Study On The Properties Of The Highly Dispersed ZnO And ZnO/Ag Nanomaterials Prepared By Impinging Stream With Surfactant Aided

In this paper, ZnO and ZnO/Ag nanomaterials were preparated by using the self-made microzone impinging streams reactor with microwave reduction, with Zn(NO3)2, NaOH, AgNO3 and C6HsNa3O7 as raw materials, adding the different surfactants in the process of the reaction. The influences of the kinds and dosage of surfactants on the morphology, particle size, dispersion, photocatalytic and photoluminescence properties of ZnO and ZnO/Ag nano materials were investigated. The phase, component and morphology of ZnO and ZnO/Ag prepared under the optimum process conditions were characterized by X ray diffraction(XRD), fourier transform infrared spectroscopy (FTIR), transmission electron microscope (TEM) and scanning electron microscopy (SEM). The main research content is as follows:(1)Adding the Triton X-100 in the process of the reaction, the influences of the concentrations of Triton X-100 on the dispersion, photocatalytic and photoluminescence properties of ZnO nanomaterials were investigated systematically, and the influence of calcining temperature on the photocatalytic property of ZnO was investigated. The influences of the concentrations of Triton X-100 on the morphology, dispersion and photocatalytic properties of ZnO/Ag nanomaterials were investigated. The results indicated that the continuous high efficiency production of ZnO and ZnO/Ag nanomaterials can be achieved by the microzone impinging stream reactor. The Triton X-100 added during the prepared can improve the dispersion and photocatalytic of the ZnO and ZnO/Ag, decrease the size of particle, and do not affect the lattice of ZnO and ZnO/Ag. The ZnO had the best dispersion when the concentration of the Triton X-100 of 1.2×10-3mol·L-1(water),1.6×10-3mol·L-1(ethanol) and 1.6×10-3mol·L-1(cyclohexane). The ZnO had the best photocatalytic property of nanomaterials when the concentration of the Triton X-100 of 1.2×10-3molL·-1. The photocatalytic properties of ZnO after calcinated became worse.The ZnO/Ag had the best photocatalytic property when the concentration of the Triton X-100 of 0.6×10-3mol·L-1. The morphology of ZnO nanoparticles in the optimal conditions was sphere, and the mean particle size was decreased. The morphology of ZnO/Ag was sphere approximatively, and the mean particle size was decreased too.(2) Adding the Tween-60 in the process of the reaction, the influences of the concentrations of Tween-60 on the dispersion, photocatalytic and photoluminescence properties of ZnO nanomaterials were investigated systematically, and the influences of the concentrations of Tween-60 on the morphology, dispersion and photocatalytic properties of ZnO/Ag nanomaterials. The results indicated that the Tween-60 added during the prepared can improve the dispersion and photocatalytic of the ZnO and ZnO/Ag, decrease the size of particle, and do not affect the lattice of ZnO and ZnO/Ag. The ZnO had the best dispersion in water, ethanol, and cyclohexane and the photocatalytic property when the concentration of the Tween-60 of 6×10-2g·L-1 mol·L-1. The ZnO/Ag had the best photocatalytic property when the concentration of the Tween-60 of 6×10-2g·L-1. The morphology of ZnO nanoparticles in the optimal conditions was sphere, and the mean particle size was decreased. The morphology of ZnO/Ag was sphere approximatively, and the mean particle size was decreased too.(3)Adding the sodium oleate in the process of the reaction, the influences of the concentrations of sodium oleate on the dispersion, photocatalytic and photoluminescence properties of ZnO nanomaterials were investigated systematically, and the influences of the concentrations of sodium oleate on the morphology, dispersion and photocatalytic properties of ZnO/Ag nanomaterials. The results indicated that the sodium oleate added during the prepared can improve the dispersion and photocatalytic of the ZnO and ZnO/Ag, and do not affect the lattice of ZnO and ZnO/Ag. The ZnO has the best dispersion when the concentration of the sodium oleate of 3×10-4mol·L-1 (water),2×10-4mol·L-1(ethanol) and 2×10-4mol·L-1 (cyclohexane). The ZnO had the best photocatalytic property of nanomaterials when the concentration of the sodium oleate of 3×10-4mol·L-1, and the morphology of ZnO nanoparticles was sphere, and the mean particle size 26.9nm. The different morphologies of ZnO/Ag were obtained in the different concentration of sodium oleate. The ZnO/Ag had the best photocatalytic when the concentration of the sodium oleate of 3×10-4mol·L-1, the morphology of ZnO/Ag was sphere, and the mean particle size was 100nm.(4)Adding the SDS in the process of the reaction, the influences of the concentrations of SDS on the dispersion, photocatalytic and photoluminescence properties of ZnO nanomaterials were investigated systematically, and the influences of the concentrations of SDS on the dispersion and photocatalytic properties of ZnO/Ag nanomaterials were investigated. The results indicated that the SDS added during the prepared can improve the morphology, dispersion and photocatalytic of the ZnO and ZnO/Ag, and do not affect the lattice of ZnO and ZnO/Ag. The ZnO had the best dispersion when the concentration of the SDS of 6×10-3mol·L-1(water), 6×10-3mol·L-1 (ethanol) and 3×10-3mol·L-1 (cyclohexane), and the best photocatalytic property when the concentration of the SDS of 9×10-3mol·L-1. The ZnO/Ag had the best photocatalytic when the concentration of the SDS of 6×10-3mol·L-1. The morphology of ZnO nanoparticles in the optimal conditions was sphere, and the mean particle size was decreased. The morphology of ZnO/Ag was spheres and some sheets, and the mean particle size was decreased too.