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- Title
A Palladium-Tin Modified Microband Electrode Array for Nitrate Determination.
- Authors
Yexiang Fu; Chao Bian; Jian Kuang; Jinfen Wang; Jianhua Tong; Shanhong Xia
- Abstract
A microband electrode array modified with palladium-tin bimetallic composite has been developed for nitrate determination. The microband electrode array was fabricated by Micro Electro-Mechanical System (MEMS) technique. Palladium and tin were electrodeposited successively on the electrode, forming a double-layer structure. The effect of the Pd-Sn composite was investigated and its enhancement of catalytic activity and lifetime was revealed. The Pd-Sn modified electrode showed good linearity (R2 = 0.998) from 1 mg/L to 20 mg/L for nitrate determination with a sensitivity of 398 μA/(mg·L-1·cm2). The electrode exhibited a satisfying analytical performance after 60 days of storage, indicating a long lifetime. Good repeatability was also displayed by the Pd-Sn modified electrodes. The results provided an option for nitrate determination in water.
- Subjects
ELECTRODES; ELECTROPLATING; SENSITIVITY analysis; CATALYTIC activity; NITRATES
- Publication
Sensors (14248220), 2015, Vol 15, Issue 9, p23249
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s150923249