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Synthesis and characterization of NiFe2O4 nanoparticles using the hydrothermal method as magnetic catalysts for electrochemical detection of norepinephrine in the presence of folic acid
Journal of the Chinese Chemical Society ( IF 1.6 ) Pub Date : 2019-05-29 , DOI: 10.1002/jccs.201900073
Mohadeseh Safaei 1, 2 , Hadi Beitollahi 3 , Masoud Reza Shishehbore 1
Affiliation  

In this article, we present a simple and efficient method to synthesize a magnetic NiFe2O4 nanocatalyst under hydrothermal conditions. Fourier transform infrared spectroscopy (FT‐IR), X‐ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive X‐ray spectroscopy (EDX) analyses confirmed the synthesis of NiFe2O4 nanoparticles. These nanoparticles showed satisfactory catalytic activity for determination of norepinephrine (NE) in the presence of folic acid (FA) using cyclic voltammetry (CV) and differential pulse voltammetry (DPV) methods. Differential pulse voltammetry peak currents of NE increased linearly with their concentrations in the range of 1.0 × 10−7–5.0 × 10−4 M, and the detection limit for NE was 2.3 × 10−8 M, respectively. The modified electrode displayed strong function for resolving the overlapping voltammetric responses of NE and FA into two well‐defined voltammetric peaks. In the mixture containing NE and FA, the two compounds can well separate from each other with a potential difference of 510 mV between NE and FA, which was large enough to determine NE and FA individually and simultaneously. Additionally, the prepared electrochemical sensor demonstrated a practical feasibility for real sample determination.

中文翻译:

使用水热法作为磁性催化剂在叶酸存在下对去甲肾上腺素进行电化学检测的NiFe2O4纳米粒子的合成和表征

在本文中,我们提出了一种在水热条件下合成磁性NiFe 2 O 4纳米催化剂的简单有效的方法。傅里叶变换红外光谱(FT-IR),X射线衍射(XRD),扫描电子显微镜(SEM)和能量色散X射线光谱(EDX)分析证实了NiFe 2 O 4纳米颗粒的合成。这些纳米颗粒在使用循环伏安法(CV)和微分脉冲伏安法(DPV)的叶酸(FA)存在下,测定去甲肾上腺素(NE)具有令人满意的催化活性。NE的差分脉冲伏安法峰值电流随其浓度在1.0×10 -7 –5.0×10 -4范围内线性增加M,NE的检出限分别为2.3×10 -8M。修饰的电极显示出强大的功能,可将NE和FA的重叠伏安响应解析为两个明确定义的伏安峰。在含有NE和FA的混合物中,两种化合物可以很好地彼此分离,NE和FA之间的电位差为510 mV,该电位差足以单独和同时测定NE和FA。另外,所制备的电化学传感器证明了实际样品测定的实际可行性。
更新日期:2019-12-11
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