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从咖啡中合成CQD的声化学合成:对聚合机制,优化和可持续性分析的见解
Alfonso Enrique Ramírez Sanabria1, Santiago Urbano Narváez1, Johnny Vilard Gutiérrez Portilla1
1Catalysis Laboratory, Catalysis Research Group, Department of Chemistry, University of Cauca, Popayán, 190002, Colombia.
Heliyon
|January 14, 2025
概括
这项研究介绍了一种绿色方法,利用声化学脱皮来从咖啡中合成碳量子点 (CQD). 可持续的CQD显示蓝色光,平均尺寸为8.27nm.
科学领域:
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
- 纳米技术纳米技术
背景情况:
- 碳量子点 (CQD) 的传统合成通常涉及有毒溶剂和恶劣的条件.
- 越来越需要可持续和环保的纳米材料生产方法.
- 咖啡是一种易于获得的农业废物,是CQD的潜在前体.
研究的目的:
- 开发一种绿色和可持续的方法来从咖啡中合成碳量子点 (CQD).
- 为可复制和可扩展的CQD生产优化合成参数.
- 描述合成的CQD,并将方法与现有策略进行比较.
主要方法:
- 咖啡的热碳化在低温,空气受限的大气中产生生物炭.
- 用于CQD合成的生物炭的 Sonochemical 脱皮,避免使用有毒溶剂.
- 物理化学表征包括传输电子显微镜 (TEM) 用于尺寸和形态分析.
主要成果:
- 合成的CQD显示蓝色光,最大发射在410nm (激发在330nm).
- 在TEM分析中,发现了近球形的CQD,平均尺寸为8.27 ± 1.57 nm.
- 提供了可复制和可扩展生产的详细参数,包括前体质量和工艺时间.
结论:
- 成功建立了一种绿色,无溶剂的声化学方法,用于从咖啡中合成CQD.
- 该方法为生产光CQD提供了一个可持续的替代方案.
- 该研究为可扩展和可重复的CQD生产提供了关键数据,解决了原材料的变化.
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