Direct Electrochemistry of CytochromecBased on Poly(diallyldimethylammonium Chloride)- Graphene Nanosheets/Gold Nanoparticles Hybrid Nanocomposites and Its Biosensing

2013 ◽  
Vol 25 (6) ◽  
pp. 1400-1409 ◽  
Author(s):  
Yonghai Song ◽  
Hongyu Liu ◽  
Lingli Wan ◽  
Yu Wang ◽  
Haoqing Hou ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Graphene Nanosheets ◽  
Direct Electrochemistry ◽  
Hybrid Nanocomposites ◽  
Diallyldimethylammonium Chloride

Layer-by-layer self-assembly of 2D graphene nanosheets, 3D copper oxide nanoflowers and 0D gold nanoparticles for ultrasensitive electrochemical detection of alpha fetoprotein

RSC Advances ◽  
2015 ◽  
Vol 5 (70) ◽  
pp. 56583-56589 ◽  
Author(s):  
Yulan Wang ◽  
Dan Wu ◽  
Yong Zhang ◽  
Xiang Ren ◽  
Yaoguang Wang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Copper Oxide ◽  
Electrochemical Detection ◽  
Self Assembly ◽  
Graphene Nanosheets ◽  
Electrochemical Immunosensor ◽  
Alpha Fetoprotein ◽  
Quantitative Detection ◽  
Layer By Layer ◽  
Label Free

In this work, a novel and ultrasensitive label-free electrochemical immunosensor was developed for the quantitative detection of alpha fetoprotein (AFP).

scholarly journals The direct electrochemistry and bioelectrocatalysis of nitrate reductase at a gold nanoparticles/aminated graphene sheets modified glassy carbon electrode

RSC Advances ◽  
2019 ◽  
Vol 9 (64) ◽  
pp. 37207-37213 ◽  
Author(s):  
Ke Zhang ◽  
Hao Zhou ◽  
Ping Hu ◽  
Qing Lu
Keyword(s):  
Gold Nanoparticles ◽  
Nitrate Reductase ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Direct Electrochemistry ◽  
Graphene Sheets ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
And Control

The aminated graphene sheets could immobilize nitrate reductase stably and control its orientation through electrostatic attractions, achieving its direct electrochemistry.

scholarly journals Construction of a Biosensor Based on a Combination of Cytochrome c, Graphene, and Gold Nanoparticles

Sensors ◽  
2018 ◽  
Vol 19 (1) ◽  
pp. 40 ◽  
Author(s):  
Chenxing Guo ◽  
Jianfang Wang ◽  
Xianzhe Chen ◽  
Yujiao Li ◽  
Lifang Wu ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Cytochrome C ◽  
Electrochemical Reduction ◽  
Direct Electrochemistry ◽  
High Sensitivity ◽  
Carbon Electrode ◽  
Graphene Oxides ◽  
Deposition Amount ◽  
Reduced Graphene ◽  
Cyt C

A biosensor based on a combination of cytochrome c (Cyt c), electrochemical reduced graphene oxides (ERGO), and gold nanoparticles (AuNPs) on a glassy carbon electrode (GCE) was fabricated. The proposed biosensor electrode was denoted as GCE/ERGO-Nafion/AuNPs/Cyt c/Nafion, where ERGO-Nafion was deposited by dropping graphene oxides-Nafion mixed droplet first and following electrochemical reduction, AuNPs were directly deposited on the surface of the ERGO-Nafion modified electrode by electrochemical reduction, and other components were deposited by the dropping-dry method. The effect of the deposition amount of AuNPs on direct electrochemistry of Cyt c in the proposed electrode was investigated. The hydrogen peroxide was taken to evaluate the performance of the proposed biosensor. The results showed that the biosensor has great analytical performance, including a high sensitivity, a wide linear range, a low detection limit, and good stability, reproducibility, and reliability.

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