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.

Highly sensitive detection of hesperidin using AuNPs/rGO modified glassy carbon electrode

The Analyst ◽  
2018 ◽  
Vol 143 (1) ◽  
pp. 297-303 ◽  
Author(s):  
Yang Gao ◽  
Xiufeng Wu ◽  
Hui Wang ◽  
Wenbo Lu ◽  
Mandong Guo
Keyword(s):  
Gold Nanoparticles ◽  
Graphene Oxide ◽  
Electrochemical Sensor ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Reduced Graphene ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

The highly sensitive and selective electrochemical sensor of hesperidin based on gold nanoparticles (AuNPs) and reduced graphene oxide (rGO) modified glassy carbon electrode (GCE) is reported.

scholarly journals Reduced graphene oxides with engineered defects enable efficient electrochemical reduction of dinitrogen to ammonia in wide pH range

Nano Energy ◽  
2020 ◽  
Vol 68 ◽  
pp. 104323 ◽  
Author(s):  
Mingli Zhang ◽  
Changhyeok Choi ◽  
Rupeng Huo ◽  
Geun Ho Gu ◽  
Song Hong ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Graphene Oxides ◽  
Reduced Graphene ◽  
Wide Ph Range ◽  
Reduced Graphene Oxides ◽  
Ph Range

A highly sensitive glucose sensor based on a gold nanoparticles/polyaniline/multi-walled carbon nanotubes composite modified glassy carbon electrode

2018 ◽  
Vol 42 (14) ◽  
pp. 11944-11953 ◽  
Author(s):  
Xinping Zeng ◽  
Yazhou Zhang ◽  
Xiling Du ◽  
Yanfei Li ◽  
Wenwei Tang
Keyword(s):  
Carbon Nanotubes ◽  
Gold Nanoparticles ◽  
Glucose Sensor ◽  
High Sensitivity ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Highly Sensitive ◽  
Multi Walled Carbon Nanotubes ◽  
Application Potential ◽  
Walled Carbon Nanotubes

The PTFE/GOx/AuNPs/PANI/MWCNTs/GCE glucose sensor possesses wide linear range, low detection limit, high sensitivity, which can measure the glucose in human serum and holds application potential.

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.

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