Li Xing

Publications (3)14.02 Total impact

• Article: A co-immobilized mediator and microorganism mediated method combined pretreatment by TiO2 nanotubes used for BOD measurement.

  Ling Liu, Shengsen Zhang, Li Xing, Huijun Zhao, Shaojun Dong
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  ABSTRACT: In this paper, we proposed a method by using co-immobilized Escherichia coli (E. coli) as a biocatalyst and neutral red (NR) as an artificial electronic acceptor to modify glassy carbon electrode (GCE) for biochemical oxygen demand (BOD) measurement. Two different modification approaches of GCE were utilized and compared. In one approach, NR was electropolymerized on the surface of GCE, and E. coli cells were mixed with grafting copolymer PVA-g-PVP (briefly gPVP) and covered on NR polymer film to obtain a (gPVP/E. coli)/PNR/GCE. In the second approach, both NR and E. coli cells were mixed with the copolymer gPVP and modified GCE, after drying, which was electrochemically treated similar as above for obtaining a (gPVP/E. coli/NR)p/GCE. Based on the electrochemical evaluation, the performance of the latter was better, which may be caused by that the NR deposited on the surface of E. coli resulting in a good electron transport and permeability of cells membrane. To develop the results obtained at (gPVP/E. coli/NR)p/GCE further, the pretreatment by TiO(2) nanotubes arrays (TNTs) was employed, and different effects on samples of GGA, OECD, urea and real wastewater were evaluated. These results suggest that the present method holds a potential application for rapid BOD biosensor.
  Talanta 05/2012; 93:314-9. · 3.79 Impact Factor
• Article: One-pot, water-phase approach to high-quality graphene/TiO2 composite nanosheets.

  Chengzhou Zhu, Shaojun Guo, Ping Wang, Li Xing, Youxing Fang, Yueming Zhai, Shaojun Dong
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  ABSTRACT: A novel and facile process is reported for water-phase synthesis of high-quality graphene/TiO(2) composite nanosheets (GTCN) on a large scale using TiCl(3) as both a reducing agent and a precursor.
  Chemical Communications 10/2010; 46(38):7148-50. · 6.17 Impact Factor
• Article: Pt modified TiO2 nanotubes electrode: Preparation and electrocatalytic application for methanol oxidation

  Li Xing, Jianbo Jia, Yizhe Wang, Bailin Zhang, Shaojun Dong
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  ABSTRACT: Pt nanoparticles decorated TiO2 nanotubes (Pt/TiO2NTs) modified electrode has been successfully synthesized by depositing Pt in TiO2NTs, which were prepared by anodization of the Ti foil. Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and electrochemical methods were adopted to characterize their structures and properties. The Pt/TiO2NTs electrode shows excellent electrocatalytic activity toward methanol oxidation reaction (MOR) in alkaline electrolyte without UV irradiation.
  International Journal of Hydrogen Energy 35(22):12169-12173. · 4.05 Impact Factor