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基于金纳米集群/碳量子点纳米混合体的Hg2+的比度光检测
Junyu Chen1, Rui Tian1, Duo Li1
1Collage of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shannxi 716000, PR China. tianrui100@163.com.
Analytical methods : advancing methods and applications
|January 19, 2024
概括
这项研究提出了一种新的比度光方法,用于检测使用金纳米集群/碳量子点 (AuNCs/CQDs) 的离子 (Hg2+). 开发的探头可以在各种样本中灵敏稳定地检测Hg2+.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
背景情况:
- 电比度光传感为分析检测提供了高灵敏度和稳定性.
- 离子 (Hg2+) 是有毒的环境污染物,需要敏感的检测方法.
研究的目的:
- 开发一种敏感的比度光探针,用于Hg2+检测.
- 使用金纳米集群/碳量子点 (AuNCs/CQDs) 来增强传感能力.
主要方法:
- 通过混合蓝色发射AuNC和色发射CQD,制造AuNC/CQD纳米混合探针.
- 利用Hg2+添加后在434nm和561nm的显著光变化进行比度分析.
- 建立光强度比和Hg2+度之间的线性关系.
主要成果:
- AuNCs/CQDs探测器在434nm和561nm处表现出两个排放峰值.
- Hg2+ 导致 434 nm 的光度下降,而 561 nm 的光度保持稳定.
- 观察到Hg2+检测在8.32 × 10-7到7.69 × 10-5mol L-1的范围内具有良好的线性关系,检测极限为3.58 × 10-7 mol L-1 .
结论:
- 成功建立了一种敏感且稳定的比度光法,用于检测Hg2+.
- AuNCs/CQDs纳米混合探测器在化品和废水等真实样本中展示了Hg2+检测的潜力.
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