添加的铁酸盐制造石墨烯氧化物纳米复合材料,具有高效的光催化和抗菌活性
Kiran Khalid1, Anam Zahra1, Umay Amara1
1Institute of Chemical Sciences, Bahauddin Zakariya University, Multan 60800, Pakistan.
Chemosphere
|July 17, 2023
概括
与石墨烯氧化物 (CoTi0.2Fe1.8O4/GO NC) 组成的化化铁纳米颗粒有效降解刚果红色染料并表现出抗菌性质. 这种新型材料为水资源整治和病原体控制提供了一个有前途的解决方案.
科学领域:
- 材料科学:用于环境应用的纳米复合材料的合成和表征.
- 环境科学:污染物的光催化降解和抗菌活性.
- 纳米技术:化费里特纳米粒子和石墨烯氧化物复合材料的应用.
背景情况:
- 染料和微生物造成的水污染给环境带来了重大挑战.
- 配合的铁纳米颗粒 (CoTixFe2-xO4NP) 显示出水处理的潜力,但受到电子孔重组的影响.
- 石墨烯氧化物 (GO) 可以减轻纳米复合材料中的重组问题,提高光催化效率.
研究的目的:
- 为了合成和描述一种新的CoTi0.2Fe1.8O4/GO纳米复合材料 (NC).
- 评估NC对刚果红色染料的光催化降解效率.
- 评估NC对病原性细菌的抗微生物活性.
主要方法:
- 使用简单的超声波制造 CoTi0.2Fe1.8O4/GO NC 的制造.
- 通过SEM,XRD和Zeta潜力测量进行表征.
- 在可见光照射下进行光催化降解实验;通过MIC和MBC测试评估抗菌活性.
主要成果:
- 在GO上,SEM证实了CoTi0.2Fe1.8O4NP的同质分散.
- XRD显示出极好的结晶性;泽塔电位 (-21.52 mV) 证实了极好的稳定性.
- CoTi0.2Fe1.8O4/GO NC实现了91%的刚果红色降解效率,超过了裸体NP (78%).
- 狭窄的带隙 (1.07 eV) 和增强的电荷分离有助于改善光催化.
- 该NC证明了针对P. aeruginosa和S. aureus的显著抗菌活性.
- 该NC可以在五个周期内重复使用,性能损失最小 (~2%).
结论:
- 合成的CoTi0.2Fe1.8O4/GO NC是一种用于光催化染料降解的高度稳定和高效的材料.
- 该NC表现出有希望的抗微生物特性,表明其在净化水的潜力.
- 这种优化的纳米复合材料为处理染料污染水和对抗细菌病原体提供了双重作用的解决方案.
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