Haiyu Wang , Linghui Peng , Guiying Li , Hongli Liu , Zhishu Liang , Huijun Zhao , Taicheng An
{"title":"具有丰富氧空位和大气浓度 O3 的 MnO2/Ni 泡沫增强了催化臭氧灭活生物气溶胶的能力","authors":"Haiyu Wang , Linghui Peng , Guiying Li , Hongli Liu , Zhishu Liang , Huijun Zhao , Taicheng An","doi":"10.1016/j.apcatb.2023.123675","DOIUrl":null,"url":null,"abstract":"<div><p><span>Catalytic ozonation<span> is a promising bioaerosol control technology, as O</span></span><sub>3</sub> is prevalent in atmosphere. However, O<sub>3</sub><span> at atmosphere concentration has limited oxidation potential and reactive oxygen species (ROSs) production, leading incomplete bioaerosol inactivation. Therefore, a catalytic ozonation system with a manganese dioxide/Ni foam (MN) was prepared for efficient bioaerosol inactivation. The MN exhibited superior activity in catalytic ozonation bioaerosol inactivation, achieving 91.6% inactivation efficiency within 8.07 s at atmospheric concentration (0.1 ppm) of O</span><sub>3</sub>. The inactivation efficiency can be further improved to 99.0% by regulating surface oxygen vacancies (O<sub>V</sub>) in MN, which is mainly attributed to abundant O<sub>V</sub> of MN that facilitate rapid conversion of O<sub>3</sub> to other ROSs. Meanwhile, the mechanism of rapid bacterial inactivation was also clarified at cellular level, showing that ROSs caused bacterial oxidative stress. This catalytic ozonation strategy would offer more choices to design efficient O<sub>3</sub> catalysts for bioaerosol control and public health protection.</p></div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"344 ","pages":"Article 123675"},"PeriodicalIF":20.2000,"publicationDate":"2023-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced catalytic ozonation inactivation of bioaerosols by MnO2/Ni foam with abundant oxygen vacancies and O3 at atmospheric concentration\",\"authors\":\"Haiyu Wang , Linghui Peng , Guiying Li , Hongli Liu , Zhishu Liang , Huijun Zhao , Taicheng An\",\"doi\":\"10.1016/j.apcatb.2023.123675\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p><span>Catalytic ozonation<span> is a promising bioaerosol control technology, as O</span></span><sub>3</sub> is prevalent in atmosphere. However, O<sub>3</sub><span> at atmosphere concentration has limited oxidation potential and reactive oxygen species (ROSs) production, leading incomplete bioaerosol inactivation. Therefore, a catalytic ozonation system with a manganese dioxide/Ni foam (MN) was prepared for efficient bioaerosol inactivation. The MN exhibited superior activity in catalytic ozonation bioaerosol inactivation, achieving 91.6% inactivation efficiency within 8.07 s at atmospheric concentration (0.1 ppm) of O</span><sub>3</sub>. The inactivation efficiency can be further improved to 99.0% by regulating surface oxygen vacancies (O<sub>V</sub>) in MN, which is mainly attributed to abundant O<sub>V</sub> of MN that facilitate rapid conversion of O<sub>3</sub> to other ROSs. Meanwhile, the mechanism of rapid bacterial inactivation was also clarified at cellular level, showing that ROSs caused bacterial oxidative stress. This catalytic ozonation strategy would offer more choices to design efficient O<sub>3</sub> catalysts for bioaerosol control and public health protection.</p></div>\",\"PeriodicalId\":244,\"journal\":{\"name\":\"Applied Catalysis B: Environmental\",\"volume\":\"344 \",\"pages\":\"Article 123675\"},\"PeriodicalIF\":20.2000,\"publicationDate\":\"2023-12-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Catalysis B: Environmental\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0926337323013188\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Catalysis B: Environmental","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0926337323013188","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Enhanced catalytic ozonation inactivation of bioaerosols by MnO2/Ni foam with abundant oxygen vacancies and O3 at atmospheric concentration
Catalytic ozonation is a promising bioaerosol control technology, as O3 is prevalent in atmosphere. However, O3 at atmosphere concentration has limited oxidation potential and reactive oxygen species (ROSs) production, leading incomplete bioaerosol inactivation. Therefore, a catalytic ozonation system with a manganese dioxide/Ni foam (MN) was prepared for efficient bioaerosol inactivation. The MN exhibited superior activity in catalytic ozonation bioaerosol inactivation, achieving 91.6% inactivation efficiency within 8.07 s at atmospheric concentration (0.1 ppm) of O3. The inactivation efficiency can be further improved to 99.0% by regulating surface oxygen vacancies (OV) in MN, which is mainly attributed to abundant OV of MN that facilitate rapid conversion of O3 to other ROSs. Meanwhile, the mechanism of rapid bacterial inactivation was also clarified at cellular level, showing that ROSs caused bacterial oxidative stress. This catalytic ozonation strategy would offer more choices to design efficient O3 catalysts for bioaerosol control and public health protection.
期刊介绍：
Applied Catalysis B: Environment and Energy (formerly Applied Catalysis B: Environmental) is a journal that focuses on the transition towards cleaner and more sustainable energy sources. The journal's publications cover a wide range of topics, including:
1.Catalytic elimination of environmental pollutants such as nitrogen oxides, carbon monoxide, sulfur compounds, chlorinated and other organic compounds, and soot emitted from stationary or mobile sources.
2.Basic understanding of catalysts used in environmental pollution abatement, particularly in industrial processes.
3.All aspects of preparation, characterization, activation, deactivation, and regeneration of novel and commercially applicable environmental catalysts.
4.New catalytic routes and processes for the production of clean energy, such as hydrogen generation via catalytic fuel processing, and new catalysts and electrocatalysts for fuel cells.
5.Catalytic reactions that convert wastes into useful products.
6.Clean manufacturing techniques that replace toxic chemicals with environmentally friendly catalysts.
7.Scientific aspects of photocatalytic processes and a basic understanding of photocatalysts as applied to environmental problems.
8.New catalytic combustion technologies and catalysts.
9.New catalytic non-enzymatic transformations of biomass components.
The journal is abstracted and indexed in API Abstracts, Research Alert, Chemical Abstracts, Web of Science, Theoretical Chemical Engineering Abstracts, Engineering, Technology & Applied Sciences, and others.
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