A Novel Electrochemical Sensor Based on Carbon Dots-Nafion Composite Modified Bismuth Film Electrode for Simultaneous Determination of Cd2+ and Pb2+

2021 ◽  
Vol MA2021-01 (57) ◽  
pp. 1549-1549
Author(s):  
Hao Zhang ◽  
Dayang Yu ◽  
Zehua Ji ◽  
Yuansheng Pei
Keyword(s):  
Electrochemical Sensor ◽  
Simultaneous Determination ◽  
Carbon Dots ◽  
Film Electrode ◽  
Bismuth Film ◽  
Bismuth Film Electrode

A Novel Electrochemical Sensor Based on Carbon Dots-Nafion Composite Modified Bismuth Film Electrode for Simultaneous Determination of Cd2+ and Pb2+

2020 ◽  
Vol MA2020-01 (29) ◽  
pp. 2205-2205
Author(s):  
Hao Zhang ◽  
Dayang Yu ◽  
Zehua Ji ◽  
Yuansheng Pei
Keyword(s):  
Electrochemical Sensor ◽  
Simultaneous Determination ◽  
Carbon Dots ◽  
Film Electrode ◽  
Bismuth Film ◽  
Bismuth Film Electrode

scholarly journals Direct Electrodeposition of Carbon Dots Modifying Bismuth Film Electrode for Sensitive Detection of Cd2+ and Pb2+

2022 ◽  
Author(s):  
Hao Zhang ◽  
Jun Cui ◽  
Yuxin Zeng ◽  
Yu Zhang ◽  
Yuansheng Pei
Keyword(s):  
Simultaneous Determination ◽  
Carbon Dots ◽  
Metal Ion ◽  
High Sensitivity ◽  
Underground Water ◽  
Film Electrode ◽  
Bismuth Film ◽  
Bismuth Film Electrode ◽  
Relative Standard

Abstract A sensitive, selective, and stable sensor for the simultaneous determination of Cd2+ and Pb2+ in aqueous solution has been developed based on the carbon dots (CDs) and Nafion-modified bismuth film glassy carbon electrode (GCE). High graphitized CDs prepared by the sulfuric acid-assisted hydrothermal synthesis were directly electrodeposited on the GCE surface by cyclic voltammetry. Compared with the conventional bismuth film electrodes, CDs greatly improved the electrochemical activity of the bismuth film electrode for the detection of Cd2+ and Pb2+. After decorating CDs, the surface impedance of the GCE was decreased from 10.9 kΩ to 4.84 kΩ. Meanwhile, the corresponding response currents of the Bi/GCE were increased over 7.4 and 2.4 times for Cd2+ and Pb2+ with a wide linear range of 0.05-0.50 mg/L, respectively. High sensitivity was obtained with the detection limits of 3.1 μg L-1 (Cd2+) and 2.3 μg L-1 (Pb2+). Moreover, good stability was obtained for the simultaneous determination of Cd2+ and Pb2+ in the practical underground water with the relative standard deviations less than 10%. The results indicated that the CDs-modified bismuth film electrode could potentially be applied to detect the heavy metal ion concentrations in practical environment.

Sensitive electrochemical sensor for the determination of folic acid based on a bismuth-film electrode

2016 ◽  
Vol 148 (3) ◽  
pp. 423-433 ◽  
Author(s):  
Michaela Štěpánková ◽  
Renáta Šelešovská ◽  
Lenka Janíková ◽  
Jaromíra Chýlková ◽  
Ivan Švancara
Keyword(s):  
Folic Acid ◽  
Electrochemical Sensor ◽  
Film Electrode ◽  
Bismuth Film ◽  
Bismuth Film Electrode

A mercury-free electrochemical sensor for the determination of thallium(I) based on the rotating-disc bismuth film electrode

Talanta ◽  
2007 ◽  
Vol 72 (4) ◽  
pp. 1392-1399 ◽  
Author(s):  
E JORGE ◽  
M NETO ◽  
M ROCHA
Keyword(s):  
Electrochemical Sensor ◽  
Film Electrode ◽  
Bismuth Film ◽  
Rotating Disc ◽  
Bismuth Film Electrode

A pencil-lead bismuth film electrode and chemometric tools for simultaneous determination of heavy metals in propolis samples

2016 ◽  
Vol 125 ◽  
pp. 266-272 ◽  
Author(s):  
Gastón D. Pierini ◽  
Marcelo F. Pistonesi ◽  
María S. Di Nezio ◽  
María E. Centurión
Keyword(s):  
Heavy Metals ◽  
Simultaneous Determination ◽  
Film Electrode ◽  
Bismuth Film ◽  
Bismuth Film Electrode ◽  
Pencil Lead ◽  
Chemometric Tools

Simultaneous Determination of Copper(II), Lead(II) and Zinc(II) at Bismuth Film Electrode by Multivariate Calibration

2011 ◽  
Vol 23 (6) ◽  
pp. 1410-1417 ◽  
Author(s):  
Georgina M. S. Alves ◽  
Júlia M. C. S. Magalhães ◽  
Helena M. V. M. Soares
Keyword(s):  
Simultaneous Determination ◽  
Multivariate Calibration ◽  
Film Electrode ◽  
Bismuth Film ◽  
Bismuth Film Electrode ◽  
Determination Of Copper
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