碳纤维添加量对MnO2/PET室温甲醛分解性能的影响

IF 11.3 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials Pub Date : 2025-08-07 DOI:10.1016/j.jhazmat.2025.139489

Yongshuai Qu, Shan Wang, Pengyi Zhang, Yunjing Wang

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引用次数: 0

摘要

由于团聚效应，浆料中二氧化锰颗粒的活性位点很容易被覆盖。我们在浆料中加入碳纤维，可以很好地分散MnO2颗粒，暴露出更多的活性位点。随后，我们将含有MnO2和碳纤维的浆料通过滚压法加载到聚对苯二甲酸乙二醇酯（PET）基无纺布（MnO2/PET-%C）上。碳纤维的加入显著提高了MnO2在织物上的负载牢固性，而压降不受影响。在超声振荡180分钟后，MnO2和碳纤维合成的复合材料的失重率达到3.1%。常温下120 min内HCHO去除率达99.5%，CO2转化率达50%，放置5天后可再生。超声振荡后，未添加碳纤维的复合材料的HCHO转化率显著降低，而添加碳纤维的复合材料由于具有较强的MnO2载荷牢固性，其HCHO转化率有所提高。本研究阐明了碳纤维在改善MnO2在织物上的分散性和负载牢固性方面的关键作用，从而在室温下有效氧化HCHO。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Effect of carbon fiber addition on the performance of MnO2/PET for formaldehyde decomposition at room temperature

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Effect of carbon fiber addition on the performance of MnO2/PET for formaldehyde decomposition at room temperature

The active sites of MnO₂ particles in the slurry is easily covered due to the agglomeration effect. Herein, we added carbon fiber to the slurry, which could disperse MnO₂ particles well and expose more active sites. Subsequently, we loaded the slurry containing MnO₂ and carbon fiber onto the polyethylene terephthalate (PET)-based non-woven fabric (MnO₂/PET-%C) by rolling method. The addition of carbon fiber significantly improved the load firmness of MnO₂ on the fabric, while the pressure drop remained unaffected. As-synthesized composites incorporating MnO₂ and carbon fibers achieved a low weight loss of <3.1% after 180 min of ultrasonic oscillation. It possessed fantastic HCHO removal rate (>99.5%) and conversion to CO₂ (50%) within 120 min at room temperature, and could be easily regenerated being placed for 5 days. Moreover, after ultrasonic oscillation, the HCHO conversion rate of composites without carbon fiber addition exhibited a significant decrease, whereas that of composites with carbon fiber demonstrated an improvement due to their strong load firmness of MnO₂. This research elucidates the pivotal role of carbon fibers in improving the dispersion and loading firmness of MnO₂ on fabrics, resulting in efficient oxidation of HCHO at room temperature.

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来源期刊

Journal of Hazardous Materials 工程技术-工程：环境

CiteScore

25.40

自引率

5.90%

发文量

3059

审稿时长

58 days

期刊介绍： The Journal of Hazardous Materials serves as a global platform for promoting cutting-edge research in the field of Environmental Science and Engineering. Our publication features a wide range of articles, including full-length research papers, review articles, and perspectives, with the aim of enhancing our understanding of the dangers and risks associated with various materials concerning public health and the environment. It is important to note that the term "environmental contaminants" refers specifically to substances that pose hazardous effects through contamination, while excluding those that do not have such impacts on the environment or human health. Moreover, we emphasize the distinction between wastes and hazardous materials in order to provide further clarity on the scope of the journal. We have a keen interest in exploring specific compounds and microbial agents that have adverse effects on the environment.