Au nanoparticle modified carbon paper electrode for an electrocatalytic oxidation nitrite sensor

Abstract

A AuNPs/CP electrode was fabricated by an electrodeposition technique. The highest electrocatalytic activity for nitrite oxidation was obtained with the 35 consecutive cycles modified electrode.

Defect Mediated W18O49 Nanorods Bundle for Nonenzymatic Amperometric Glucose Sensing Application

“…The carbon paper as a backing support improves the mobility of charge carrier resulted to enhance the conductivity of the electrode. 53 The comparison of the sensitivity result of other reported nanostructure is provided in Table 1 which it is evident that the W 18 O 49 nanorods bundle presented in current research work exhibited the best sensing characteristics with a wider linear range.…”

Coumarin-pyridone conjugate as a fluorescent tag for LFPs visualization and electrochemical sensor for nitrite detection

“…Nitrite ions can react with blood pigments to form methemoglobin, which prevents oxygen from reaching tissues, resulting in serious disorders like shortness of breath and ''blue baby syndrome''. [21][22][23][24] In addition, they may react with amines and amides in the stomach to form extremely carcinogenic Nnitrosamine compounds, with a lethal dose of nitrite via ingestion ranging from 8.7 to 28.3 M. 25,26 The determination of nitrites is crucial for the environment and public health because of their potential toxicity. According to the World Health Organization, the maximum nitrite concentration in drinking water should be 3 mg L À1 , and the lethal dose of nitrite consumption is between 8.7 and 28.3 mM.…”

Electrochemical Determination of Nitrite by Au Nanoparticle/Graphene-Chitosan Modified Electrode

“…Since then, the modification of working electrodes by nanomaterials has attracted the attention of researchers [ 19 , 20 , 21 ]. In particular, Au nanoparticles are widely used for the determination of nitrite due to their biocompatibility, unique structures, excellent conductivity and great electrocatalytic ability [ 22 , 23 ]. For example, Jiang et al made a biosensor with graphene and gold nanoparticles to detect NO 2 − .…”