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Antiviral Effect of Visible Light-Sensitive Cu x O/TiO 2 Photocatalyst

机译：可见光敏感Cu x O / TiO 2光催化剂的抗病毒作用

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Photocatalysis is an effective technology for preventing the spread of pandemic-scale viruses. This review paper presents an overview of the recent progress in the development of an efficient visible light-sensitive photocatalyst, i.e., a copper oxide nanoclusters grafted titanium dioxide (Cu x O/TiO 2 ). The antiviral Cu x O/TiO 2 photocatalyst is functionalised by a different mechanism in addition to the photocatalytic oxidation process. The Cu x O nanocluster consists of the valence states of Cu(I) and Cu(II); herein, the Cu(I) species denaturalizes the protein of the virus, thereby resulting in significant antiviral properties even under dark conditions. Moreover, the Cu(II) species in the Cu x O nanocluster serves as an electron acceptor through photo-induced interfacial charge transfer, which leads to the formation of an anti-virus Cu(I) species and holes with strong oxidation power in the valence band of TiO 2 under visible-light irradiation. The antiviral function of the Cu x O/TiO 2 photocatalyst is maintained under indoor conditions, where light illumination is enabled during the day but not during the night; this is because the remaining active Cu(I) species works under dark conditions. The Cu x O/TiO 2 photocatalyst can thus be used to reduce the risk of virus infection by acting as an antiviral coating material.
机译：光催化是防止流行病病毒传播的有效技术。本综述论文概述了最近在开发高效可见光敏光催化剂的进展情况，即氧化铜纳米能器接枝二氧化钛（Cu x O / TiO 2）。除了光催化氧化过程之外，抗病毒Cu x O / TiO 2光催化剂通过不同的机制官能化。 Cu x O纳米簇由Cu（I）和Cu（II）的价态组成;在此，Cu（I）物种使病毒的蛋白质变性，从而使得即使在暗条件下也导致显着的抗病毒性质。此外，Cu X O纳米簇中的Cu（II）物种通过光诱导的界面电荷转移用作电子受体，这导致形成具有强氧化能力的抗病毒Cu（I）物种和孔可见光辐照下TiO 2的价带。 Cu x O / TiO 2光催化剂的抗病毒功能在室内条件下维持，其中在白天启用了轻度照明，但在夜间而不是;这是因为剩余的活性Cu（i）物种在黑暗条件下工作。因此，Cu x O / TiO 2光催化剂可以通过用作抗病毒涂料来降低病毒感染的风险。

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