/Mo共掺杂Bi 2 WO 6的禁带宽度减小了0.19eV,水分解氧化过程所需的驱动力也减小了。计算的缺陷对结合能表明,N/Mo共掺杂Bi 2 WO 6比单掺杂更可行,表明N/Mo共掺杂Bi 2 WO 6是一种潜在的光催化分解水的候选材料。
To understand the photocatalytic activity of Bi2WO6for water splitting, the electronic structures of N- and Mo-monodoped and N/Mo-codoped Bi2WO6are investigated based on first-principles calculations. Our results indicate that the band gap of N/Mo-codoped Bi2WO6reduces by 0.19eV and the smaller driving force is required for the water-splitting oxidation process. The calculated binding energy of the defect pairs shows that N/Mo-codoping in Bi2WO6is more feasible than mono-doping, indicating N/Mo-codoped Bi2WO6is a potential candidate for the photocatalytic water splitting.
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