A Visible-Light Driven Photoelectrochemical Aptasensor for Endocrine Disrupting Chemicals Bisphenol A with High Sensitivity and Specificity

作者：Zhang, Yingying; Cao, Tongcheng^*; Huang, Xiaofeng; Liu, Meichuan; Shi, Huijie; Zhao, Guohua

来源：Electroanalysis, 2013, 25(7): 1787-1795.

DOI：10.1002/elan.201300057

• Visible-light driven photoelectrochemical sensor
• Aptamer
• TiO2-Fe2O3 nanotubes
• Specific detection
• Bisphenol A

A visible-light driven photoelectrochemical (PEC) sensor based on aptamer immobilized TiO2-Fe2O3 nanotubes was proposed for the first time and highly sensitive and selective bisphenol A determination was realized. Taking advantage of the alloy oxide nanotube structure, high surface area, good biocompatibility, superior photoelectrocatalytic performance, a limit of detection toward BPA as low as 1.8x10(-11)M with linearity in the range from 1.8x10(-11) to 3.2x10(-9)M could be achieved. Specificity was greatly exhibited for this aptasensor under 100-fold excess concentration of estriol, resorcinol, nonylphenol, 2,4-D, acetamiprid, chlorpyrifos and omethoate. Simultaneously, satisfactory results were obtained in real water sample investigation from industrial plastics and drinking water. A novel visible-light driven PEC method for highly sensitive and selective detection of BPA was thus established.

• 出版日期2013-7
• 单位同济大学