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以葡萄糖(C6H12O6)为还原剂、聚乙烯吡咯烷酮(PVP)为分散剂,采用液相还原法在室温水体系中快速制备不同浓度的纳米银粒子,对产物进行了表征,并将其用于H2O2检测.结果表明,通过控制Na OH和PVP用量,可制得粒径30?55 nm、纯相的球形纳米银胶体,在H2O2检测中活性良好.纳米银胶体表面等离子共振峰强度变化与H2O2浓度呈线性关系,H2O2的检测灵敏度高,检测限为5.0?10?7?5.0?10?2 mol/L.
Using glucose (C6H12O6) as reductant and polyvinylpyrrolidone (PVP) as dispersant, different concentrations of nano-silver particles were rapidly prepared by liquid reduction at room temperature. The products were characterized and used in H2O2 The results showed that spherical nano silver colloid with a particle size of 30-55 nm could be obtained by controlling the amount of Na OH and PVP and the activity was good in the detection of H2O2.The changes of the surface plasmon resonance intensity and the concentration of H2O2 In a linear relationship, the detection sensitivity of H2O2 is high, with the detection limits of 5.0? 10? 7? 5.0? 10? 2 mol / L.