Facile synthesis of uniform Pt nanoparticles on polydopamine-reduced graphene oxide and their electrochemical sensing

2013 ◽  
Vol 112 ◽  
pp. 127-132 ◽  
Author(s):  
Qian-Li Zhang ◽  
Tian-Qi Xu ◽  
Jie Wei ◽  
Jian-Rong Chen ◽  
Ai-Jun Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Pt Nanoparticles ◽  
Electrochemical Sensing ◽  
Facile Synthesis ◽  
Reduced Graphene

scholarly journals Facile Synthesis of β-Lactoglobulin-Functionalized Reduced Graphene Oxide and Trimetallic PtAuPd Nanocomposite for Electrochemical Sensing

Nanomaterials ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 724 ◽  
Author(s):  
Bingkai Han ◽  
Meixin Pan ◽  
Jiexin Zhou ◽  
Yingying Wang ◽  
Zihua Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Glucose Sensor ◽  
Electrochemical Sensing ◽  
Facile Synthesis ◽  
Serum Samples ◽  
X Ray ◽  
Transmission Electron ◽  
Reduced Graphene ◽  
Β Lactoglobulin

The use of graphene has leapt forward the materials field and the functional modification of graphene has not stopped. In this work, β-lactoglobulin (BLG) was used to functionalize reduced graphene oxide (RGO) based on its amphiphilic properties. Also, trimetallic PtAuPd nanoparticles were reduced to the surface of BLG-functionalized RGO and formed BLG-PtAuPd-RGO nanocomposite using facile synthesis. Transmission electron microscopy, energy-dispersive X-ray spectroscopy and Fourier transform infrared spectra were used to characterize the nanocomposite. Electrocatalytic analysis was evaluated through cyclic voltammetry and chronoamperometry methods. We developed a glucose sensor by fabricating GOD-BLG-PtAuPd-RGO/glassy carbon (GC) electrode. It presented a remarkable sensitivity of 63.29 μA mM−1 cm−2 (4.43 μA mM−1), a wider linear range from 0.005 to 9 mM and a lower detection limit of 0.13 μM (S/N = 3). Additionally, the glucose sensor exhibited excellent testing capability in human serum samples.

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