Preparation Of Molybdenum And Rhenium Functional Nanomaterals In The W/O Microemulsion System

In this paper, microemulsion system hydrochloric acid as medium selective extraction separation of molybdenum rhenium. We were selected N1923, N2125 as extracting agent, OP-10, TBP as surfactants, isoamyl alcohol as co-surfactant, n-heptane as the oil phase, sodium chloride solution as the aqueous phase thermodynamically stable W/O type microemulsion, the use of W/O microemulsion extraction and separation of Re (VII) and Mo (VI) conduct in-depth research and discussion, and functional nanomaterials load Re or Mo microemulsion prepared directly. This work summarized as follows:1. N1923 and N2125 were selected as extraction solvent for preparing W/O microemulsion. It determines the maximum moisture content and the percolation threshold microemulsion, and the optimum conditions for the extraction of rhenium extraction rate of utilization conductance method. Determination of liquid feed through simulation experiments found that the extraction rate to N1923 and N2125 as an extracting agent two microemulsion system of Re (VII) of 83% and 71%, respectively, without extraction Mo (VI), realized both effective separation. Also discussed the reaction time, the type of reactant concentrations, pH, extraction agent to influence the morphology of nanomaterials ReS2 prepared in microemulsion factors affect the order of importance:the extraction agent> pH> reaction time> reactant concentrations. By XRD, SEM, TEM for ReS2 prepared nanoparticles were characterized ReS2 microemulsion prepared from a diameter of 20～50nm ball has grown to a length of 100～200nm, a width of 10～50nm nanorods.2. Use N2125 as extractant, TBP surfactant preparation N2125/TBP/isoamyl alcohol/n-heptane/NaCl W/O microemulsion. microemulsion method utilizing conductance percolation threshold and maximum water content, optimal conditions for the extraction of molybdenum, molybdenum discovery extraction rate can reach 99%. Also discussed the concentration of acid precipitation temperature, calcination temperature, reactants, acidity preparation MoS2 affect the morphology of nanomaterials in microemulsion factors in order of importance are:the calcination temperature> pH> acid sink temperature> concentration of reactants. By XRD, SEM, TEM, DLS prepared for MoS2 nanoparticles were characterized. Investigated the calcination temperature on MoS2 nano crystallite size and morphology. The results showed that the calcination temperature of 750℃, heat 2h, MoS2 crystallite size of nano-scale diameter of 100nm nanoparticles.3. Using MoS2 said microemulsion system prepared as synthesized Ti02/MoS2@ zeolite composite. Respectively XRD, FT-IR, UV-Vis, AFS, XPS, N2 adsorption, SEM, TEM and other methods on the structure and properties of the material were characterized, the results show that TiO2/MoS2@ zeolite material prepared in particle size 500nm. Since MoS2 particle size prepared by microemulsion system of smaller, smaller size of MoS2 and TiO2 uniformly distributed on the surface of the zeolite, increasing the TiO2/MoS2@zeolite composite material degradation contact area and improve the degradation rate, better aspects of adsorption of organic pollutants, thereby MoS2 microemulsion system as a raw material for preparing synthetic TiO2/ MoS2@zeolite composite photocatalytic degradation of methyl orange dye catalytic efficiency and reaction rate constant is superior to TiO2/MoS2-hydrothermal@ zeolite composite material.