Graphene Oxide Electroreduced onto Boron-Doped Diamond and Electrodecorated with Silver (Ag/GO/BDD) Electrode for Tetracycline Detection in Aqueous Solution

被引：14
作者：
Negrea, Sorina [1 ,2 ]
Diaconu, Lidia Ani [1 ]
Nicorescu, Valeria [1 ]
Motoc , Sorina [3 ]
Orha, Corina [4 ]
Manea, Florica [5 ]
机构：
[1] Natl Inst Res & Dev Ind Ecol INCD ECOIND, Timisoara Branch, Timisoara 300431, Romania
[2] Gheorghe Asachi Tech Univ Iasi, Dept Environm Engn & Management, Iasi 700050, Romania
[3] Romanian Acad, Coriolan Dragulescu Inst Chem, Mihai Viteazul 24, Timisoara 300223, Romania
[4] Inst Res & Dev Electrochem & Condensed Matter, Natl Condensed Matter Dept, 1 P Andronescu St, Timisoara 300254, Romania
[5] Politehn Univ Timisoara, Fac Ind Chem & Environm Engn, P Ta Victoriei 2, Timisoara 300006, Romania
来源：
NANOMATERIALS | 2021年 / 11卷 / 06期
关键词：
silver electrocatalyst; tetracycline; electrochemical detection; silver-graphene oxide-boron-doped diamond; WALL CARBON NANOTUBE; ELECTROCHEMICAL DETERMINATION; SENSOR; ANTIBIOTICS; ENVIRONMENT; REMOVAL; WATER; IONS;
D O I：
10.3390/nano11061566
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A new electrochemical sensor designed by modifying the commercial boron-doped diamond (BDD) electrode with graphene oxide (GO) reduced electrochemically and further electrodecorated with silver (Ag), named the Ag/GO/BDD electrode, was selected among a series of the BDD, GOelectroreduced onto BDD (GO/BDD) and silver electrodeposited onto BDD (Ag/BDD) electrodes for the detection of tetracycline (TC) in aqueous solution. The best results regarding the sensitivity of 46.6 mu A center dot mu M-1 center dot cm(-2) and the lowest limit of detection of 5 nM was achieved using square-wave voltammetry (SWV) operated at the step potential of 5 mV, modulation amplitude of 200 mV and the frequency of 10 Hz in alkaline medium. The application of the alkaline supporting electrolyte-based procedure is limited for water monitoring due to the presence of chloride that interferes with TC detection; however, it can be applied for quantitative determination of pharmaceutical formulations. 0.1 M Na2SO4 supporting electrolyte eliminated chloride interference and can be used for the application of Ag/GO/BDD in practical detection of TC in water.
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页数：19
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