One step synthesis cadmium sulphide/reduced graphene oxide sandwiched film modified electrode for simultaneous electrochemical determination of hydroquinone, catechol and resorcinol

RSC Advances ◽  
2015 ◽  
Vol 5 (24) ◽  
pp. 18615-18621 ◽  
Author(s):  
Shirong Hu ◽  
Wuxiang Zhang ◽  
Jianzhong Zheng ◽  
Jiangu Shi ◽  
Zhongqiu Lin ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Modified Electrode ◽  
Modified Electrodes ◽  
Cadmium Sulphide ◽  
Electrochemical Determination ◽  
Reduced Graphene ◽  
One Step

In this work, a novel sandwiched film of cadmium sulphide/reduced graphene oxide (CdS/r-GO) was synthesized and the modified electrodes were successfully used to simultaneously determine hydroquinone (HQ), catechol (CC) and resorcinol (RC).

scholarly journals Reduced Graphene Oxide/Ruthenium Oxide Hexacyanoferrate Nanocomposite for Electrochemical Determination of Ethanol in Commercial Samples

2021 ◽  
Author(s):  
Pedro Borges ◽  
Edson Nossol
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Modified Electrode ◽  
Ruthenium Oxide ◽  
Electrochemical Determination ◽  
Material Structure ◽  
Spectroscopic Techniques ◽  
Reduced Graphene ◽  
Electrochemical Approach

Reduced graphene oxide/ruthenium oxide hexacyanoferrate (rGO/RuOHCF) modified electrode showed synergic activity between the materials attested by the increase of electrochemical current and stability. The preparation of the nanocomposite was made by a simple two-step electrochemical approach. The material structure was characterized by spectroscopic techniques (Raman, infrared and energy-dispersive X-ray) as well as its morphology by scanning electron microscopy and compared to the analogously prepared reduced graphene oxide (rGO) and ruthenium oxide hexacyanoferrate (RuOHCF) thin films spectra and images. The results suggest that the improvement of the nanocomposite electrochemical activity is generated by the well-distributed RuOHCF nanometric particles over high-surfaced graphene sheets. Ethanol electrochemical oxidation in the rGO/RuOHCF modified electrode was performed in 0.1 mol L-1 NaCl (pH = 1.5) solution and it showed an anodic current peak starting at 0.9 V. Scan rate tests exhibited a diffusioncontrolled process not followed by any coupled chemical reaction. The determination of ethanol by amperometry coupled with batch injection analysis (BIA) system resulted in a wide linear range (20-400 mmol L-1) and good sensitivity (0.150 μA L mmol-1). The nanocomposite also showed application as an electrochemical sensor of ethanol in commercial samples mainly because of its easy preparation comparing to biosensors.

Highly sensitive simultaneous electrochemical determination of hydroquinone, catechol and resorcinol based on carbon dot/reduced graphene oxide composite modified electrodes

2015 ◽  
Vol 7 (15) ◽  
pp. 6089-6094 ◽  
Author(s):  
Wuxiang Zhang ◽  
Jianzhong Zheng ◽  
Zhongqiu Lin ◽  
Ling Zhong ◽  
Jiangu Shi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Modified Electrodes ◽  
Electrochemical Determination ◽  
Schematic Diagram ◽  
Carbon Dot ◽  
Oxide Composite ◽  
Reduced Graphene ◽  
Highly Sensitive

A schematic diagram of the preparation processes of CD/r-GO and the CD/r-GO electrode used for the detection of dihydroxybenzene isomers.

Ecofriendly preparation of graphene sheets decorated with an ethylenediamine copper(ii) complex composite modified electrode for the selective detection of hydroquinone in water

2018 ◽  
Vol 5 (2) ◽  
pp. 490-500 ◽  
Author(s):  
Subramanian Sakthinathan ◽  
Thangavelu Kokulnathan ◽  
Shen-Ming Chen ◽  
Raj Karthik ◽  
Te-Wei Chiu
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Modified Electrode ◽  
Electrochemical Determination ◽  
Graphene Sheets ◽  
Selective Detection ◽  
Reduced Graphene ◽  
Ethylenediamine Complex

A reduced graphene oxide decorated copper(ii) ethylenediamine complex composite modified electrode was applied for the electrochemical determination of hydroquinone.

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