溶剂偶极矩对CdS/N,N'-(3-硝基)苯基硫脲纳米复合材料形貌和性能的影响

In this paper, CdS/N, N' -di (3-nitro) phenylthiourea (D (3-nitro) PTU) nanocomposites were synthesized by reacting CdCl2 with in situ produced H2S from reaction of 3-nitroaniline and carbon disulfide at 50 C in solvents with various dipole moment. By discussing effects of solvent dipole moment on morphology and properties, novel nanowires of CdS/D (3-nitro) PTU nanocomposite containing organic outer layer and CdS inner layer were obtained. The nanocomposites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED), energy dispersive X-ray spectroscopy (EDAX), thermogravimetric (TG), Fourier transform infrared (FTIR) and UV-vis absorption spectra. A plausible mechanism that the extending D (3-nitro) PTU molecules in DMF induce formation of the nanowires with help of high dipole moment DMF by attracting Cd2+ with 3-Nitroaniline firstly. Emission intensity in photoluminescence (PL) spectra of D (3-nitro) PTU could be largely increased by small amount of CdS in the nanocomposites.