A glassy carbon electrode modified with amino-functionalized graphene oxide and molecularly imprinted polymer for electrochemical sensing of bisphenol A

2016 ◽  
Vol 183 (6) ◽  
pp. 1933-1941 ◽  
Author(s):  
Sahar Dadkhah ◽  
Ehsan Ziaei ◽  
Ali Mehdinia ◽  
Tohid Baradaran Kayyal ◽  
Ali Jabbari
Polymers ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1329 ◽  
Author(s):  
Lingyu Liu ◽  
Xudong Zhu ◽  
Yanbo Zeng ◽  
Hailong Wang ◽  
Yixia Lu ◽  
...  

In this paper, we report a new composite of reduced graphene oxide/Fe3O4-ionic liquid based molecularly imprinted polymer (RGO/Fe3O4-IL-MIP) fabricated for diphenylamine (DPA) detection. RGO/Fe3O4-IL-MIP was prepared with RGO/Fe3O4 as supporter, ionic liquid 1-vinyl-3-butylimidazolium hexafluorophosphate ([VC4mim][PF6]) as functional monomer, ionic liquid 1,4-butanediyl-3,3’-bis-l-vinylimidazolium dihexafluorophosphate ([V2C4(mim)2][(PF6)2]) as cross-linker, and diphenylamine (DPA) as template molecule. Fourier transform infrared spectroscopy, thermal gravimetric analysis, scanning electron microscopy, and vibrating sample magnetometer were employed to characterize the RGO/Fe3O4-IL-MIP composite. RGO/Fe3O4-IL-MIP was then drop-cast onto a glassy carbon electrode to construct an electrochemical sensor for DPA. The differential pulse voltammetry (DPV) peak current response for 20 μM DPA of RGO/Fe3O4-IL-MIP modified glassy carbon electrode (GCE) was 3.24 and 1.68 times that of RGO/Fe3O4-IL-NIP and RGO/Fe3O4-EGDMA-MIP modified GCEs, respectively, indicating the advantage of RGO/Fe3O4-IL-MIP based on ionic liquid (IL) as a cross-linker. The RGO/Fe3O4-IL-MIP sensor demonstrated good recognition for DPA. Under the optimized conditions, the RGO/Fe3O4-IL-MIP sensor exhibited a DPA detection limit of 0.05 μM (S/N = 3) with a linear range of 0.1–30 μM. Moreover, the new RGO/Fe3O4-IL-MIP based sensor detected DPA in real samples with satisfactory results.


RSC Advances ◽  
2016 ◽  
Vol 6 (39) ◽  
pp. 32915-32921 ◽  
Author(s):  
Zhiming Jiang ◽  
Guangyu Li ◽  
Mingxiao Zhang

A novel selective and sensitive electrochemical sensor for moxifloxacin (MFLX) detection based on bifunctional monomer molecularly imprinted polymer (MIP) membranes on a glassy carbon electrode (GCE) modified with graphene was constructed.


2011 ◽  
Vol 152 (2) ◽  
pp. 220-225 ◽  
Author(s):  
José de Ribamar Martins Neto ◽  
Wilney de Jesus Rodrigues Santos ◽  
Phabyanno Rodrigues Lima ◽  
Sônia Maria Carvalho Neiva Tanaka ◽  
Auro Atsushi Tanaka ◽  
...  

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