Communication—In Situ Electrodeposition of Nickel Phosphide on Ni Foam for Non-Enzymatic Detection of Nitrite
Shun Lu, Matthew Hummel, Xiaomei Wang, Wei He, Rajesh Pathak, Xiuxiu Dong, Hongxing Jia, Zhengrong Gu
Abstract
An electrochemical sensor toward nitrite based on Ni foam supported nickel phosphide (NiP/NF) electrode was successfully fabricated via an in situ electrodeposition strategy. The sensor has exhibited great electrochemical detection ability with a sensitivity of 1.56 × 10 −4 mA μ M −1 , a linear range from 0.1 to 4000 μ M and a detection limit of 0.01 μ M (s/n = 3). Moreover, good stability of the electrodeposited electrode can be ascribed to the in situ growth of NiP onto Ni foam to achieve a binder-free electrode. The good recovery achieved for nitrite detection in several water samples also reveals its promising practicality.
Topics & Concepts
PhosphideElectrodeNickelDetection limitNitriteMaterials scienceElectrochemistryLinear rangeNIPIn situChemical engineeringChemistryMetallurgyComposite materialChromatographyOrganic chemistryEngineeringNitratePhysical chemistryElectrochemical Analysis and ApplicationsElectrochemical sensors and biosensorsElectrocatalysts for Energy Conversion