来自玻璃废物的纳米结构玻璃陶材料具有抗菌活性
Juliani P Caland1, João Baptista2, Gabrielle Caroline Peiter2
1Núcleo de Física Aplicada, Instituto de Física, Brasília, Universidade de Brasília-UnB, Brasilia 70910-900, DF, Brazil.
Molecules (Basel, Switzerland)
|July 13, 2024
概括
废玻璃可以通过简单的热处理转化为抗菌材料. 石英玻璃,当加热到720°C时,显示出对大肠杆菌有强大的杀菌作用.
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:
- 城市废玻璃由于回收基础设施不足而带来了环境挑战.
- 石和珀玻璃在废物流中大量存在,是潜在的原材料来源.
- 开发有效的玻璃废弃物回收方法对于可持续性至关重要.
研究的目的:
- 开发一种负担得起的方法,将废玻璃转化为抗菌材料.
- 为了研究热处理玻璃废物的抗菌性质.
- 描述由此产生的玻璃陶材料,并了解其杀菌作用的机制.
主要方法:
- 废玻璃 (石和珀) 在720°C进行热处理.
- 对大肠杆菌的抗微生物活性进行了测试.
- 激光诱导分解光谱 (LIBS) 用于元素分析.
- 传输电子显微镜 (TEM) 描述了材料结构.
主要成果:
- 废玻璃的热处理会诱导结晶的纳米区域,这些纳米区域负责抗菌活性.
- 在720°C处理的石废玻璃与珀玻璃相比,表现出更高的抗菌活性.
- 来自石英废玻璃的玻璃陶在30分钟内对大肠杆菌产生了快速的抗菌作用.
- TEM证实玻璃矩阵内存在纳米晶体.
结论:
- 废玻璃可以通过热处理重新用于有效的抗微生物玻璃陶材料.
- 在热处理过程中纳米区域的形成是杀菌性质的关键.
- 石英玻璃为开发可持续的抗微生物解决方案提供了一个有希望的前体.
相关概念视频
01:27Chemical Agents for Microbial Control
Chemicals play important roles in controlling microbial growth by targeting microbial structures and functions as sanitizers, antiseptics, disinfectants, and sterilants.Alcohols are commonly used sanitizers, effectively disrupting lipid membranes, which compromises cell integrity. They are also used as antiseptics and disinfectants due to their rapid action and versatility.Phenols and their derivatives phenolics , known for denaturing proteins and disrupting cell membranes, are particularly...
01:24Microbial Corrosion
Microbiologically Influenced Corrosion (MIC) is a significant form of material degradation caused by the metabolic activities of microorganisms. This phenomenon poses substantial challenges across various industries, including oil and gas, maritime, and water treatment sectors.MIC occurs when microorganisms, such as bacteria, archaea, and fungi, colonize metal surfaces, forming biofilms that alter the local electrochemical environment. These biofilms can lead to the production of corrosive...