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Synthesis of ZnO doped high valence S element and study of photogenerated charges properties

机译：ZnO掺杂高价质的合成及光源电荷性能研究

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Nonmetal doping is an efficient way to increase the photoresponse range of ZnO. However, the mechanism for improving the light response range of ZnO with nonmetal doping is not clear. Herein, ZnO doped with S was successfully prepared by ion exchange and calcination methods, which resulted in the uniform distribution of sulfur ions in ZnO. The S element doped was mainly S ~(4+) and S ~(6+) , which was identified by XPS. We studied the influence of S on the photogenerated charge characteristics of ZnO with SPS. Results indicated that the uniform distribution of S dopants elevated the valence band maximum by mixing S 3p with the upper valence band states of ZnO. The valence band maxima of S–ZnO was 0.37 eV higher than that of ZnO. This result was the main reason for the improvement in the light response. We also studied the photocatalytic activity of Ag/S–ZnO. Ag/S–ZnO with 10 wt% Ag loading showed the highest photocatalytic degradation rate for MO. In this paper, a potential photocatalytic mechanism has been proposed.
机译：非金属掺杂是增加ZnO光响应范围的有效方法。然而，用非金属掺杂改善ZnO光响应范围的机制尚不清楚。在此，通过离子交换和煅烧方法成功地制备了ZnO掺杂的ZnO中的硫离子均匀分布。掺杂的S元素主要是S〜（4+）和S〜（6+），其通过XPS鉴定。我们研究了S对具有SPS ZnO光静电充电特性的影响。结果表明，S掺杂剂的均匀分布通过将S 3P与ZnO的上价带状态混合而升高了价带。 S-ZnO的价带最大值比ZnO高0.37eV。该结果是光反应改善的主要原因。我们还研究了AG / S-ZnO的光催化活性。具有10wt％Ag载荷的Ag / S-ZnO显示了Mo的最高光催化降解速率。本文提出了一种潜在的光催化机制。

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