Individual and Simultaneous Voltammetric Determination of Cd(II), Cu(II) and Pb(II) Applying Amino Functionalized Fe 3 O 4 @Carbon Microspheres Modified Electrode

2019 ◽  
Vol 31 (8) ◽  
pp. 1448-1457 ◽  
Author(s):  
Fan Bai ◽  
Xinhao Zhang ◽  
Xinmei Hou ◽  
Huijuan Liu ◽  
Junhong Chen ◽  
...  
Keyword(s):  
Modified Electrode ◽  
Voltammetric Determination ◽  
Carbon Microspheres ◽  
Simultaneous Voltammetric Determination

scholarly journals ZIF-67/g-C3N4-Modified Electrode for Simultaneous Voltammetric Determination of Uric Acid and Acetaminophen with Cetyltrimethylammonium Bromide as Discriminating Agent

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Huynh Truong Ngo ◽  
Le Thi Hoa ◽  
Nguyen Tan Khanh ◽  
Tran Thi Bich Hoa ◽  
Tran Thanh Tam Toan ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Uric Acid ◽  
Modified Electrode ◽  
Photoelectron Spectroscopy ◽  
Cetyltrimethylammonium Bromide ◽  
Voltammetric Determination ◽  
Electrochemical Kinetics ◽  
X Ray ◽  
Simultaneous Voltammetric Determination

In the present paper, the ZIF-67/g-C3N4 composite was synthesized and utilized as a modifier for a glassy carbon electrode for the simultaneous voltammetric determination of uric acid (URA) and acetaminophen (ACE) with cetyltrimethylammonium bromide (CTAB) as a discriminating agent. The composite was characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and nitrogen adsorption/desorption isotherms. The obtained ZIF-67/g-C3N4 composite exhibits good textural properties (specific surface area: 75 m2·g−1) and is stable in water with a pH range of 3 to 10. The ZIF-67/g-C3N4-modified electrode combined with CTAB as a discriminating agent possesses excellent catalytic electrochemistry towards URA and ACE with well-defined electrochemical responses. The electrochemical kinetics study is also addressed. The linear relation of the oxidation peak current of URA and ACE and the concentration ranging from 0.2 μM to 6.5 μM provide a detection limit of 0.052 μM for URA and 0.053 μM for ACE. The proposed method is well-suited to simultaneously analyze URA and ACE in human urine with comparable results with HPLC.

Differential Pulse Voltammetric Determination of Piroxicam on Lanthanide Ferric Oxide Nanoparticles-Carbon Paste Modified Electrode

2018 ◽  
Vol 14 (3) ◽  
pp. 271-276 ◽  
Author(s):  
Isaac Yves Lopes de Macedo ◽  
Morgana Fernandes Alecrim ◽  
Luane Ferreira Garcia ◽  
Aparecido Ribeiro de Souza ◽  
Wallans Torres Pio dos Santos ◽  
...  
Keyword(s):  
Modified Electrode ◽  
Ferric Oxide ◽  
Differential Pulse ◽  
Voltammetric Determination ◽  
Oxide Nanoparticles ◽  
Carbon Paste ◽  
Carbon Paste Modified Electrode
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