扩张石墨的结构和元素特征对其石油和重金属吸附性能的影响
Divan Coetzee1, Thammasak Rojviroon2, Sumonman Niamlang3
1Department of Materials Engineering, Faculty of Textile Engineering, Technická Univerzita v Liberci, 460 01, Liberec, Czech Republic. divan.coetzee@tul.cz.
Scientific reports
|June 14, 2024
概括
扩展石墨是一种扩展石墨.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 纳米技术 纳米技术
背景情况:
- 扩张石墨的多孔性和油性特性使其适合吸收油.
- 石墨扩张涉及间隔和热处理,产生具有多种特性的材料.
- 合法显著影响扩张石墨的结构和元素性质.
研究的目的:
- 为了研究不同的间歇化方法如何影响扩张石墨的吸附性质.
- 分析扩张石墨结构与其对石油和重金属吸收能力之间的关系.
- 探索石墨烯板在膨胀过程中的潜在功能化及其对金属选择性的影响.
主要方法:
- 使用商业扩张石墨样本 (EG1,EG2,EG3),在不同的间隙和热条件下生产.
- 通过吸收实验量化石油吸附能力.
- 评估重金属吸收和选择性.
- 采用X射线衍射 (XRD) 和元素分析来描述材料特性和潜在的功能化.
主要成果:
- 油吸附能力有所不同,EG1 (55.16g/g) 和EG2 (48.82g/g) 的吸收能力高于EG3 (37.29g/g),由于扩张和多孔性更大.
- 尽管油吸度较低,但EG3的金属颗粒捕获范围更广,可能是由于毛细管效应和范德瓦尔斯力在较小的腔内造成的.
- 通过XRD和元素分析观察到功能化的证据,表明金属复合物形成的潜力,尽管需要进一步研究.
结论:
- 石墨扩张的程度是影响石油吸附能力的主要因素.
- 结构特征,受间隙的影响,决定了油的吸收和选择性重金属吸收.
- 扩张石墨显示了环境修复的潜力,特别是从废油中去除金属,功能化可能会增强这种能力.
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