{"title":"Ceramic Fiber Paper-Based Manganese Oxides Catalyst for Room Temperature Formaldehyde Oxidation","authors":"Xiuxiu Wang, Jiawei Zhao, Chuanjun Zhao, Yexin Zhang, Sakil Mahmud, Jian Zhang","doi":"10.1007/s10562-024-04898-2","DOIUrl":null,"url":null,"abstract":"<div><p>The catalytic removal of trace formaldehyde (HCHO) at ambient temperatures is crucial for improving indoor air quality, necessitating the use of monolithic catalysts over traditional powder forms for real-world applications. In this study, an aluminosilicate fiber-woven ceramic filter paper (CFP) was selected as the substrate, onto which a Mn<sub>2</sub>O<sub>3</sub> catalyst was in situ coated via a combustion method utilizing Mn(NO<sub>3</sub>)<sub>2</sub> as the oxidant and glycine as the fuel. The resulting monolithic Mn<sub>2</sub>O<sub>3</sub>/CFP catalyst was compared to a MnO<sub>2</sub>/CFP catalyst, prepared by direct decomposition of Mn(NO<sub>3</sub>)<sub>2</sub> on the same substrate. The Mn<sub>2</sub>O<sub>3</sub>/CFP catalyst exhibited superior characteristics for HCHO oxidation, including a more porous architecture, higher redox capability, and an abundance of surface-active oxygen species with enhanced mobility of surface lattice oxygen. These features enabled the Mn<sub>2</sub>O<sub>3</sub>/CFP catalyst to achieve significantly higher HCHO conversion at room temperature (90%) compared to the MnO<sub>2</sub>/CFP catalyst (21%). Additionally, in a durability test carried out in a mode of dynamic flow at room temperature, the Mn<sub>2</sub>O<sub>3</sub>/CFP catalyst maintained a high HCHO conversion rate of 66% over 11 days, demonstrating its potential for practical indoor air purification applications.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 2","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Letters","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10562-024-04898-2","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The catalytic removal of trace formaldehyde (HCHO) at ambient temperatures is crucial for improving indoor air quality, necessitating the use of monolithic catalysts over traditional powder forms for real-world applications. In this study, an aluminosilicate fiber-woven ceramic filter paper (CFP) was selected as the substrate, onto which a Mn2O3 catalyst was in situ coated via a combustion method utilizing Mn(NO3)2 as the oxidant and glycine as the fuel. The resulting monolithic Mn2O3/CFP catalyst was compared to a MnO2/CFP catalyst, prepared by direct decomposition of Mn(NO3)2 on the same substrate. The Mn2O3/CFP catalyst exhibited superior characteristics for HCHO oxidation, including a more porous architecture, higher redox capability, and an abundance of surface-active oxygen species with enhanced mobility of surface lattice oxygen. These features enabled the Mn2O3/CFP catalyst to achieve significantly higher HCHO conversion at room temperature (90%) compared to the MnO2/CFP catalyst (21%). Additionally, in a durability test carried out in a mode of dynamic flow at room temperature, the Mn2O3/CFP catalyst maintained a high HCHO conversion rate of 66% over 11 days, demonstrating its potential for practical indoor air purification applications.
期刊介绍：
Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.
The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.
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