Chemical Research in Chinese Universities ›› 2019, Vol. 35 ›› Issue (1): 163-170.doi: 10.1007/s40242-018-8154-6

• Articles • Previous Articles    

Novel Approach for the Decoration of Magnetic Carbon Nanospheres with Platinum Nanoparticles and Their Enhanced Peroxidase Activity for the Colorimetric Detection of H2O2

SU Ce, BAI Lingling, ZHANG Hongbo, CHANG Kaishan, LI Guanbin, LI Siliang   

  1. School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, P. R. China
  • Received:2018-05-11 Revised:2018-11-09 Online:2019-02-01 Published:2019-01-09
  • Contact: SU Ce, LI Siliang E-mail:cesu1008@lut.cn;lsl2004@lut.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21761019).

Abstract: 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 nanocomposite can be conveniently preserved and separated. These features enable the nanocomposite to colorimetrically detect H2O2 for potential pharmaceutical, environmental and industrial applications.

Key words: Pt nanoparticle, Magnetic carbon nanosphere, Peroxidase-like activity, Colorimetric sensor, H2O2