利用可见光激活油漆和涂料中TiO2纳米颗粒的抗病毒和抗菌特性:重点关注医院频繁接触表面的新发展

IF 2.3 4区 材料科学 Q2 Chemistry Journal of Coatings Technology and Research Pub Date : 2023-02-07 DOI:10.1007/s11998-022-00733-8
M. Schutte-Smith, E. Erasmus, R. Mogale, N. Marogoa, A. Jayiya, H. G. Visser
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引用次数: 4

摘要

2019冠状病毒病大流行使全世界的科学家重新聚焦于开发能够在未来防止此类疾病传播的技术。医院等卫生设施的消毒、卫生间、火车站等公共场所的消毒、食品行业清洁场所的消毒是值得关注的领域。在大多数情况下,微生物和病毒可以附着在表面并在表面上存活很长时间,从而增加了感染的风险。最吸引人的消毒方法之一是含有纳米粒子的油漆和涂料,它们可以作为光催化剂。其中,二氧化钛因其低成本和光反应性而具有吸引力。然而,就其本身而言,由于光生物种的高带隙和快速重组,它只能在高能紫外光下被激活。理想的材料或涂层应该在人造光条件下激活,以影响室内区域,特别是考虑到墙壁油漆或经常接触的区域,如门把手和电梯按钮。通过在TiO2 NPs中引入掺杂剂,可以将带隙降低到可见光光催化发生的状态。自然,许多研究人员现在正在探索这一特性。本文综述了tio2掺杂纳米粒子在涂料和油漆中可见光活化的最新研究进展。还简要讨论了防治空气污染和个人防护装备方面的进展。在可见光下,活性氧(ROS)在涂料中的二氧化钛纳米颗粒上进行光催化活化,以杀死细菌和涂层在医疗和食品工业中经常接触的表面。
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Using visible light to activate antiviral and antimicrobial properties of TiO2 nanoparticles in paints and coatings: focus on new developments for frequent-touch surfaces in hospitals

The COVID-19 pandemic refocused scientists the world over to produce technologies that will be able to prevent the spread of such diseases in the future. One area that deservedly receives much attention is the disinfection of health facilities like hospitals, public areas like bathrooms and train stations, and cleaning areas in the food industry. Microorganisms and viruses can attach to and survive on surfaces for a long time in most cases, increasing the risk for infection. One of the most attractive disinfection methods is paints and coatings containing nanoparticles that act as photocatalysts. Of these, titanium dioxide is appealing due to its low cost and photoreactivity. However, on its own, it can only be activated under high-energy UV light due to the high band gap and fast recombination of photogenerated species. The ideal material or coating should be activated under artificial light conditions to impact indoor areas, especially considering wall paints or frequent-touch areas like door handles and elevator buttons. By introducing dopants to TiO2 NPs, the bandgap can be lowered to a state of visible-light photocatalysis occurring. Naturally, many researchers are exploring this property now. This review article highlights the most recent advancements and research on visible-light activation of TiO2-doped NPs in coatings and paints. The progress in fighting air pollution and personal protective equipment is also briefly discussed.

Graphical Abstract

Indoor visible-light photocatalytic activation of reactive oxygen species (ROS) over TiO2 nanoparticles in paint to kill bacteria and coat frequently touched surfaces in the medical and food industries.

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来源期刊
Journal of Coatings Technology and Research
Journal of Coatings Technology and Research CHEMISTRY, APPLIED-MATERIALS SCIENCE, COATINGS & FILMS
CiteScore
4.40
自引率
8.70%
发文量
0
期刊介绍: Journal of Coatings Technology and Research (JCTR) is a forum for the exchange of research, experience, knowledge and ideas among those with a professional interest in the science, technology and manufacture of functional, protective and decorative coatings including paints, inks and related coatings and their raw materials, and similar topics.
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