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氧化石墨和剥离氧化石墨作为修饰剂对尿酸和叶酸存在下多巴胺伏安法测定的影响。

Effect of graphite oxide and exfoliated graphite oxide as a modifier for the voltametric determination of dopamine in presence of uric acid and folic acid.

机构信息

Department of P. G. Studies and Research in Industrial Chemistry, Kuvempu University, Jnanasahyadri, Shankaraghatta, Shimoga, Karnataka, 577 451, India.

National Assessment and Accreditation Council, Jain University, Bangalore, Karnataka, 560 069, India.

出版信息

Sci Rep. 2021 Dec 15;11(1):24040. doi: 10.1038/s41598-021-01328-w.

DOI:10.1038/s41598-021-01328-w
PMID:34911963
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8674362/
Abstract

In the present work, exfoliated graphite oxide (E-GO) was prepared by sonicating graphite oxide (GO) (prepared by modified Hummer's and Offemam methods). Prepared GO and E-GO were characterized using infrared absorption spectroscopy, X-ray diffraction, and scanning electron microscopy. The electrocatalytic properties of GO and E-GO towards detection of dopamine (DA), uric acid (UA), and folic acid (FA) were investigated using cyclic voltammetry and differential pulse voltammetry. Our results revealed that E-GO has a slighter advantage over the GO as an electrode modifier for detection DA, UA, and FA, which might be ascribed to the good conductivity of E-GO when compared to the GO.

摘要

在本工作中，通过超声处理氧化石墨（GO）（采用改良的 Hummer 和 Offemam 方法制备）来制备剥离石墨氧化物（E-GO）。使用红外吸收光谱、X 射线衍射和扫描电子显微镜对制备的 GO 和 E-GO 进行了表征。通过循环伏安法和差分脉冲伏安法研究了 GO 和 E-GO 对多巴胺（DA）、尿酸（UA）和叶酸（FA）检测的电催化性能。我们的结果表明，与 GO 相比，E-GO 作为电极修饰剂在检测 DA、UA 和 FA 方面具有稍微弱的优势，这可能归因于 E-GO 与 GO 相比具有更好的导电性。

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