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淀粉包覆氧化铜纳米立方体的绿色合成及其在葡萄糖直接电化学检测中的应用。

Green synthesis of starch-capped CuO nanocubes and their application in the direct electrochemical detection of glucose.

作者信息

Jiménez-Rodríguez Antonio, Sotelo Eduardo, Martinez Lidia, Huttel Yves, González María Ujué, Mayoral Alvaro, García-Martín José Miguel, Videa Marcelo, Cholula-Díaz Jorge L

机构信息

School of Engineering and Sciences, Tecnologico de Monterrey, Eugenio Garza Sada 2501, Monterrey 64849, NL, Mexico.

Materials Science Factory, Instituto de Ciencia de Materiales de Madrid, ICMM-CSIC, Sor Juana In's de la Cruz 3, Madrid 28049, Spain.

出版信息

RSC Adv. 2021;11(23):13711-13721. doi: 10.1039/d0ra10054d. Epub 2021 Apr 13.

DOI:10.1039/d0ra10054d
PMID:34257952
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7611200/
Abstract

Glucose determination is an essential procedure in different fields, used in clinical analysis for the prevention and monitoring of diabetes. In this work, modified carbon paste electrodes with CuO nanocubes (CuO NCs) were developed to test electrochemical glucose detection. The synthesis of the CuO NCs was achieved by a green method using starch as the capping agent, obtaining cubic-like morphologies and particle sizes from 227 to 123 nm with increasing amounts of the capping agent, as corroborated by electron microscopy analysis. Their crystalline structure and purity were determined by X-ray diffraction. The capability of starch as a capping agent was verified by Fourier-transform infrared spectroscopy, in which the presence of functional groups of this biopolymer in the CuO NCs were identified. The electrochemical response to glucose oxidation was determined by cyclic voltammetry, obtaining a linear response of the electrical current as a function of glucose concentration in the range 100-700 μM, with sensitivities from 85.6 to 238.8 μA mM cm, depending on the amount of starch used in the synthesis of the CuO NCs.

摘要

葡萄糖测定是不同领域中的一项重要程序，用于临床分析以预防和监测糖尿病。在这项工作中，开发了带有氧化铜纳米立方体（CuO NCs）的修饰碳糊电极来测试电化学葡萄糖检测。CuO NCs的合成通过一种绿色方法实现，使用淀粉作为封端剂，随着封端剂用量增加，获得了立方状形态且粒径在227至123纳米之间的产物，这一点通过电子显微镜分析得到了证实。它们的晶体结构和纯度通过X射线衍射确定。淀粉作为封端剂的能力通过傅里叶变换红外光谱得到验证，其中在CuO NCs中鉴定出了这种生物聚合物的官能团的存在。通过循环伏安法测定了对葡萄糖氧化的电化学响应，在100 - 700 μM范围内获得了电流作为葡萄糖浓度函数的线性响应，灵敏度在85.6至238.8 μA mM cm之间，这取决于合成CuO NCs时使用的淀粉量。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/744a/8697523/817eb023c3e4/d0ra10054d-f10.jpg
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