关键词: 电化学传感器, 激光刻蚀, 聚酰亚胺, Cu_xO复合材料, 葡萄糖, 非酶法

Abstract: In this work, a novel electrode substrate with graphene-like surface and Cu_xO nanocomposites derived from secondary-laser-etched polyimide (SLEPI) film was synthesized and applied in non-enzymatic glucose detection for the first time. Characterizations indicate that the as-prepared SLEPI/Cu_xO film electrode (SLEPI/Cu_xO-FE) possessed huge surface area, plentiful active sites and excellent electrocatalytic performance. The obtained sensor exhibited the high sensitivity and selectivity for glucose determination with a linear range of 0.05 mmol·L^-1 to 3 mmol·L^-1 and a detection limit of 1.72 μmol·L^-1 (S/N=3), which provides a simple, flexible and low-cost electrochemical sensor for diabetes diagnosis.

Key words: electrochemical sensor, laser-etched, polyimide, Cu_xO nanocomposite, glucose, non-enzymatic