A novel determination of curcumin via Ru@Au nanoparticle decorated nitrogen and sulfur-functionalized reduced graphene oxide nanomaterials

2016 ◽  
Vol 8 (2) ◽  
pp. 401-408 ◽  
Author(s):  
Gül Kotan ◽  
Faruk Kardaş ◽  
Özlem Aktaş Yokuş ◽  
Onur Akyıldırım ◽  
Hasan Saral ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Au Nanoparticles ◽  
Au Nanoparticle ◽  
Reduced Graphene

We report the synthesis of Ru@Au nanoparticles involved l-cysteine functionalized reduced graphene oxide (rGO) composites (NSrGO/Ru@AuNPs).

Reduced Graphene Oxide Decorated Au Nanoparticles as an Efficient Electrode for the Determination of Hydroquinone

Nano Progress ◽  
2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Selvamani Arumugam ◽  
Babu Cadiam Mohan ◽  
Ramkumar Vanaraj ◽  
B. Sundaravel
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Au Nanoparticles ◽  
Reduced Graphene

Reduced Graphene Oxide Decorated Au Nanoparticles as an Efficient Electrode for the Determination of Hydroquinone

Nano Progress ◽  
2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Selvamani Arumugam ◽  
Babu Cadiam Mohan ◽  
Ramkumar Vanaraj ◽  
B. Sundaravel
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Au Nanoparticles ◽  
Reduced Graphene

Selective and Sensitive Determination of Folic Acid Based on Molecularly Imprinted Poly (o-aminophenol) and Reduced Graphene Oxide Decorated with Au Nanoparticles

2020 ◽  
Vol 17 ◽  
Author(s):  
Youyuan Peng ◽  
Xiaojing Zhang
Keyword(s):  
Graphene Oxide ◽  
Folic Acid ◽  
Reduced Graphene Oxide ◽  
Au Nanoparticles ◽  
Water Soluble ◽  
Molecularly Imprinted ◽  
Selective Determination ◽  
Reduced Graphene ◽  
Molecularly Imprinted Film

Background: Folic acid (pteroylglutamic acid, FA), known as a water soluble vitamin of B complex family, plays an important role in the human body. However, excess intake of FA would mask the vitamin B12 deficiency symptoms which may lead to other health risks. Therefore, it is very important to develop a method for the sensitive and selective determination of FA in natural sources, fortified foods and multivitamin preparations. Methods: An electrochemical sensor was fabricated for the analysis of FA, which was based on electropolymerized molecularly imprinted poly (o-aminophenol) film and reduced graphene oxide decorated with Au nanoparticles composites (rGO-AuNPs). Transmission electron microscope, cyclic voltammetry, electrochemical impedance spectroscopy and differential pulse voltammetry were utilized for the characterization of the imprinted polymer film. Results: Under the optimized experimental conditions, the proposed sensor exhibited two distinct linear responses ranging from 0.02 to 0.8 μmol L-1 and 0.8 to 10 μmol L-1 towards the concentrations of FA, and the detection limit was found to be 2.8 nmol L-1 (S/N=3). The molecularly imprinted film proposed was also found to exhibit comparatively high selectivity toward folic acid against structurally similar analogues, and the preparation of the sensor was simple and reproducible. Conclusions: In this work, a molecularly imprinted film fabricated on a rGO-AuNPs modified electrode was developed for the sensitive and selective determination of FA. Furthermore, the method was applied to the detection of FA in infant formula milk, multivitamin tablets and blood serum sample with satisfactory results.

Electrodeposition of Au nanoparticles on poly(diallyldimethylammonium chloride) functionalized reduced graphene oxide sheets for voltammetric determination of nicotine in tobacco products and anti-smoking pharmaceuticals

RSC Advances ◽  
2016 ◽  
Vol 6 (31) ◽  
pp. 26247-26253 ◽  
Author(s):  
Yanqiu Jing ◽  
Erge Lin ◽  
Xinhong Su ◽  
Yingjie Liu ◽  
Huaiqi Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electrochemical Sensor ◽  
Reduced Graphene Oxide ◽  
Au Nanoparticles ◽  
Voltammetric Determination ◽  
Tobacco Products ◽  
Diallyldimethylammonium Chloride ◽  
Reduced Graphene ◽  
Graphene Oxide Sheets

The principal objective of this study was to develop a sensitive and selective electrochemical sensor for nicotine detection based on a novel PDDA-RGO/Au nanocomposite.

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.

Sign in / Sign up

Export Citation Format

Share Document