Novel Approach for the Decoration of Magnetic Carbon Nanospheres with Platinum Nanoparticles and Their Enhanced Peroxidase Activity for the Colorimetric Detection of H2O2
Ce Su , Lingling Bai , Hongbo Zhang , Kaishan Chang , Guanbin Li , Siliang Li
Chemical Research in Chinese Universities ›› 2019, Vol. 35 ›› Issue (1) : 163 -170.
Novel Approach for the Decoration of Magnetic Carbon Nanospheres with Platinum Nanoparticles and Their Enhanced Peroxidase Activity for the Colorimetric Detection of H2O2
Pt/Fe3O4-DIB-DETA-CNS(PFDDC) nanocomposite(DIB=2,4-dihydroxybenzaldehyde; DETA=diethylene-triamine; CNS=carbon nanosphere) was synthesized by dispersing Pt nanoparticles on magnetic carbon nanospheres. The structure, morphology and composition of the nanocomposite were studied by X-ray diffraction(XRD), transmission electron microscopy(TEM), energy-dispersive X-ray spectroscopy(EDX) and X-ray photoelectron spectroscopy(XPS). In addition, the nanocomposite showed superior peroxidase-like activity towards 3,3′,5,5′-tetramethylbenzidine(TMB) with a visual color change in the presence of hydrogen peroxide(H2O2). Therefore, the PFDDC nanocomposite provides a sensing platform for the colorimetric detection of H2O2 with high sensitivity and selectivity. Furthermore, the nano-composite can be conveniently preserved and separated. These features enable the nanocomposite to colorimetrically detect H2O2 for potential pharmaceutical, environmental and industrial applications.
Pt nanoparticle / Magnetic carbon nanosphere / Peroxidase-like activity / Colorimetric sensor / H2O2
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