Green reduction of reduced graphene oxide with nickel tetraphenyl porphyrin nanocomposite modified electrode for enhanced electrochemical determination of environmentally pollutant nitrobenzene

2017 ◽  
Vol 497 ◽  
pp. 207-216 ◽  
Author(s):  
Subbiramaniyan Kubendhiran ◽  
Subramanian Sakthinathan ◽  
Shen-Ming Chen ◽  
P. Tamizhdurai ◽  
K. Shanthi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Modified Electrode ◽  
Electrochemical Determination ◽  
Reduced Graphene ◽  
Tetraphenyl Porphyrin

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.

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.

Preparation of β-cyclodextrin functionalized reduced graphene oxide: application for electrochemical determination of paracetamol

RSC Advances ◽  
2015 ◽  
Vol 5 (94) ◽  
pp. 76973-76978 ◽  
Author(s):  
Li Fu ◽  
Guosong Lai ◽  
Aimin Yu
Keyword(s):  
Graphene Oxide ◽  
Electrochemical Sensor ◽  
Reduced Graphene Oxide ◽  
Modified Electrode ◽  
Electrochemical Determination ◽  
Reduced Graphene

A sensitive electrochemical sensor of paracetamol was developed based on a β-CD/reduced graphene oxide modified electrode.

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 Simultaneous Determination of Uric Acid and Xanthine Using a Poly(Methylene Blue) and Electrochemically Reduced Graphene Oxide Composite Film Modified Electrode

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Gen Liu ◽  
Wei Ma ◽  
Yan Luo ◽  
Deng-ming Sun ◽  
Shuang Shao
Keyword(s):  
Methylene Blue ◽  
Uric Acid ◽  
Graphene Oxide ◽  
Composite Film ◽  
Simultaneous Determination ◽  
Reduced Graphene Oxide ◽  
Modified Electrode ◽  
Reduced Graphene ◽  
Electrochemically Reduced Graphene Oxide

Poly(methylene blue) and electrochemically reduced graphene oxide composite film modified electrode (PMB-ERGO/GCE) was successfully fabricated by electropolymerization and was used for simultaneous determination of uric acid (UA) and xanthine (Xa). Based on the excellent electrocatalytic activity of PMB-ERGO/GCE, the electrochemical behaviors of UA and Xa were studied by cyclic voltammetry (CV) and square wave voltammetry (SWV). Two anodic sensitive peaks at 0.630 V (versus Ag/AgCl) for UA and 1.006 V (versus Ag/AgCl) for Xa were given by CV in pH 3.0 phosphate buffer. The calibration curves for UA and Xa were obtained in the range of 8.00 × 10−8~4.00 × 10−4 M and 1.00 × 10−7~4.00 × 10−4 M, respectively, by SWV. The detection limits for UA and Xa were3.00×10-8 M and5.00×10-8 M, respectively. Finally, the proposed method was applied to simultaneously determine UA and Xa in human urine with good selectivity and high sensitivity.

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