TiO2-Graphene 氧化物设置了合成(TiO2-Graphene 氧化物) 成功地在低温度被准备了(80 汥' 虪罐鏍劒棟ⅹ?慲杮? 潦 ? 卄吗?
TiO2-Graphene Oxide intercalated composite (TiO2-Graphene Oxide) has been successfully prepared at low temperature (80~C) with graphite oxide (GO) and titanium sulfate (Ti(SOa)2) as initial reactants. GO was firstly exfoliated by NaOH and formed sin- gle and multi-layered graphite oxide mixture which can be defined as graphene oxide, [TiO]2+ induced by the hydrolysis of Ti(SO4)2 diffused into graphene oxide interlayer by electrostatic attraction. The nucleation and growth of TiO2 crystanites took place at low temperature and TiO2-Graphene Oxide composite was successfully synthesized. Furthermore, the photocatalytic properties of TiO2-Graphene Oxide under the irradiation of UV light were also studied. The results show that the degradation rate of methyl orange is 1.16 mg min^-1 g^-1(refer to the efficiency of the initial 15 rain). Compared with P25 powder, this kind of inter- calation composite owns much better efficiency. On the other hand, the reusable properties and stable properties of TiO2-Graphene Oxide intercalated composite are also discussed in this paper. At last, crystalline structure, interface status, ther- mal properties and microscopic structure of TiO2-Graphene Oxide were characterized by X-ray diffraction (XRD), X-ray photo- electron spectroscopy (XPS), thermogravimetric analysis (TGA), field emission scanning electron microscopy (FESEM) and high-resolution Transmission Electron Microscopy (HRTEM). Also, we have analyzed major influencing factors and mechanism of the composite structures which evidently improve the photocatalytic properties.