Bioderived carbon aerogels loaded with g-C3N4 and their high Efficacy removing volatile organic compounds (VOCs).

IF 9.4 1区 化学 Q1 CHEMISTRY, PHYSICAL Journal of Colloid and Interface Science Pub Date : 2025-01-15 Epub Date: 2024-09-21 DOI:10.1016/j.jcis.2024.09.167
Can Cheng, Hongyue Jing, Hongtian Ji, Yunpeng Li, Liying Ma, Jingcheng Hao
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Abstract

Indoor air pollution, predominantly caused by volatile organic compounds (VOCs), poses significant health hazards when concentrations surpass critical thresholds. Using waste corn straw as carbon source and urea as nitrogen source, straw derived carbon aerogel (CAGH) loaded with g-C3N4H2O-N2-450-3 h was successfully prepared by hydrothermal and water-assisted calcination. Following water-assisted regulation, g-C3N4H2O-N2-450-3 h on CAGH exhibited a mixed structure comprising honeycomb and two-dimensional filaments, while the growth of g-C3N4H2O-N2-450-3 h was uniformly distributed on carbon aerogel in a line-surface combination fashion. This innovative binding method not only enhanced the loading capacity of g-C3N4 and the mechanical elasticity of aerogel, but also exposed a large number of adsorption sites, resulting in a significant increase in its adsorption capacity for VOCs, exceeding that of commercial activated carbon (AC). In comparison to pure g-C3N4, CAGH exhibited an expanded photo-response range. Under the exposure of visible light, CAGH proved highly effective in eliminating 73.87 % of toluene. In addition, it has demonstrated efficient removal of formaldehyde and acetone VOCs with good cyclic stability. Therefore, this work aims to reduce the emission of pollutants at source and provide an effective and economical strategy for the preparation of clean building materials from renewable materials, with potential applications in the environmental field.

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负载 g-C3N4 的生物碳气凝胶及其去除挥发性有机化合物 (VOC) 的高效能。
室内空气污染主要由挥发性有机化合物(VOC)引起,当其浓度超过临界值时,会对健康造成严重危害。以废弃玉米秸秆为碳源,尿素为氮源,通过水热法和水辅助煅烧法成功制备了负载 g-C3N4H2O-N2-450-3 h 的秸秆衍生碳气凝胶(CAGH)。经过水辅助调节,g-C3N4H2O-N2-450-3 h 在 CAGH 上呈现出蜂窝状和二维丝状的混合结构,而 g-C3N4H2O-N2-450-3 h 则以线-面结合的方式均匀分布在碳气凝胶上。这种创新的结合方法不仅提高了 g-C3N4 的负载能力和气凝胶的机械弹性,还暴露出大量的吸附位点,使其对挥发性有机化合物的吸附能力显著提高,超过了商用活性炭(AC)的吸附能力。与纯 g-C3N4 相比,CAGH 的光响应范围有所扩大。在可见光照射下,CAGH 能高效去除 73.87% 的甲苯。此外,CAGH 还能高效去除甲醛和丙酮挥发性有机化合物,并具有良好的循环稳定性。因此,这项工作旨在从源头上减少污染物的排放,并为利用可再生材料制备清洁建筑材料提供一种有效而经济的策略,在环保领域具有潜在的应用前景。
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来源期刊
CiteScore
16.10
自引率
7.10%
发文量
2568
审稿时长
2 months
期刊介绍: The Journal of Colloid and Interface Science publishes original research findings on the fundamental principles of colloid and interface science, as well as innovative applications in various fields. The criteria for publication include impact, quality, novelty, and originality. Emphasis: The journal emphasizes fundamental scientific innovation within the following categories: A.Colloidal Materials and Nanomaterials B.Soft Colloidal and Self-Assembly Systems C.Adsorption, Catalysis, and Electrochemistry D.Interfacial Processes, Capillarity, and Wetting E.Biomaterials and Nanomedicine F.Energy Conversion and Storage, and Environmental Technologies
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