METHOD OF MANUFACTURING LAYERED NANO STRUCTURES AND LAYERED NANO STRUCTURES PREPARED THEREBY

摘要

A preparation method of layered nano structures and layered nano structures prepared thereby are provided to obtain homogeneous nano structure at lower temperature in a short time by coating nano raw material on nano support in the presence of multibubble sonoluminescence. A preparation method of layered nano structures comprises steps of coating nano raw material on nano support in the presence of multibubble sonoluminescence. The nano support is metal oxide particle having diameter of at most 50nm, which is selected from TiO2, ZnO, ZrO, Al2O3, Fe2O3, Fe3O4, Ga2O3, SnO2, Sb2O3, SiO2, MnO2, NiO2 and mixtures thereof. The nano raw material is metal chalcogenide of metal sulfate, metal selenide or metal telluride, which is selected from a group consisting of CdS, ZnS, HgS, PbS, InS, AgS, CuS, CdSe, ZnSe, HgSe, PbSe, InSe, AgSe, CuSe, CdTe, CdTe, ZnTe, HgTe, PbTe, InTe, AgTe, CuTe and mixtures thereof. For the multibubble sonoluminescence, the frequency of the supersonic wave is maintained at 10-20kHz, the power is maintained at 110-220W, the pressure is maintained at 1-2 atm by feeding the reaction reservoir with noble gas, and the temperature is maintained at 20-70deg.C. The preparation method of layered nano structures is carried out in situ by mixing metal oxide, chalcogenide precursor and metal oxide resolved in a solvent in the reaction reservoir while performing supersonic wave reaction for 20-30 minutes.