A Novel Tyrosinase Biosensor based on Graphene and Co3O4 Nanocomposite Materials for Rapid Determining Catechol

作者：Liang Kehong; Fu Xiaochen; Wu Lidong; Qin Yuchang; Song Yi

来源：International Journal of Electrochemical Science, 2016, 11(1): 250-258.

• Electrochemical biosensor
• tyrosinase
• rapid dectection
• catechol

Based on graphene and Co3O4 nanocomposite (GP-Co3O4), a novel tyrosinase biosensor is constructed for rapid determining catechol. The results demonstrated that GP-Co3O4 modified tyrosinase biosensor possessed fantastic advantages over tyrosinase biosensor in sensitivity and limit of detection (LOD). This might be ascribed to the large specific surface area of graphene and spongy Co3O4. The GP-Co3O4 modified tyrosinase biosensor showed superb analytical performances, such as a linear range from 1 to 30 mu mol L-1, LOD of 30 nmol L-1, and sensitivity of 1856.8 mA cm(-2) M-1. The tyrosinase biosensor was successfully utilized for detecting catechol, and proved to be a potential and reliable method for analysis emergency affairs of catechol on-site.

• 出版日期2016-1
• 单位中国水产科学研究院