A novel electrochemical aptasensor for the sensitive detection of kanamycin based on UiO-66-NH2/MCA/MWCNT@rGONR nanocomposites

2020 ◽  
Vol 12 (41) ◽  
pp. 4967-4976
Author(s):  
Xin Yao ◽  
Jinhui Shen ◽  
Qingyan Liu ◽  
Huanbao Fa ◽  
Mei Yang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Carbon Nanotube ◽  
Reduced Graphene Oxide ◽  
Cyanuric Acid ◽  
Multiwalled Carbon Nanotube ◽  
Sensitive Detection ◽  
Electrochemical Aptasensor ◽  
Multiwalled Carbon ◽  
Amine Functionalized ◽  
Reduced Graphene

We designed and synthesized a nanocomposite comprising an amine-functionalized MOF (UiO-66-NH2), a multiwalled carbon nanotube@reduced graphene oxide nanoribbon (MWCNT@rGONR) and a covalent organic framework synthesized using melamine and cyanuric acid monomers.

Multiwalled carbon nanotube@reduced graphene oxide nanoribbon heterostructure: synthesis, intrinsic peroxidase-like catalytic activity, and its application in colorimetric biosensing

2015 ◽  
Vol 3 (8) ◽  
pp. 1624-1632 ◽  
Author(s):  
Jing Qian ◽  
Xingwang Yang ◽  
Zhenting Yang ◽  
Gangbing Zhu ◽  
Hanping Mao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Carbon Nanotube ◽  
Reduced Graphene Oxide ◽  
Multiwalled Carbon Nanotube ◽  
Core Shell ◽  
Multiwalled Carbon ◽  
Peroxidase Mimetic ◽  
Reduced Graphene ◽  
Colorimetric Biosensing

The MWCNT@rGONR core–shell heterostructure was proved to be a novel peroxidase mimetic and has been used for colorimetric biosensing of cholesterol.

Reduced Graphene Oxide/Multiwalled Carbon Nanotube Composite Decorated with Fe3O4 Magnetic Nanoparticles for Electrochemical Determination of Hydrazine in Environmental Water

2020 ◽  
Vol 20 (5) ◽  
pp. 3148-3156 ◽  
Author(s):  
S. Nehru ◽  
Subramanian Sakthinathan ◽  
P. Tamizhdurai ◽  
Te-Wei Chiu ◽  
K. Shanthi
Keyword(s):  
Graphene Oxide ◽  
Carbon Nanotube ◽  
Magnetic Nanoparticles ◽  
Reduced Graphene Oxide ◽  
Electrochemical Impedance ◽  
Limit Of Detection ◽  
High Sensitivity ◽  
Multiwalled Carbon Nanotube ◽  
Multiwalled Carbon ◽  
Reduced Graphene

In the present work, a reduced graphene oxide and multiwalled carbon nanotube (RGO/MWCNTFe3O4) composite decorated with Fe3O4 magnetic nanoparticles was prepared as an electrochemical sensor. The surface morphology of the prepared composite was identified by scanning electron microscopy and X-ray diffraction. The electrochemical properties of the GCE/RGO/MWCNT-Fe3O4 electrode were investigated by electrochemical impedance spectroscopy, cyclic voltammetry and amperometry. The GCE/RGO/MWCNT-Fe3O4 electrode exhibited higher electrocatalytic performance towards the oxidation of hydrazine. In the optimal conditions, the GCE/RGO/MWCNT-Fe3O4 electrode showed a wide linear range (0.15–220 μM), low limit of detection (LOD) (0.75 μM), and high sensitivity (2.868 μA μM−1 cm−2). The prepared GCE/RGO/MWCNT-Fe3O4 electrode also had excellent repeatability, selectivity, and reproducibility. The practical application of the electrode was confirmed with various spiked water samples and demonstrated acceptable recovery.

Rapid and sensitive detection of Salmonella with reduced graphene oxide-carbon nanotube based electrochemical aptasensor

2020 ◽  
Vol 589 ◽  
pp. 113489 ◽  
Author(s):  
Jimmy Nelson Appaturi ◽  
Thiruchelvi Pulingam ◽  
Kwai Lin Thong ◽  
Shalini Muniandy ◽  
Noraini Ahmad ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Carbon Nanotube ◽  
Reduced Graphene Oxide ◽  
Sensitive Detection ◽  
Electrochemical Aptasensor ◽  
Reduced Graphene
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