Proceedings title: Advanced Materials Research
Editors: Pei L
Publisher: Trans Tech Publications
Volume number: 452-453
Conference information: Management, Manufacturing and Materials Engineering
Abstract: In order to develop an electrochemical sensing system for bisphenol A, molecularly imprinted polymer (MIP) thin layers for bisphenol A were polymerized on a sputtered gold electrode by UV light irradiation for 2 – 30 min. Their thickness, which was determined by QCM analyzer, was 3.6 ± 0.3 nm for 5min of irradiation and increased as the irradiation time increase to 30 min. AFM images of MIP modified surface suggested that the gold electrode was covered with MIP smooth layer. The responses to BPA and ascorbic acid of the gold electrode and MIP modified electrode were examined by cyclic voltammogram, and their anodic peaks were compared. The electrode with MIP polymerized for 5min showed more selective to BPA than that for 2min. This electrode can be served as BPA sensor and the anodic current of BPA depended on its concentration at the range of 5-15 μM.
Template and target information: bisphenol A, BPA
Author keywords: Anodic Current, ascorbic acid, bisphenol A, electrode, molecularly imprinted polymer, Thin Layer