Nonenzymatic hydrogen peroxide electrochemical sensor based on carbon-coated SnO2 supported Pt nanoparticles.
We describe a simple method for preparing the hybrid material of Pt nanoparticles (NPs) supported on carbon-coated SnO(2) nanospheres (Pt-SnO(2)@C). The as-prepared Pt-SnO(2)@C nanocomposite was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The presence of carbon-coated SnO(2) nanospheres (SnO(2)@C) remarkably improves the electrocatalytic activity of Pt NPs towards hydrogen peroxide (H(2)O(2)) oxidation. The Pt-SnO(2)@C nanocomposite modified glassy carbon (GC) electrode exhibited enhanced amperometric response to H(2)O(2), with detection limit of 0.1 μM and sensitivity of 241.1 μA mM(-1) cm(-2).
College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China.
Haiting
H
Lu
Sheng
S
Yu
Yang
Y
Fan
Chunpeng
C
Yang
Dongli
D
Xu
D002244:Carbon; D002384:Catalysis; D004563:Electrochemistry / Q000295:instrumentation* / Q000379:methods*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D007202:Indicators and Reagents; D008855:Microscopy, Electron, Scanning; D053758:Nanoparticles; D016877:Oxidants / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry*; D017971:Tin Compounds / Q000737:chemistry*; D014961:X-Ray Diffraction
D007202:Indicators and Reagents; D016877:Oxidants; D017971:Tin Compounds; D010984:Platinum; D002244:Carbon; D006861:Hydrogen Peroxide; C045358:stannic oxide