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来自Luffa海绵生物炭的石墨烯气凝,用于有效地从废水中去除染料

Zhuang Liu^1,2, Bo Gao¹, Haiyang Fu¹

¹Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang 110819, Liaoning Province, China.

Langmuir : the ACS journal of surfaces and colloids

|July 4, 2025

概括

研究人员开发了一种新的石墨烯气凝复合物吸附剂从luffa海绵生物炭,以有效地去除甲蓝. 这种可持续材料具有很高的吸附能力和可用于废水处理的可重复使用性.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
纳米技术纳米技术

背景情况:

污染废水的染料,如甲蓝 (MB) 造成了重大的环境挑战.
开发高效,具有成本效益和可持续的吸附剂对于去除染料至关重要.
生物质衍生材料为先进吸附剂合成提供了前体的潜力.

研究的目的:

通过使用luffa海绵生物炭 (LSBC) 合成一种新的三维石墨烯气凝复合吸收剂 (LGA).
研究LGA的吸附性能,以有效地从水溶液中去除甲基蓝.
探索开发的吸附剂的合成机制,吸附特性和可重复使用性.

主要方法:

通过活性化LSBC的热解合成LGA,然后进行溶热静电联合组装.
使用显微镜和表面分析技术对LGA进行表征.
系统地调查吸附参数:pH值,初始染料度,吸附剂剂量,温度和接触时间.

主要成果:

由于LSBC,LGA表现出超性和丰富的含氧功能组.
LGA具有层次性的多孔结构,具有较高的特定表面积 (237 m2/g).
在pH值6.0下达到1108.5mg/g的最大MB吸附能力,遵循兰格穆尔等温和和伪二次动力学.
吸附机制包括π-π相互作用,结合,静电吸引和孔隙填充.
LGA表现出卓越的稳定性和可重复使用性,在12个循环后保持超过90%的容量.

结论:

合成的LGA是一种高效,低成本和可重复使用的吸附剂,用于去除甲蓝.
这项研究强调了一种可持续的方法,用于高价值的农业废物 (luffa海绵).
LGA为处理染料污染废水提供了一个有前途的解决方案.

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