Electrochemical preparation of Ag nanoparticles/poly(methylene blue) functionalized graphene nanocomposite film modified electrode for sensitive determination of rutin

2014 ◽  
Vol 717-718 ◽  
pp. 225-230 ◽  
Author(s):  
Suling Yang ◽  
Gang Li ◽  
Junhong Zhao ◽  
Huimin Zhu ◽  
Lingbo Qu
Keyword(s):  
Methylene Blue ◽  
Modified Electrode ◽  
Ag Nanoparticles ◽  
Nanocomposite Film ◽  
Functionalized Graphene ◽  
Electrochemical Preparation ◽  
Graphene Nanocomposite ◽  
Sensitive Determination

Facile synthesized SnO 2 decorated functionalized graphene modified electrode for sensitive determination of daidzein

Talanta ◽  
2017 ◽  
Vol 168 ◽  
pp. 1-9 ◽  
Author(s):  
Yamin Fu ◽  
Lu Wang ◽  
Yinghao Duan ◽  
Lina Zou ◽  
Baoxian Ye
Keyword(s):  
Modified Electrode ◽  
Functionalized Graphene ◽  
Sensitive Determination

Sensitive Determination of Rutin Using a Nafion/PMB/Graphene Composite-Modified Glassy Electrode

2013 ◽  
Vol 641-642 ◽  
pp. 566-569
Author(s):  
Feng Cai ◽  
Jian Fei Xia ◽  
Zong Hua Wang ◽  
Yan Zhi Xia ◽  
Fei Fei Zhang ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Detection Limit ◽  
Modified Electrode ◽  
Linear Relation ◽  
Peak Current ◽  
Good Linear ◽  
Graphene Composite ◽  
Scan Rate ◽  
Sensitive Determination

A novel Nafion/PMB/G/GCE was prepared by firstly electro-polymerization of MB to G/GCE and then coating Nafion on PMB/G/GCE. The as-prepared modified electrode combining the advantages of Nafion, methylene blue and G was employed for the sensitive detection of rutin. The results showed that the peak current of rutin obtained on Nafion/PMB/G/GCE was obviously high compared to bare electrode and G/GCE. Under the optimized value of pH, which was pH 3.0, peak current of rutin had good linear relation with the scan rate. At the same time, peak current increased linearly with increasing concentration of rutin. The linear range was from 5×10-7 mol/L to 1.2×10-5 mol/L, and the detection limit was 9.5×10-8 mol/L

Sensitive determination of bisphenol A based on Ag nanoparticles/polyguanine modified electrode

2017 ◽  
Vol 53 (2) ◽  
pp. 132-139 ◽  
Author(s):  
Hong-Ying Li ◽  
Xue-Liang Wang ◽  
Zhao-Xia Wang ◽  
Wei Jiang
Keyword(s):  
Bisphenol A ◽  
Modified Electrode ◽  
Ag Nanoparticles ◽  
Sensitive Determination

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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