多壁碳纳米管的吸附性行为与铁纳米颗粒功能化为二甲去除
Ricardo Ribeiro da Cruz1, Thiago Lopes da Silva2, Meuris Gurgel Carlos da Silva1
1School of Chemical Engineering, State University of Campinas-Universidade Estadual de Campinas, Albert Einstein Av., 500, Campinas, SP, 13083-852, Brazil.
Environmental science and pollution research international
|September 10, 2025
概括
本研究提出了一种绿色合成方法,用于铁功能化的MWCNT-OH吸附剂,有效地去除双A (BPA) 污染物. 热再生被证明是对BPA吸附剂的再利用非常有效的.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 双A (BPA) 是一种持久性有机污染物,对人类健康和生态系统产生有害影响.
- 从受污染的水源中有效去除BPA对于环境保护至关重要.
研究的目的:
- 为了评估MWCNT-OH的性能与铁纳米粒子 (MWCNT-OH@Fe) 功能化通过绿色方法合成BPA吸附.
- 研究合成材料的吸附动力学,热力学和再生效率.
主要方法:
- 绿色合成的MWCNT-OH@Fe使用甘巴加斯提取物.
- 吸附实验以确定动力学和容量 (qmax).
- 使用SEM/EDS,BET,FTIR,TGA,XRD和ELS进行表征.
- 评估使用各种化剂和热处理的再生效率.
主要成果:
- 快速吸附动力学 (10-20分钟),以外部膜扩散为速度限制的步骤.
- 在40°C时最大吸附能力 (qmax) 为0.301mmol/g.
- 在40°C时自发吸附与热力学行为的过渡.
- 高热稳定性 (高达500°C) 和特定表面积 (100.3 m2/g).
- 热再生证明了最高的效率,在三个周期中保持吸附能力.
结论:
- 绿色合成的MWCNT-OH@Fe是一种有效的吸附剂,用于去除BPA.
- 该材料具有有利的吸附动力学,容量和稳定性.
- 热再生是再利用吸附剂的可行和有效方法,突出了其在实际应用中的潜力.
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