Mishra Suryakant, Yogi Priyanka, Sagdeo P R, Kumar Rajesh
Material Research Laboratory, Discipline of Physics & MEMS, Indian Institute of Technology Indore, Simrol, Indore, 453552, India.
Nanoscale Res Lett. 2018 Jan 11;13(1):16. doi: 10.1186/s11671-018-2435-3.
Glucose sensing properties of mesoporous well-aligned, dense nickel oxide (NiO) nanostructures (NSs) in nanopetals (NPs) shape grown hydrothermally on the FTO-coated glass substrate has been demonstrated. The structural study based investigations of NiO-NPs has been carried out by X-ray diffraction (XRD), electron and atomic force microscopies, energy dispersive X-ray (EDX), and X-ray photospectroscopy (XPS). Brunauer-Emmett-Teller (BET) measurements, employed for surface analysis, suggest NiO's suitability for surface activity based glucose sensing applications. The glucose sensor, which immobilized glucose on NiO-NPs@FTO electrode, shows detection of wide range of glucose concentrations with good linearity and high sensitivity of 3.9 μA/μM/cm at 0.5 V operating potential. Detection limit of as low as 1 μΜ and a fast response time of less than 1 s was observed. The glucose sensor electrode possesses good anti-interference ability, stability, repeatability & reproducibility and shows inert behavior toward ascorbic acid (AA), uric acid (UA) and dopamine acid (DA) making it a perfect non-enzymatic glucose sensor.
已证明在涂有FTO的玻璃基板上通过水热法生长的呈纳米花瓣（NP）形状的介孔排列整齐、致密的氧化镍（NiO）纳米结构（NS）具有葡萄糖传感特性。通过X射线衍射（XRD）、电子显微镜和原子力显微镜、能量色散X射线（EDX）以及X射线光电子能谱（XPS）对NiO-NP进行了基于结构研究的调查。用于表面分析的布鲁诺尔-埃米特-泰勒（BET）测量表明，NiO适用于基于表面活性的葡萄糖传感应用。将葡萄糖固定在NiO-NP@FTO电极上的葡萄糖传感器，在0.5 V工作电位下，对宽范围的葡萄糖浓度具有良好的线性检测能力，灵敏度高达3.9 μA/μM/cm²。观察到检测限低至1 μΜ，响应时间小于1 s。该葡萄糖传感器电极具有良好的抗干扰能力、稳定性、重复性和再现性，并且对抗坏血酸（AA）、尿酸（UA）和多巴胺酸（DA）表现出惰性，使其成为一种完美的非酶葡萄糖传感器。
