Title
Electrodeposition of Pd-Pt Nanocomposites on Porous GaN for Electrochemical Nitrite Sensing.
Abstract
In recent years, nitrite pollution has become a subject of great concern for human lives, involving a number of fields, such as environment, food industry and biological process. However, the effective detection of nitrite is an instant demand as well as an unprecedented challenge. Here, a novel nitrite sensor was fabricated by electrochemical deposition of palladium and platinum (Pd-Pt) nanocomposites on porous gallium nitride (PGaN). The obtained Pd-Pt/PGaN sensor provides abundant electrocatalytic sites, endowing it with excellent performances for nitrite detection. The sensor also shows a low detection limit of 0.95 mu M, superior linear ampere response and high sensitivity (150 mu A/mM for 1 to 300 mu M and 73 mu A/mM for 300 to 3000 mu M) for nitrite. In addition, the Pd-Pt/PGaN sensor was applied and evaluated in the determination of nitrite from the real environmental samples. The experimental results demonstrate that the sensor has good reproducibility and long-term stability. It provides a practical way for rapidly and effectively monitoring nitrite content in the practical application.
Year
DOI
Venue
2019
10.3390/s19030606
SENSORS
Keywords
Field
DocType
porous GaN,electrodeposition,Pd-Pt nanocomposites,nitrite detection
Gallium nitride,Detection limit,Nanotechnology,Analytical chemistry,Nitrite,Porosity,Platinum,Nanocomposite,Palladium,Engineering,Electrochemistry
Journal
Volume
Issue
ISSN
19
3
1424-8220
Citations 
PageRank 
References 
0
0.34
0
Authors
7
Name
Order
Citations
PageRank
Rui Xi100.34
Shao-Hui Zhang200.34
Long Zhang320.72
Chao Wang400.68
Lu-Jia Wang500.34
Jing-Hui Yan620.75
Ge-Bo Pan720.75