2018
DOI: 10.1007/s00604-018-2715-8
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Amperometric determination of nitrite using natural fibers as template for titanium dioxide nanotubes with immobilized hemin as electron transfer mediator

Abstract: A sensing device was constructed for the amperometric determination of nitrite. It is based on the use of titanium dioxide (TiO) nanotubes template with natural fibers and carrying hemin acting as the electron mediator. A glassy carbon electrode (GCE) was modified with the hemin/TNT nanocomposite. The electrochemical response to nitrite was characterized by impedance spectroscopy and cyclic voltammetry. An amperometric study, performed at a working potential of + 0.75 V (vs. Ag/AgCl), showed the sensor to enab… Show more

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Cited by 18 publications
(5 citation statements)
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“…At present, nitrite has been widely found in various environmental water such as lake water, ground water, and so on . Excessive levels of nitrite in drinking water lead to many diseases, such as hypertension, spontaneous abortions, and birth defects . To protect human health and ecological balance, the Environmental Protection Agency (EPA) permits the maximum level of nitrite in drinking water to be 1 ppm (ca.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…At present, nitrite has been widely found in various environmental water such as lake water, ground water, and so on . Excessive levels of nitrite in drinking water lead to many diseases, such as hypertension, spontaneous abortions, and birth defects . To protect human health and ecological balance, the Environmental Protection Agency (EPA) permits the maximum level of nitrite in drinking water to be 1 ppm (ca.…”
Section: Introductionmentioning
confidence: 99%
“…However, they suffer from some limitations including relatively expensive instruments, time‐consuming pre‐processing, and complicated operations, which prevent their practical applications. Compared with these methods, electrochemical techniques have many merits, such as fast response, simple operation, ease of miniaturization, and low cost . Therefore, electrochemical sensor for detection of nitrite has recently attracted wide interest from researchers.…”
Section: Introductionmentioning
confidence: 99%
“…A comparison on sensing performances between reported electrodes and NaCS/PDMDAAC/GCE is summarized on the Table 1 . The sensing performances (in terms of linear response range and limit of detection) of the NaCS/PDMDAAC/GCE are at least comparable to, and even better than, the most reported modified electrodes [ 45 , 46 , 47 , 48 , 49 , 50 ].…”
Section: Resultsmentioning
confidence: 73%
“…Furthermore, the electron transfer between electrode and electrolyte of the AgNPs@PANI/ rGO/GCE was investigated by using electrochemical impedance spectroscopy studies. 36 The EIS studies of AgNPs@PANI/rGO/GCE were carried out in a solution containing 10 mM [Fe(CN) 6 ] 3−/4− and 0.1 M KNO 3 with a frequency range of 0.1 Hz to 10 5 Hz (amplitude 5 mV) as shown in Fig. 3b.…”
Section: [ ] /mentioning
confidence: 99%