氧化水泥复合材料的低生态毒理影响添加了2D碳基纳米添加剂
Simona Lencova1,2, Jana Kofronova2,3, Vaclav Peroutka1
1Department of Biochemistry and Microbiology, University of Chemistry and Technology, Prague 166 28, Czech Republic.
ACS omega
|August 18, 2025
概括
石墨烯和石墨烯氧化物增强氧化水泥的性能. 虽然这些纳米材料对某些生物体有一定的毒性,但它们并没有显著增加水泥复合材料的整体生态毒性.
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:
- 氧化水泥 (MOC) 是波特兰水泥的可持续替代品.
- 石墨烯 (G) 和石墨烯氧化物 (GO) 可以增强MOC的机械和防水性能.
- G和GO增强的MOC的生态毒理影响基本上是未知的.
研究的目的:
- 评估石墨烯 (G750) 和石墨烯氧化物 (GO) 对各种 prokaryotic 和真核生物的生态毒理学影响.
- 评估G750和GO对环境生物的影响,无论是孤立的还是嵌入MOC.
- 为了确定G750和GO是否会增加MOC的生态毒性.
主要方法:
- 测试了G750和GO对细菌 (, ,) 和真核生物 (, , ,) 的影响.
- 在MOC复合材料中嵌入评估的G750和GO.
- 评估了抗菌,抗菌膜,植物毒性和藻类生长抑制作用.
- 进行了体外和体外基因毒性和ROS生产测定.
主要成果:
- G750和GO显示了特定物种的抗菌活性,抑制了生长和生物膜的形成.
- 单独的MOC显示出强烈的抗菌活性,不受G750或GO添加的影响.
- G750和GO在度≥0.05g/L时是有毒的,GO更有毒.
- 观察到植物毒性,特别是在GO和MOC-G750复合物中;藻类生长受到MOC-GO的抑制.
- 没有观察到G750,GO或MOC的基因毒性潜力或显著的ROS产量.
结论:
- 将G750和GO纳入MOC可以改善材料性能,但不会显著增加生态毒性.
- 对物种和材料的具体反应需要对G和GO-MOC复合材料进行彻底的环境影响评估.
- MOC本身具有显著的抗微生物特性.
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