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首页> 外文期刊>The Analyst: The Analytical Journal of the Royal Society of Chemistry: A Monthly International Publication Dealing with All Branches of Analytical Chemistry >The effective peroxidase-like activity of chitosan-functionalized CoFe _2O _4 nanoparticles for chemiluminescence sensing of hydrogen peroxide and glucose
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The effective peroxidase-like activity of chitosan-functionalized CoFe _2O _4 nanoparticles for chemiluminescence sensing of hydrogen peroxide and glucose

机译：壳聚糖功能化的CoFe _2O _4纳米粒子对过氧化氢和葡萄糖化学发光检测的有效过氧化物酶活性

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Here, we report a highly simple and general protocol for functionalization of the CoFe _2O _4 NPs with chitosan polymers in order to make CoFe _2O _4 NPs disperse and stable in solution. The functionalized CoFe _2O _4 NPs (denoted as CF-CoFe _2O _4 NPs) were characterized by scanning electron microscope (SEM), thermogravimetric (TG), X-ray diffraction (XRD) and FT-IR spectra. It was found that the CoFe _2O _4 NPs were successfully decorated and uniformly dispersed on the surface of chitosan without agglomeration. The CF-CoFe _2O _4 NPs were found to increase greatly the radiation emitted during the CL oxidation of luminol by hydrogen peroxide. Results of ESR spin-trapping experiments demonstrated that the CF-CoFe _2O _4 NPs showed catalytic ability to H _2O _2 decomposition into OH radicals. On this basis, a highly sensitive and rapid chemiluminescent method was developed for hydrogen peroxide in water samples and glucose in blood samples. Under optimum conditions, the proposed method allowed the detection of H _2O _2 in the range of 1.0 × 10 ~(-9) to 4.0 × 10 ~(-6) M and glucose in the range of 5.0 × 10 ~(-8) to 1.0 × 10 ~(-5) M with detectable H _2O _2 as low as 500 pM and glucose as low as 10 nM, respectively. This proposed method has been successfully applied to detect H _2O _2 in environmental water samples and glucose in serum samples with good accuracy and precision. This journal is
机译：在这里，我们报告了使用壳聚糖聚合物对CoFe _2O _4 NPs进行功能化的一种非常简单通用的协议，以使CoFe _2O _4 NPs分散并在溶液中稳定。通过扫描电子显微镜（SEM），热重分析（TG），X射线衍射（XRD）和FT-IR光谱对功能化的CoFe _2O _4 NP（表示为CF-CoFe _2O _4 NP）进行了表征。发现CoFe _2O _4 NPs被成功修饰并均匀地分散在壳聚糖表面而没有团聚。发现CF-CoFe _2O _4 NPs大大增加了过氧化氢对鲁米诺进行CL氧化过程中发出的辐射。 ESR自旋捕获实验结果表明，CF-CoFe _2O _4 NPs具有催化H _2O _2分解为OH自由基的能力。在此基础上，针对水样中的过氧化氢和血样中的葡萄糖，开发了一种高度灵敏，快速的化学发光方法。在最佳条件下，所提出的方法允许检测H _2O _2的范围为1.0×10〜（-9）至4.0×10〜（-6）M，葡萄糖的范围为5.0×10〜（-8）到1.0×10〜（-5）M，可检测到的H _2O _2低至500 pM，葡萄糖低至10 nM。该方法已成功应用于环境水样中H _2O _2和血清中葡萄糖的检测，具有较高的准确度和精密度。这本日记是

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