作为纳米酶的Ag纳米集群用于检测Hg2+基于聚合增强的过氧化酶类活性
Cuifeng Jiang1, Yong Zhu1, Wanting Han1
1School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
|February 9, 2026
概括
素保护的银纳米集群 (Lys-AgNCs) 表现出可调节的氧化酶和过氧化酶类活性,使敏感的离子检测成为可能. 这种具有成本效益的纳米酶为实际的环境监测应用提供了潜力.
科学领域:
- 纳米材料科学 科学 纳米材料科学
- 生物化学 生物化学
- 分析化学 分析化学
背景情况:
- 银纳米集群 (AgNCs) 正因其催化性质而成为有前途的纳米酶.
- 调节纳米酶活动对于开发选择性和高效的生物传感平台至关重要.
- 氨酸保护提供了一条使AgNCs功能化的途径,可能提高它们的稳定性和基质亲和力.
研究的目的:
- 为了合成和描述素保护的银纳米集群 (Lys-AgNCs).
- 为了研究依赖pH和温度的氧化酶和过氧化酶类活性Lys-AgNCs.
- 使用Lys-AgNCs开发一种选择性和敏感的Hg2+检测方法.
主要方法:
- 素保护的银纳米集群 (Lys-AgNCs) 的合成.
- 光谱测量测试用于评估使用TMB作为基质的氧化酶和过氧化酶类活性.
- 为了优化纳米酶活性,进行pH和温度变化研究.
- 基于聚合增强活动的Hg2+检测传感试验的开发.
主要成果:
- 在低pH (3.6-4.2) 和低温度 (20-40°C) 中,lys-AgNCs表现出可调节的氧化酶类活性.
- 在高pH (4.2-5.4) 时,lys-AgNCs表现出主要的过氧化酶类活性.
- 建立了Hg2+的选择性检测方法,其检测极限低 (0.004μM),在自来水中回收良好.
结论:
- Lys-AgNCs 作为可调节的纳米酶,具有依赖pH值和温度的催化活性.
- 素和Hg2+之间的特定相互作用使得离子的选择性和敏感检测成为可能.
- 基于Lys-AgNCs的成本效益高的传感平台对实际环境监测具有前景.
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