Electrochemical study of Alamar Blue (resazurin) in aqueous solutions and room-temperature ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate at a glassy carbon electrode

RSC Advances ◽  
2014 ◽  
Vol 4 (17) ◽  
pp. 8431-8438 ◽  
Author(s):  
Sadegh Khazalpour ◽  
Davood Nematollahi
Keyword(s):  
Ionic Liquid ◽  
Aqueous Solutions ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Room Temperature ◽  
Electrochemical Behaviour ◽  
Carbon Surface ◽  
Carbon Electrode ◽  
Alamar Blue ◽  
Glassy Carbon Surface

Electrochemical behaviour of resazurin in aqueous buffered solutions and ionic liquid was studied. The orientation of adsorbed resazurin was estimated. It is found that, the orientation of the adsorbed resazurin at glassy carbon surface is edgewise.

scholarly journals Electrochemical Behaviour of a Gold Film- Glassy Carbon Electrode for Determination of Chromium (VI)

2021 ◽  
Author(s):  
Nevila Broli ◽  
Loreta Vallja ◽  
Majlinda Vasjari
Keyword(s):  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Electrochemical Behaviour ◽  
Supporting Electrolyte ◽  
Anodic Stripping Voltammetry ◽  
Carbon Electrode ◽  
Modulation Amplitude ◽  
Chromium Vi ◽  
Relative Standard

A gold nanostructured film modified glassy carbon electrode (Aufilm/GCE) was developed for the determination of chromium (VI) in water sample. GCE was immersed into HAuCl4 solution (10-3M) and electrodeposition of thin gold layer was conducted at –0.4 V (vs Ag/AgCl) for 10 min. The strong affinity between Au and Cr species resulted with increasing of Cr (VI) signal, compared with the bare glassy carbon electrode. The electrodepositing time, type of supporting electrolyte, pH, the scan rate, modulation amplitude, and modulation time were optimized using differential pulse anodic stripping voltammetry (DP-ASV). The calibration graph using accumulation time of 120 s was linear from 10 to 120 µgL-1 with a sensitivity 1.3 x 10-2 µA/µgL-1. Under optimum experimental conditions, a good correlation coefficient R2=0.9971, and a low detection limit 5.5 µg/L Cr (VI) was obtained. The signal was reproducible with a relative standard deviation ±4.5 %. The developed Aufilm/GCE sensor was applied for the Cr (VI) determination of in sewage water samples.

Preparation of Ag@zeolitic imidazolate framework-67 at room temperature for electrochemical sensing of hydrogen peroxide

The Analyst ◽  
2019 ◽  
Vol 144 (2) ◽  
pp. 521-529 ◽  
Author(s):  
Yuhua Dong ◽  
Chengqian Duan ◽  
Qinglin Sheng ◽  
Jianbin Zheng
Keyword(s):  
Hydrogen Peroxide ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Room Temperature ◽  
Electrochemical Sensing ◽  
Carbon Electrode ◽  
Zeolitic Imidazolate Framework ◽  
Simple Method ◽  
Hydrogen Peroxide Sensor

In this work, a novel non-enzymatic hydrogen peroxide sensor, Ag@zeolitic imidazolate framework-67 (Ag@ZIF-67)/glassy carbon electrode (GCE), was fabricated by a simple method at room temperature.

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