当前位置: X-MOL 学术J. Mater. Chem. B › 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.)
Electrodeposition of nickel nanostructures using silica nanochannels as confinement for low-fouling enzyme-free glucose detection.
Journal of Materials Chemistry B ( IF 6.1 ) Pub Date : 2020-04-29 , DOI: 10.1039/c9tb02472g
Jialian Ding 1 , Xinru Li , Lin Zhou , Rongjie Yang , Fei Yan , Bin Su
Affiliation  

This work reports an enzyme-free glucose sensor based on nickel nanostructures electrodeposited on a fluorine-doped tin oxide (FTO) electrode modified with a silica nanochannel membrane (SNM). The SNM consists of a high density of nanochannels vertically oriented to the electrode surface, which can spatially confine the electrodeposition of nickel nanostructures and protect them to make Ni@SNM/FTO electrodes. In alkaline media, nickel could be converted to nickel oxyhydroxide that displayed catalytic activity toward the anodic oxidation of glucose. The electrodes could thus function as enzyme-free sensors for glucose detection. Under optimal conditions, the sensors exhibited an excellent analytical performance, with an analytical sensitivity as high as 62.3 μA mM-1 cm-2, a wide detection range from 10 μM to 12 mM and a low detection limit of 0.44 μM. Furthermore, given nickel nanostructures were embedded inside the nanochannels of the SNM (with a diameter of 2-3 nm), the sensor possessed anti-fouling ability and outstanding current stability, thus allowing the direct detection of glucose in dilute blood samples.

中文翻译:

使用二氧化硅纳米通道对镍纳米结构进行电沉积,以实现低污染,无酶的葡萄糖检测。

这项工作报告了一种基于镍纳米结构的无酶葡萄糖传感器,该镍纳米结构电沉积在用二氧化硅纳米通道膜(SNM)改性的掺氟氧化锡(FTO)电极上。SNM由垂直于电极表面的高密度纳米通道组成,可以在空间上限制镍纳米结构的电沉积,并保护它们以制造Ni @ SNM / FTO电极。在碱性介质中,镍可以转化为羟基氧化镍,对镍的阳极氧化具有催化活性。电极因此可以用作用于葡萄糖检测的无酶传感器。在最佳条件下,这些传感器表现出出色的分析性能,分析灵敏度高达62.3μAmM-1 cm-2,检测范围从10μM到12 mM,检测限低至0。44微米 此外,由于镍纳米结构被嵌入到SNM的纳米通道内(直径为2-3 nm),该传感器具有防污能力和出色的电流稳定性,因此可以直接检测稀释血液样本中的葡萄糖。
更新日期:2019-12-14
down
wechat
bug