A MnOOH‐Polyaniline Nanocomposite Modified Gold Electrode for Electrochemical Sensing of Nitrite. Issue 8 (2nd June 2017)

• Record Type: Journal Article
• Authors: Shen, Yu; Zhang, Jian; Sheng, Qinglin; Zheng, Jianbin
• Is Part Of: Chinese journal of chemistry. Volume 35:Issue 8(2017)
• Page Start: 1317
• Page End: 1321
• Publication Date: 2017-06-02
• Subjects: electrochemical sensor -- nanocomposites -- polyaniline -- MnOOH -- nitrite; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cjoc.201600892
• Languages: English
• ISSNs: 1001-604X

Abstract

Abstract : A novel non‐enzymatic nitrite sensor was fabricated by immobilizing MnOOH‐PANI nanocomposites on a gold electrode (Au electrode). The morphology and composition of the nanocomposites were investigated by transmission electron microscopy (TEM) and Fourier transform infrared spectrum (FTIR). The electrochemical results showed that the sensor possessed excellent electrocatalytic ability for NO2 − oxidation. The sensor displayed a linear range from 3.0 μmolL −1 to 76.0 mmolL −1 with a detection limit of 0.9 μmolL −1 (S/N = 3), a sensitivity of 132.2 μALmol −1 cm −2 and a response time of 3 s. Furthermore, the sensor showed good reproducibility and long‐term stability. It is expected that the MnOOH‐PANI nanocomposites could be applied for more active sensors and used in practice for nitrite sensing. Abstract : A novel non‐enzymatic nitrite sensor based on MnOOH‐PANI nanocomposites was fabricated and used for electrochemical sensing of nitrite.