环保的铜纳米颗粒嵌入了来自玉米的纤维素气凝,具有强大的抗菌和催化降解性能
Thanh Gia Thien Ho1, Thi Thuy Van Nguyen1, Ba Long Do2
1Institute of Chemical Technology, Vietnam Academy of Science and Technology, No.1A, TL29 Str., Thanh Loc Ward, Dist. 12, Ho Chi Minh City, Viet Nam.
International journal of biological macromolecules
|April 21, 2025
概括
这项研究开发了一种可持续的纤维素气凝复合物与铜纳米颗粒 (CuNPs) 用于抗菌和催化用途. 该材料对大肠杆菌和大肠杆菌有很高的疗效,并且有效地催化了p-nitrophenol的降解.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 生物技术是生物技术.
背景情况:
- 为各种应用开发可持续且具有成本效益的材料至关重要.
- 纤维素气凝 (CA) 提供了一个有前途的生物降解平台.
- 铜纳米颗粒 (CuNPs) 具有显著的抗菌和催化性能.
研究的目的:
- 通过将铜纳米颗粒 (CuNPs) 固定在来自玉米废物的纤维素气凝 (CA) 上,创建一种新型的复合材料.
- 评估合成的CuNP装饰的CA对各种细菌菌株的抗菌疗效.
- 为了评估复合物的催化活性在p-nitrophenol的减少.
主要方法:
- 纤维素气凝 (CA) 是从玉米废物中合成的.
- 铜纳米颗粒 (CuNPs) 用一种简单的湿降解方法与葡萄糖在CA上.
- 使用XRD,FT-IR,SEM,EDS,HR-TEM和SAED进行了物理化学表征.
- 对大肠杆菌,大麦芽,金黄色葡萄球菌和沙门氏菌的抗菌活性进行了测试. 按照ISO 20743:2013的标准进行.
- 用NaBH4.4评估了用于减少p-nitrophenol的催化活性.
主要成果:
- 鉴定证实了分散良好的CuNPs (大约. 10 ± 5 nm) 在CA纤维上固定.
- 2.5Cu/CA复合物显示出高抗菌活性:99.6%对大肠杆菌,99.98%对大麦芽,和88.00%对沙门氏菌spp.
- 黄金葡萄球菌表现出耐药性 (52.35%的减少),可能是由于其细胞壁结构.
- 2.5Cu/CA复合物表现出极好的催化性能,在5分钟内实现了95.0%以上的p-nitrophenol转化,速度常数为0.789分钟-1.1.
结论:
- 开发的纤维素气凝-铜纳米粒子复合物是一种高效,可持续和具有成本效益的材料.
- 复合物对广泛的抗微生物应用具有显著的潜力.
- 该材料还显示出有希望的催化作用,用于环境修复,特别是减少有机污染物.
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