工程原子Ag1-N6 具有在可见光驱动抗菌膜上消除耐药细菌的增强性能的网站
Shaosheng Rao1, Zhongti Sun1, Qinqin Liu1
1Department of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
ACS nano
|February 22, 2024
概括
使用银单原子定石墨碳化物 (Ag1/CN) 纳米片进行可见光消毒,为净化水提供了安全和实用的替代方案. 这种新型的Ag1/CN膜实现了99.9%的细菌去除,性能优于现有的材料.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 光催化作用的光催化
背景情况:
- 可见光消毒是一种比紫外线灭菌更安全,更实用的替代方案.
- 开发高效的光催化剂用于水处理对于公共卫生至关重要.
- 石墨碳化物 (g-C3N4) 是有希望的,但需要增强以获得最佳性能.
研究的目的:
- 开发银 (Ag) 单原子固定g-C3N4 (P-CN) 纳米片 (Ag1/CN) 用于可见光驱动的水消毒.
- 通过Ag单原子合并来研究增强抗菌活性的机制.
- 制造和测试基于Ag1/CN的膜,用于实际的水处理应用.
主要方法:
- Ag单原子固g-C3N4 (Ag1/CN) 纳米片的合成.
- 使用自旋涂层方法制造基于Ag1/CN的膜.
- 了解O2吸附和激活的第一原则计算.
- 在可见光照射下对耐药细菌进行抗菌疗效测试.
- 使用流量装置在自然水和家庭废水中的性能评估.
主要成果:
- 单个Ag1原子形成了Ag1-N6图案,显著增强了内置的电场,并优化了反应性氧物种 (ROS) 生产.
- 在可见光下,Ag1/CN表现出99.9%的抗菌效率对抗多种耐药细菌,比纯P-CN高24.8倍.
- 基于Ag1/CN的膜在处理自然和家庭废水时保持了99.9%的杀菌效率.
- Ag1-N6基因抑制了Ag离子的释放,确保了良好的生物相容性.
- 第一个原则的计算证实了单个Ag原子增强的O2激活,导致增加的OH基生成.
结论:
- 在g-C3N4中安装Ag单原子是可见光驱动的水消毒的高效策略.
- 基于Ag1/CN的膜显示出在自然和家庭废水处理中实践应用的巨大潜力.
- 这种方法为净化水的现有g-C3N4基光催化剂提供了优质的替代方案.
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