Sensitive and selective determination of trace amounts of mercury ions using dimercaprol functionalized graphene quantum dot modified glassy carbon electrode

Nanoscale ◽  
2021 ◽  
Author(s):  
Maria Esmaeili ◽  
Fatemeh Ahour ◽  
Sajjad Keshipour
Keyword(s):  
Electron Microscopy ◽  
Quantum Dot ◽  
Carbon Electrode ◽  
Functionalized Graphene ◽  
Mercury Ions ◽  
Modified Glassy Carbon Electrode ◽  
Graphene Quantum Dot ◽  
Selective Determination ◽  
Transmission Electron

A novel nanomaterial is synthesized based on the functionalization of graphene quantum dot with dimercaprol (GQD-DMC). Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and high-resolution transmission electron microscopy...

scholarly journals Graphene quantum dot modified glassy carbon electrode for the determination of doxorubicin hydrochloride in human plasma

2016 ◽  
Vol 6 (4) ◽  
pp. 235-241 ◽  
Author(s):  
Nastaran Hashemzadeh ◽  
Mohammad Hasanzadeh ◽  
Nasrin Shadjou ◽  
Jamal Eivazi-Ziaei ◽  
Maryam Khoubnasabjafari ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Human Plasma ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
Doxorubicin Hydrochloride ◽  
Modified Glassy Carbon Electrode ◽  
Graphene Quantum Dot

Self-Assembled Hybrid Films of Graphene/Carbon Nanotube Modified Electrode for Sensitive and Selective Determination of Rutin

2012 ◽  
Vol 531 ◽  
pp. 419-422 ◽  
Author(s):  
Zong Hua Wang ◽  
Shu Yan Yao ◽  
Jian Fei Xia ◽  
Fei Fei Zhang ◽  
Xin Mei Guo ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electrochemical Sensor ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Rapid Determination ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Hybrid Films ◽  
Selective Determination

Abstract: Graphene/Carbon Nanotube hybrid films modified glassy carbon electrode (GN-CNT/GC) was fabricated as electrochemical sensor for the sensitive and rapid determination of rutin. The electrochemical behaviors of rutin at the GN-CNT/GC have been investigated. Rutin can generate a pair of well-defined redox peaks at the GN-CNT/GC located at 0.450 V (Epa) and 0.409 V (Epc). Compared with graphene modified glassy carbon electrode (GN/GC) and carbon nanotube modified glassy carbon electrode (CNT/GC), GN-CNT/GC showed a higher catalytic activity toward rutin. This result indicates that the GN-CNT hybrid films as a modifier strengthens the adsorption of rutin. Cyclic voltammetry (CV), different pulse voltammetry (DPV) and transmission electron microscopy (TEM) were employed to characterize the electrochemical sensor and hybrid films. Under the optimal conditions, the oxidation peak current is linear to the rutin concentration over the range of 2.0×10-7-6.0×10-5 M and the detection limits were 1.0×10-7 M.

Determination of the Quantum Dot Band Gap Dependence on Particle Size from Optical Absorbance and Transmission Electron Microscopy Measurements

ACS Nano ◽  
2012 ◽  
Vol 6 (10) ◽  
pp. 9021-9032 ◽  
Author(s):  
Doris Segets ◽  
J. Matthew Lucas ◽  
Robin N. Klupp Taylor ◽  
Marcus Scheele ◽  
Haimei Zheng ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Particle Size ◽  
Quantum Dot ◽  
Band Gap ◽  
Optical Absorbance ◽  
Transmission Electron
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