Xu Jiangwen, Xu Na, Zhang Xuming, Gao Biao, Zhang Ben, Peng Xiang, Fu Jijiang, Chu Paul K, Huo Kaifu
The State Key Laboratory of Refractories and Metallurgy, School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, P. R. China.
J Mater Chem B. 2017 Mar 7;5(9):1779-1786. doi: 10.1039/c6tb02784a. Epub 2017 Feb 15.
A novel and simple strategy for the in situ fabrication of the microstructure composed of nickel (Ni) nanoparticles on nitrogen-doped TiO nanowire arrays (Ni NPs/TiON NWAs) by nitridation of NiTiO nanowire arrays is designed and described. During nitridation, Ni is separated from NiTiO and aggregates uniformly on the surface. The reshaped composite that is supported by the compact structure and interface of the formed NPs and remaining highly conductive TiON NW forms a robust electrode in highly sensitive and selective non-enzymatic glucose sensing. The materials exhibit outstanding electrocatalytic activity for glucose oxidation boasting a sensitivity of 421 μA mM cm, a low detection limit of 0.39 μM, as well as high selectivity against interfering species such as ascorbic acid (AA), uric acid (UA) and dopamine (DA).
设计并描述了一种新颖且简单的策略，通过对NiTiO纳米线阵列进行氮化处理，原位制备由镍（Ni）纳米颗粒组成的微结构（Ni NPs/TiON NWAs），该微结构负载于氮掺杂TiO纳米线阵列上。在氮化过程中，Ni从NiTiO中分离出来并均匀聚集在表面。由形成的纳米颗粒紧密结构和界面支撑且剩余高导电TiON NW的重塑复合材料，在高灵敏度和选择性的非酶葡萄糖传感中形成了坚固的电极。该材料对葡萄糖氧化表现出出色的电催化活性，灵敏度为421 μA mM cm，检测限低至0.39 μM，并且对诸如抗坏血酸（AA）、尿酸（UA）和多巴胺（DA）等干扰物质具有高选择性。
