Cobalt oxide acicular nanorods with high sensitivity for the non-enzymatic detection of glucose

Chung Wei Kung, Chia Yu Lin, Yi Hsuan Lai, R. Vittal, Kuo Chuan Ho

研究成果: Article同行評審

181 引文 斯高帕斯(Scopus)


Acicular cobalt oxide nanorods (CoONRs) were prepared for the non-enzymatic detection of glucose, first by directly growing layered cobalt carbonate hydroxide (LCCH) on a conducting fluorine-doped tin oxide (FTO) substrate using a simple chemical bath deposition (CBD) technique and then by transforming the LCCH into CoONRs through pyrolysis. The composition and grain size of the films of LCCH and CoONRs were verified by X-ray diffraction (XRD); their morphologies were examined by scanning electron microscopic (SEM) and transmission electron microscopic (TEM) images. CoONRs showed high electrocatalytic activity for the electro-oxidation of glucose in alkaline media, and the activity was strongly influenced by NaOH concentration, annealing temperature of CoONRs, and thickness of CoONRs film. The pertinent sensor could be successfully used for the quantification of glucose by amperometric method. The sensing parameters include wide linear range up to 3.5mM, a high sensitivity of 571.8μA/(cm 2mM), and a remarkable low detection limit of 0.058μM. The CoONRs modified electrode exhibited a high selectivity for glucose in human serum, against ascorbic acid, uric acid, and acetaminophen.

頁(從 - 到)125-131
期刊Biosensors and Bioelectronics
出版狀態Published - 2011 9月 15

All Science Journal Classification (ASJC) codes

  • 生物技術
  • 生物物理學
  • 生物醫學工程
  • 電化學


深入研究「Cobalt oxide acicular nanorods with high sensitivity for the non-enzymatic detection of glucose」主題。共同形成了獨特的指紋。