材料科学
选择性
检出限
重复性
线性范围
联氨(抗抑郁剂)
再现性
热液循环
制作
安培法
纳米技术
氢氧化钴
化学工程
化学
电化学
色谱法
有机化学
电极
催化作用
物理化学
病理
工程类
医学
替代医学
作者
Tuantuan Zhou,Peng Lu,Zhang Zhang,Qiang Wang,Ahmad Umar
标识
DOI:10.1016/j.snb.2016.05.075
摘要
Herein, we report the successful synthesis of chrysanthemum-like Co3O4 structures composed of high-aspect ratio perforated Co3O4 nanoneedles. The chrysanthemum-like Co3O4 structures were obtained by the heat treatment of cobalt-carbonate-hydroxide (Co(CO3)0.5(OH)·0.11H2O) chrysanthemum structures which were prepared by simple and facile hydrothermal process. The prepared materials were characterized using several techniques which confirmed that the prepared materials, i.e. precursor Co(CO3)0.5(OH)·0.11H2O and Co3O4, both possess chrysanthemum-like morphologies which are made by the accumulation of radially oriented nanoneedles. The prepared chrysanthemum-like Co3O4 structures were further used as electron mediators to fabricate highly sensitive and selective hydrazine (N2H4) chemical sensors. The sensitivity, detection limit, linear range, selectivity, repeatability, and reproducibility of such fabricated chrysanthemum-like Co3O4 structures base hydrazine chemical sensor was comprehensively investigated. It was observed that the sensing of the fabricated sensors are highly dependent on the morphology of Co3O4, and the chrysanthemum-like Co3O4 structures exhibited the best sensing performance. Further, a good repeatability and reproducibility, longtime stability and great selectivity both in amperometric and voltammetric chrysanthemum-like Co3O4 structures based sensors were observed. The detailed sensing results confirmed that the fabricated chemical sensor exhibited a high sensitivity of 107.9 μA mM−1, a detection limit of 3.7 μM and a linear range of 50–1088 μM. The observed results demonstrate that the synthesized chrysanthemum-like Co3O4 offers a promising probe candidate for the fabrication of highly sensitive and selective chemical sensors.
科研通智能强力驱动
Strongly Powered by AbleSci AI