Electrochemical Myoglobin Biosensor Based on Magnesium Metal-Organic Frameworks and Gold Nanoparticles Composite Modified Electrode

Author(s):  
Guiling Luo ◽  
Author(s):  
Shaoming Yang ◽  
Jian Zhang ◽  
Chaopeng Bai ◽  
Kaiqiang Deng

In this study by way of encapsulation of reduced graphene oxide (rGO) into Ni-based metal-organic framework (Ni-MOFs) structure, the composite rGO@Ni-MOFs was first prepared. Then gold nanoparticles (AuNPs) decorated rGO@Ni-MOFs (rGO@Ni-MOFs/AuNPs) was obtained through the electrodeposition. The morphology and structure of rGO@Ni-MOFs/AuNPs were characterized by SEM, FTIR and XRD. The rGO@Ni-MOFs/AuNPs modified electrode was used for the detection of dopamine (DA). The combining the catalysis from Ni-MOFs and AuNPs with the conductivity of rGO endowed rGO@Ni-MOFs/AuNPs with synergetic high catalytic activity to the electrochemical oxidation of DA. The developed modified electrode had a good linear relationship with DA in the concentration range of 0.5 μM~120 μM, and the detection limit was 0.33 μM (S/N=3). Additionally, the potential interferents, electrode stability, reproducibility and practical applications were also studied and satisfactory results were obtained.


2021 ◽  
Author(s):  
Hexiang Li ◽  
Fawei Zhu ◽  
Jun Xiang ◽  
Fangbin Wang ◽  
Qi Liu ◽  
...  

We herein report a facile and scalable strategy for fabrication of the metal organic frameworks (MOFs) based composite by in-situ growing ZIF-8 on the gold nanoparticles (AuNPs) loaded magnetic carbon...


The Analyst ◽  
2017 ◽  
Vol 142 (14) ◽  
pp. 2640-2647 ◽  
Author(s):  
Xiaolin Cao ◽  
Sihui Hong ◽  
Zejun Jiang ◽  
Yongxin She ◽  
Shanshan Wang ◽  
...  

Surface-enhanced Raman scattering (SERS) has been widely used in the detection of targets and strongly depends on the interaction and the distance between the targets and nanoparticles.


2020 ◽  
Vol 6 (2) ◽  
pp. 247-253 ◽  
Author(s):  
Xuedi Qin ◽  
Sanfeng He ◽  
Jiasheng Wu ◽  
Yaqi Fan ◽  
Fang Wang ◽  
...  

2019 ◽  
Vol 131 (34) ◽  
pp. 11883-11888 ◽  
Author(s):  
Huajun Yang ◽  
Thuong Xinh Trieu ◽  
Xiang Zhao ◽  
Yanxiang Wang ◽  
Yong Wang ◽  
...  

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