Synthesis And Performance Of Environmental Function Materials Based On Phenanthroline

As we all know, water pollution is very serious in China due to a large number of heavy metals and organic pollutants dispersing in water. These pollutants seriously endanger people's health, life, and works. Phenanthroline with special N, N configuration can chelate with the metal ions to form stable complexes. Besides,Phenanthroline has a strong planar and conjugated structure, which is a kind of excellent electron transport material. It is easy to prepare derivants of phenanthroline because its structure is easy to be modified. Therefor, it is widely used in the fields of adsorbent materials and optoelectronic materials.The main work of this paper is to synthesize three kinds of phenanthroline derivatives and complexs together with other substances. XRD, SEM and FTIR were utilized to characterize the three kinds materials. The adsorption or light composite materials catalytic properties were investigated. The main contents are shown as follows:1.A novel composite comprised of two functional parts was prepared in this study. The composite shows high adsorption ability toward Cu(II) and Fe(II),furthermore, it can qualitatively and quantitatively detect them in trace concentration.SEM, FTIR and XPS were used to investigate physicochemical properties of the composite. A batch sorption experiments were conducted to study the influence of various factors, such as pH, presence of coexisting anions, contacting time and initial metals concentration. The results indicate that the adsorption process fits well to the Langmuir model, and the kinetic data could be described very well by pseudo-second-order kinetic model. The mechanism of adsorption was discussed as well. The present study provides a simple method to prepare smart adsorbents, which are equipped with adsorbate indicator.2.TiO2 modified by 1,10-phenanthroline(phen) and Phenanthroline ferrous complexes were prepared by hydrothermal method. FTIR patterms reveal that TiO2 was successfully modified Phenanthroline. SEM imagines show that TiO2, phen-TiO2 and Fe2+-phen-TiO2 have a spherical structure. Phenanthroline and Fe2+-phen turn TiO2 into mixed crystal phase from pure anatase. Degradation experiments of MO under the irradiation of visible light show that phenanthroline is beneficial to TiO2 for responsing to visible light. At the mole ratio phen : Tetrabutyl titanate = 0.17, catalytic effect of phen-TiO2 is determined to be 83%, while the catalytic degradation ofFe2+-phen-TiO2 is 94%.3.5-amino-1,10-phenanthroline((phen(NH2)) is a typical phenanthroline derivatives. FTIR shows phenanthroline successfully modified TiO2. SEM results indicate morphology of TiO2, phen(NH2)-TiO2 and Fe2+-phen(NH2)-TiO2 are spherical.Modified by amino phenanthroline and its Fe2+ complexes turn TiO2 into a mixed crystal phase from anatase. Degradation experiments of MO under irradiation of visible light show that NH2-Phenanthroline loading is beneficial to TiO2 for responsing to visible light. At the mole ratio phen : Tetrabutyl titanate2 = 0.05, Being illuminated 120 min, catalytic effect of Fe2+-phen(NH2)-TiO2 is determined to be 91%,while being illuminated 80 min, the catalytic degradation of Fe2+-phen-TiO2 can reach as high as 90%.Comparing degradation efficiency of phen(NH2)-TiO2 and phen-TiO2, one can see under the same illumination time, effeiciency of phen(NH2)-TiO2 is higher 8pecent than that of phen-TiO2, which indicates amidogen play an important role to improve the composite performance. It may result from effective increase of conjugated system.