Sensing of phenol and chlorophenols using carbon nanotubes modified glassy carbon electrode

Silah, Hülya; Erkmen, Cem; Ünal, Didem Nur; Uslu, Bengi

doi:10.1016/b978-0-323-90553-4.00015-9

Cited by 1 publication

(3 citation statements)

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“…From the previous drawing curve, it finds that the scan rate of phenol is 100 (mv.sec -1 ) 1/2 at pH (7,4). Under potential-dynamic conditions for an A irreversible process, the shift in ip per a ten-fold increase in scan rate.…”

Section: Effect Of the Scan Ratementioning

confidence: 94%

“…Phenol is an aromatic organic compound [1][2], it has the formula C 6 H 6 O [3], phenolic compounds are widely found in water, soil, and air. These compounds are not biodegradable [4], which are dangerous compounds, it is found everywhere in the environment, including in aerosols due to combu s tion emissions [5]. It is very toxic [6][7][8], phenol and its derivatives are pollutants [9], when a person is exposed to phenol for long periods, it enters his body through inhalation, inge s tion, or through direct contact with the skin, and causes severe damage such as: including damage to the liver, kidneys, urinary and reproductive tracts, lungs, shortness of breath, neurological problems, severe abdominal pain, irritation of the dige s tive sy s tem, nausea, vomiting, diarrhea, and sweating, Coma and death.…”

Section: Introductionmentioning

confidence: 99%

“…Fig.6. Effect of scan rates of (10, 30, 50, 70, 90, 100) mv.s -1 for 1 mM phenol using KH 2 PO4 buffer using the proposed electrode (NiO-NCQD/MCPE): A) pH= 7; B) pH= 4; C) Effect of scan rates of (mv/sec) 1/2 / v 1/2 vs ip at pH=( 4,7) …”

mentioning

confidence: 99%

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Modified carbon paste electrode based on nanotechnology for determining phenol in the liquid solutions by cyclic voltammetry and comparing to high-performance liquid Chromatography

Alabid

Nasser

2023

Anal. Method Environ. Chem. J.

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In this paper, phenol was determined in a liquid solution based on fabricating a phenol-selective electrode by cyclic voltammetry (CV). The carbon paste electrode was modified with nickel oxide nanoparticles (NiO) which were doped with nitrogen carbon quantum dots (NCQD) as the NiO-NCQD nanocomposite. The modified carbon paste electrode was manufactured in a laboratory at optimized pH. In the optimized condition, the best results were created at pH 7.0 and 4.0 using KH2PO4 buffer solution. By voltammetry, the voltage was optimized, and the best value for the voltages was obtained at 0.04166V and 0.05991V for pH 4 and 7, respectively. The scan rate (SR) was studied and the best SR was achieved at 100 mv s-1 for both pH. Due to the results, a wide linear dynamic range between 10 to 1000 μM was obtained. Also, the standard phenol solution was analyzed by high-performance liquid chromatography (HPLC). The retention time (RT), the wavelength maximum (λ max: nm), and the peak area equation of HPLC were achieved at 2.982 min, 270 nm, and (Area=40420CPhenol+ 43.557), respectively by the concentration range of 0.1-5.0 mg L-1. The NiO-NCQD adsorbent determined phenol by cyclic voltammetry and compared it with the HPLC technique.

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Section: Effect Of the Scan Ratementioning

confidence: 94%