Metallurgical and Materials Engineering, Faculty of Engineering and Architecture, Necmettin Erbakan University, Konya, Turkey.
Anal Methods. 2021 Jul 28;13(28):3187-3195. doi: 10.1039/d1ay00446h. Epub 2021 Jun 28.
The surface of graphene was decorated with nickel/nickel oxide/nickel-boron particles to develop high-performance electrochemical sensors. The nanohybrid structures were prepared via a one-step reduction method under an oxygen-rich atmosphere to obtain an oxide phase besides metallic nickel nanoparticles. In addition, the use of NaBH as the reducing agent enabled simultaneous formation of Ni-B species on the graphene surface. XRD, XPS, TEM, Raman, and TGA analyses were implemented to characterize the samples. The XRD and XPS results revealed the presence of Ni/NiO/Ni-B on the surface of graphene. The electroanalytical performance of the nanocomposite was investigated against acetaminophen, which is an extensively exploited antipyretic and analgesic drug. The analytical performance results showed that the Ni/NiO/Ni-B/Gr-based sensors had a very wide working window between 10 μM and 2500 μM (y (μA) = 10.706x (mM) + 0.3151 (R = 0.9993)). The excellent storage stability, selectivity, and recovery results along with the high analytical performance make the novel Ni/NiO/Ni-B/Gr hybrid systems promising materials for the development of novel sensor platforms.
在富氧气氛下通过一步还原法制备了纳米杂化结构，以获得除了金属镍纳米颗粒以外的氧化物相。此外，使用 NaBH4 作为还原剂可以在石墨烯表面上同时形成 Ni-B 物种。进行了 XRD、XPS、TEM、拉曼和 TGA 分析来对样品进行表征。XRD 和 XPS 结果表明，在石墨烯表面上存在 Ni/NiO/Ni-B。研究了纳米复合材料对乙酰氨基酚的电分析性能，乙酰氨基酚是一种广泛使用的解热镇痛药。分析性能结果表明，基于 Ni/NiO/Ni-B/Gr 的传感器在 10 μM 和 2500 μM 之间具有非常宽的工作窗口（y（μA）= 10.706x（mM）+ 0.3151（R = 0.9993））。优异的储存稳定性、选择性和回收率以及高分析性能使得新型 Ni/NiO/Ni-B/Gr 杂化体系成为开发新型传感器平台的有前途的材料。
