scholarly journals Highly Sensitive and Selective Determination of Dopamine Based on Ionic Liquid-Titanium Dioxide/Graphene Oxide Nanocomposite Modified Electrode

2016 ◽  
pp. 10107-10122 ◽  
Author(s):  
Chao-Zhi Lv ◽  
Keyword(s):  
Ionic Liquid ◽  
Titanium Dioxide ◽  
Graphene Oxide ◽  
Modified Electrode ◽  
Selective Determination ◽  
Highly Sensitive ◽  
Liquid Titanium

Enzyme-free selective determination of H2O2 and glucose using functionalized CuNP-modified graphite electrode in room temperature ionic liquid medium

RSC Advances ◽  
2014 ◽  
Vol 4 (88) ◽  
pp. 47497-47504 ◽  
Author(s):  
Rajendran Suresh Babu ◽  
Pandurangan Prabhu ◽  
Sangilimuthu Sriman Narayanan
Keyword(s):  
Ionic Liquid ◽  
Liquid Medium ◽  
Modified Electrode ◽  
Room Temperature ◽  
Graphite Electrode ◽  
Room Temperature Ionic Liquid ◽  
Selective Determination ◽  
Highly Sensitive ◽  
Ionic Liquid Medium

The proposed method demonstrates a new PCFCuNP modified electrode using ionic liquid as a green electrolyte. This method also achieved highly sensitive and selective determination towards H2O2 and glucose.

scholarly journals A highly sensitive biosensor based on methacrylated graphene oxide-grafted polyaniline for ascorbic acid determination

2020 ◽  
Vol 9 (1) ◽  
pp. 760-767 ◽  
Author(s):  
Seyed Morteza Naghib ◽  
Farahnaz Behzad ◽  
Mehdi Rahmanian ◽  
Yasser Zare ◽  
Kyong Yop Rhee
Keyword(s):  
Ascorbic Acid ◽  
Graphene Oxide ◽  
Current Response ◽  
Functionalized Graphene ◽  
Serum Samples ◽  
Promising Candidate ◽  
Graphene Nanocomposites ◽  
Selective Determination ◽  
Highly Sensitive

AbstractFunctionalized graphene-based nanocomposites have opened new windows to address some challenges for increasing the sensitivity, accuracy and functionality of biosensors. Polyaniline (PANI) is one of the most potentially promising and technologically important conducting polymers, which brings together the electrical features of metals with intriguing properties of plastics including facile processing and controllable chemical and physical properties. PANI/graphene nanocomposites have attracted intense interest in various fields due to unique physicochemical properties including high conductivity, facile preparation and intriguing redox behavior. In this article, a functionalized graphene-grafted nanostructured PANI nanocomposite was applied for determining the ascorbic acid (AA) level. A significant current response was observed after treating the electrode surface with methacrylated graphene oxide (MeGO)/PANI nanocomposite. The amperometric responses showed a robust linear range of 8–5,000 µM and detection limit of 2 µM (N = 5). Excellent sensor selectivity was demonstrated in the presence of electroactive components interfering species, commonly found in real serum samples. This sensor is a promising candidate for rapid and selective determination of AA.

Synthesis of fluorescent ionic liquid-functionalized silicon nanoparticles with tunable amphiphilicity and selective determination of Hg2+

2018 ◽  
Vol 6 (48) ◽  
pp. 8214-8220 ◽  
Author(s):  
Quan Li ◽  
Kaite Peng ◽  
Yanzhen Lu ◽  
Aoxin Li ◽  
Fenfang Che ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Silicon Nanoparticles ◽  
Selective Detection ◽  
Label Free ◽  
Selective Determination ◽  
Highly Sensitive

Label-free fluorescent ionic liquid-functionalized silicon nanoparticles with tunable amphiphilicity for highly sensitive and selective detection of Hg2+ were synthesized.

NiO–ZrO2 nanocomposite modified electrode for the sensitive and selective determination of efavirenz, an anti-HIV drug

RSC Advances ◽  
2015 ◽  
Vol 5 (50) ◽  
pp. 40057-40064 ◽  
Author(s):  
Neeta Thapliyal ◽  
Nadir S. E. Osman ◽  
Harun Patel ◽  
Rajshekhar Karpoormath ◽  
Rajendra N. Goyal ◽  
...  
Keyword(s):  
Modified Electrode ◽  
Biological Samples ◽  
Trace Analysis ◽  
Selective Determination ◽  
Highly Sensitive ◽  
Anti Hiv

A highly sensitive NiO–ZrO2 nanocomposite modified electrode was fabricated for trace analysis of efavirenz in pharmaceutical and biological samples.

scholarly journals Carbon nanotube-ionic liquid nanocomposite modified carbon-ceramic electrode for determination of dopamine in real samples

2013 ◽  
Vol 11 (7) ◽  
pp. 1172-1186 ◽  
Author(s):  
Mir Majidi ◽  
Reza Baj ◽  
Abdolhossein Naseri
Keyword(s):  
Ionic Liquid ◽  
Carbon Nanotube ◽  
Modified Electrode ◽  
Electrochemical Impedance ◽  
Differential Pulse ◽  
Selective Determination ◽  
Carbon Ceramic Electrode ◽  
Electro Oxidation ◽  
Carbon Ceramic

AbstractRoom temperature 1-butyl-3-methylimidazolium tetraflouroborate ([BMIM][BF4]) ionic liquid was employed for dispersion of multi walled carbon nanotubes (MWCNTs) and the formation of nanocomposite on the surface of a carbon-ceramic electrode. The surface of the modified electrode was characterized using scanning electron microscopy and electrochemical impedance spectroscopy. The modified electrode exhibited excellent electrochemical activity to oxidation of dopamine (DA); whereas electro oxidation of ascorbic acid (AA) was not seen and electro oxidation of uric acid (UA) appeared at a more positive potential than DA. The multi walled carbon nanotube-ionic liquid nanocomposite modified carbon-ceramic electrode was used for the selective determination of DA in the presence of high levels of AA and UA using differential pulse voltammetry. The calibration curve for DA was linear in the range of 3.00 to 130 µM with the detection limit (S/N=3) of 0.87 µM. The present electrode was successfully applied to the determination of DA in some commercial pharmaceutical samples and human blood serum.

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