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在废水中吸附甲基色,使用改性桑/石墨烯氧化物凝珠
Yuan Bai1, Xinyu Gan1, Zongxian Jing1
1School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, People's Republic of China.
Langmuir : the ACS journal of surfaces and colloids
|August 18, 2025
概括
新的硫化基/石墨烯氧化物 (SCSGO) 和N,O-carboxymethyl基/石墨烯氧化物 (N,O-CMCSGO) 吸附剂显示出从废水中去除甲基色染料的高容量. 在五个循环后,SCSGO保持了90%以上的效率,这表明其对可持续水处理的潜力.
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:
- 从废水中去除染料是一个关键的环境挑战.
- 像甲基色这样的色剂是持久性污染物.
- 目前素吸附剂的局限性包括溶解性和稳定性差.
研究的目的:
- 合成和评估新的硫化基/石墨烯氧化物 (SCSGO) 和N,O-碳甲基/石墨烯氧化物 (N,O-CMCSGO) 吸附剂.
- 为了评估它们在吸附甲基色 (MO) 染料中的效率.
- 研究开发的吸附剂的吸附机制和稳定性.
主要方法:
- 合成的SCSGO和N,O-CMCSGO纳米复合材料.
- 对于MO去除的批量吸附实验.
- 吸附异温和动力学研究.
- 使用FTIR和XPS进行表面表征.
- 评估吸附-脱附周期的稳定性.
主要成果:
- SCSGO和N,O-CMCSGO的MO吸附能力高,分别为265.67和239.60毫克/克.
- 弗洛伊德利希等温模型表明通过静电,结合和π-π相互作用的多层吸附.
- 吸附动力学是由外部和粒子内部扩散控制的.
- 在五个吸附-脱吸周期后,SCSGO保留了超过90%的吸附效率.
结论:
- SCSGO和N,O-CMCSGO是有效的吸附剂,可以去除甲基色.
- 表面功能化增强了MO吸附能力和亲和力.
- 吸附剂在废水处理应用中显示出良好的可重复使用性和稳定性.
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