Hydrogen peroxide sensor based on Prussian blue electrodeposited on (3-mercaptopropyl)-trimethoxysilane polymer-modified gold electrode |
| |
Authors: | Yu Zhang Hong Qun Luo Nian Bing Li |
| |
Institution: | (1) Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, People’s Republic of China; |
| |
Abstract: | A hydrogen peroxide (H2O2) sensor was developed by electrodepositing Prussian blue (PB) on a gold electrode modified with (3-mercaptopropyl)-trimethoxysilane
(MPS) polymer. The characterization of the self-assembled electrode was investigated by cyclic voltammetry and electrochemical
impedance spectroscopy. The results of electrochemical experiments showed that such constructed sensor had a favorable catalytic
ability to reduce H2O2. The MPS film on the modified gold electrode greatly enhanced the pH-adaptive range of PB. Large surface-to-volume ratio
property of double-layer 2d-network MPS-modified PB electrode enabled stable and highly sensitive performance of the non-enzymatic
H2O2 sensor. The linear range of H2O2 determined is from 2.0 × 10−6 to 2.0 × 10−4 mol L−1 with a correlation coefficient of 0.9991 and a detection limit for H2O2 of 1.8 × 10−6 mol L−1. The influences of the potentially interfering substances on the determination of H2O2 were investigated. This modified electrode exhibits a good selectivity and high sensitivity with satisfactory results. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |