首页|NaYF4:Yb3+,Er3+@SiO2荧光纳米传感器检测牛奶中过氧化氢

NaYF4:Yb3+,Er3+@SiO2荧光纳米传感器检测牛奶中过氧化氢

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  • 国家科技期刊平台
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  • NSTL
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采用溶剂热法合成了稀土掺杂上转换纳米材料NaYF4:Yb3+,Er3+,使用反相微乳液法对其表面进行SiO2包覆制得NaYF4:Yb3+,Er3+@SiO2.采用透射电镜、X射线衍射和傅里叶红外光谱对此材料进行了表征,并基于NaYF4:Yb3+,Er3+@SiO2 与方酸铁(SQA-Fe3+)之间的荧光猝灭原理构建了NaYF4:Yb3+,Er3+@SiO2-SQA-Fe3+荧光纳米传感器,用于微量过氧化氢(H2O2)的检测.在最佳实验条件下,本方法检测H2O2 的线性范围为 1.8～84.0 μmol/L,检出限(3σ)为0.47 μmol/L,牛奶样品中H2O2 的加标回收率为98.4%～99.7%.本方法具有检出限低、稳定性好以及抗干扰能力强等优点,可用于牛奶样品中H2O2 残留的检测.
Preparation of a Fluorescent Nanosensor Based on NaYF4∶Yb3+,Er3+@SiO2 for Detection of Hydrogen Peroxide in Milk
The rare-earth-elements-doped upconversion nanoparticles NaYF4:Yb3+,Er3+were synthesized by solvothermal method,and NaYF4:Yb3+,Er3+@SiO2 were prepared by coating SiO2 on the surface of NaYF4:Yb3+,Er3+by inverse microemulsion method in this work.Based on the fluorescence quenching principle between NaYF4∶Yb3+,Er3+@SiO2 and SQA-Fe3+,a NaYF4∶Yb3+,Er3+@SiO2-SQA-Fe3+fluorescence nanosensor was constructed for detection of trace hydrogen peroxide(H2O2).Under optimal conditions,the linear range of this method for detecting H2O2 was 1.8‒84.0 μmol/L,with detection limit(3σ)of 0.47 μmol/L.The recoveries of H2O2 spiked in milk were 98.4%‒99.7%.This method could be used for detection of H2O2 residue in milk samples,with advantages such as low detection limit,good stability and strong anti-interference ability.

Rare-earth-elements-doped upconversion nanoparticlesHydrogen peroxideFluorescent nanosensorFluorescence quenching

彭孔浩、彭微、白安琪、王凌男、赵伟馨、武玥、郭文、李淑荣、罗利霞、孟佩俊

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包头医学院公共卫生学院,包头 014040

内蒙古自治区卫生检测与评价工程技术中心,包头 014040

稀土掺杂上转换纳米材料 过氧化氢 荧光纳米传感器 荧光猝灭

国家自然科学基金国家自然科学基金内蒙古自治区高等学校青年科技英才支持计划内蒙古自治区自然科学基金内蒙古自治区自然科学基金内蒙古自治区卫生健康委医疗卫生科技计划包头医学院研究生科研创新项目自治区级大学生创新创业训练计划(2023)

8196060182360656NJYT230262023MS080092021MS08055202201383bycx2023006S202310130001

2024

10.19756/j.issn.0253-3820.241007

分析化学
中国化学会 中国科学院长春应用化学研究所

分析化学

CSTPCD北大核心
影响因子：1.423
ISSN：0253-3820
年,卷(期)：2024.52(5)
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