Study on Hydrogen Peroxide Sensor Based on Prussian Blue Modified Graphene/ Indium-Tin Oxide Substrate

• Main Authors: Wei-LingZeng, 曾偉玲
• Other Authors: Hsien-Chang Chang
• Format: Others
• Language: en_US
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/gbufpt

碩士 === 國立成功大學 === 生物醫學工程學系 === 103 === Graphene is one of the most popular materials because of its unique structure and properties. There are many kinds of them and their analogue which was used in electrochemical sensing fields already for the purpose of the improvement of the conductivity and catalytic ability. It is an attempt to establish a sensing platform by using a defect-less, single layer and continues graphene fabricated by chemical vapor deposition with copper foil as a catalyst and is transferred on a transparent and conductive indium-tin-oxide coated glass. Hydrogen peroxide is a basal electroactive matter as a sensing target due to their widely application in industry and metabolism monitor. Numerous kinds of materials enter this field mentioned above independently or coordinately for electrochemical detection in order to lower the over-potential on interface of solid electrode such as organic and inorganic elements. The effective range is commonly thought to be from μM to mM, which is determined by the application. The Prussian blue material is called as an ‘artificial enzymes’ because of its excellent catalytic ability toward hydrogen peroxide. The reaction activity is thought to be merely slightly smaller than organic enzyme base one and is suitable for amperometric measurement. In this study, we used the Prussian blue modified graphene based electrode to develop a transparent and effective sensing for hydrogen peroxide detection. This study has successfully developed a hydrogen peroxide sensor by simply modifying PB and reached the linear range from 6.6 μM to 2.8 mM and the limit of detection for 3.7 μM (S/N=3).