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Bismuth nanodendrites deposited on glassy carbon electrode as a sensitive electrochemical sensor for simultaneous detection of Cd 2+ and Pd 2+ ions
Author(s) -
Anh Nguyen Hoang,
Duy Pham Khac,
Yen Pham Thi Hai,
Dang Vu Hai,
Giao Nguyen Quynh,
Ha Vu Thi Thu
Publication year - 2018
Publication title -
vietnam journal of chemistry
Language(s) - English
Resource type - Journals
eISSN - 2572-8288
pISSN - 0866-7144
DOI - 10.1002/vjch.201800032
Subject(s) - bismuth , electrochemistry , electrode , materials science , glassy carbon , scanning electron microscope , ion , analytical chemistry (journal) , carbon fibers , inorganic chemistry , chemical engineering , cyclic voltammetry , chemistry , metallurgy , chromatography , composite material , organic chemistry , composite number , engineering
In this study, bismuth nanodendrites (BiNDs) were fabricated on glassy carbon electrode by chronopotentiometric method. The hierarchical structure and high population matrix of BiNDs provides high surface active area to enhance the electrochemical signals of measured Cd 2+ and Pb 2+ ions. The developed bismuth nanodendritic structure was well‐observed and characterzied by scanning electron microscopy (SEM). Electrochemical behaviours of developed BiNDs electrodes were studied by the cyclic voltammetric (CV) method. The fabrication conditions for BiNDs such as the applied current and deposition time were optimized as ‐10 mA and 90 s, respectively. Under this optimized condition, the highest peaks of Cd 2+ and Pb 2+ ions at concentration of 20 ppb were obtained. The Cd 2+ and Pb 2+ signals acquired by BiNDs are almost three times greater than that measured by the Bi film electrode.