Using Ionic Polymer Metal Composite (IPMC)based Devices for Naked-eye Sensing of Thiocyanate Ion (SCN-)

摘要

This work introduces the concept of a novel thiocyanate ion (SCN-) detecting device. We show proof-of-principle of the device, namely IPMC film prepared by surface modification of the ionic-polymer film. In this work, naked-eye detection of thiocyanate ion (SCN-) by using iron exchanged ionic polymer-metal composites (IPMC) strip has been achieved. It was successfully applied to direct determination of thiocyanate at micro-molar level in water samples. The response time of the sensor in whole concentration ranges is very short (10 s). The response of the sensor is independent on the pH range of 2-10.