当前位置: X-MOL 学术Bull. Mater. Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Amperometric assay of hydrazine utilizing electro-deposited cobalt hexacyanoferrate nanocrystals on graphene oxide sheets
Bulletin of Materials Science ( IF 1.8 ) Pub Date : 2020-08-28 , DOI: 10.1007/s12034-020-02219-y
Mamta Yadav , Vellaichamy Ganesan , Rupali Gupta , Dharmendra Kumar Yadav , Piyush Kumar Sonkar

Abstract In-situ electrochemical deposition of cobalt hexacyanoferrate (CoHCF) on graphene oxide (GO) and its application for the electrocatalytic hydrazine determination in real samples are described in this research study. Co 2+ is immobilized on GO and the resulting material, GO-Co 2+ is coated on the surface of glassy carbon (GC) electrode. The fabricated electrode (GC/GO-Co 2+ ) is subjected to a continuous potential cycling in the range of 0.0–1.0 V which results in the formation of a thin CoHCF film on the surface of GO coated on the GC electrode (abbreviated as GC/GO-CoHCF). The synthesized GO-CoHCF composite material is characterized by Fourier transform infrared and scanning electron microscopy. GC/GO-CoHCF electrode electrocatalytically oxidizes hydrazine at low overpotential (0.63 V) and this phenomenon is subsequently utilized for the sensitive determination of hydrazine in aqueous solutions. It exhibits a wide linear calibration range (0.1–400 µM), high sensitivity (0.93 µA µM −1 cm −2 ) and low limit of detection (17.5 nM) for the determination of hydrazine. Further, this electrode is employed for hydrazine determination in real samples. Graphic abstract

中文翻译:

利用氧化石墨烯片上电沉积六氰基铁酸钴纳米晶体对肼进行电流分析

摘要 本研究描述了六氰基铁酸钴 (CoHCF) 在氧化石墨烯 (GO) 上的原位电化学沉积及其在实际样品中电催化肼测定中的应用。Co 2+ 固定在GO上,所得材料GO-Co 2+ 涂覆在玻璃碳(GC)电极表面。制备的电极(GC/GO-Co 2+ )在 0.0-1.0 V 范围内进行连续电位循环,导致在 GC 电极上涂覆的 GO 表面形成 CoHCF 薄膜(缩写为GC/GO-CoHCF)。合成的GO-CoHCF复合材料通过傅里叶变换红外和扫描电子显微镜进行表征。GC/GO-CoHCF 电极在低过电位 (0. 63 V),随后将这种现象用于水溶液中肼的灵敏测定。它具有宽线性校准范围 (0.1–400 µM)、高灵敏度 (0.93 µA µM -1 cm -2 ) 和低检测限 (17.5 nM),可用于测定肼。此外,该电极还用于实际样品中肼的测定。图形摘要
更新日期:2020-08-28
down
wechat
bug