Studies On The Construction,Adsorption And Photocatalytic Performance Of Functional Complexe Materials Based On Sulfonic Acid

Due to the increasingly serious water pollution problems,the traditional water treatment technology is facing great challenges.The use of new environmental material with degradation or adsorption of organic pollutants to assist in traditional water treatment technology solve the problem of water pollution,which has become scientists research hot spots.Therefore,the research new environmental materials has become the key for the application of new technology in water treatment.The functional complex is a kind of new material which is composed of metal ions and organic ligands.By adjusting the metal ions and organic ligands,complexes with different structure be formed,sulfonic acid ligand as the carrier of structure and function,has an important influence on complexes of the structure and properties.By choosing suitable sulfonic acid ligand and transition metal,12 new complexes functional materials have been synthesized.Complexes 1-12 were characterized via FT-IR spectroscopy,elemental analysis,X-ray single-crystal diffraction,thermal analysis,and structure.By selection the typical dyes as adsorption and photocatalytic degradation target material,to verify the adsorption or photocatalytic performance of different complexes,and to explore the adsorption or photocatalytic mechanism.The main research results of this paper are as follows:Use three organic ligands based on sulfonic group,?Anthraquinonl-1,5-disulfonic-Acid,Anthraquinonl-2,6-disulfonic-Acid,andAnthraquinonl-2,7-disulfonic-Acid?,12 new complexes functional materials have been synthesized and characterized.Through these characterizations,the composition and structure of the synthetic materials are basically confirmed.And the experimental evidence for the possible potential properties and the relationship between the properties and the structure are provided.From the UV-visible spectroscopy,7 complexes,namely {[Cu?AQ-2,7-DAD??1,4-BIYB?₂]_n·nH₂O?1?,[Cu?1,4-BIYB?₂?AQ-2,7-DAD?]_n·nH₂O?2?,[Cd?1,2-BIYB?2·?H₂O?₂]_n·n?AQ-1,5-DAD??5?,[Cd?AQ-1,5-DAD??1,3-BIYB?₂]_n?6?,[Cd?1,3-BIYB??H₂O?]_n·n[?AQ-1,5-DAD?·?H₂O?]?7?,[Zn?1,4-BIYB?₂]_n·n[?AQ-1,5-DAD?·6H₂O]?8?,[Zn?1,4-BIYB?₂]_n·n[?AQ-1,5-DAD?·6H₂O]?AQ-2,6-DAD?]n?10?},have a broad and strong absorption peak in the visible range,and the bandgap Eg is 1.95-2.65 eV calculated using the Kubelka-Munk function.Under the visible light irradiation,7 kinds of complexes as photocatalytic material to degrade target pollutants of methylene blue and Pichanghong 2R.The results showed that the?1?and?10?have obvious degradation properties to the Pichanghong 2R,and the degradation rates were 96% and 97% after 5 hours,respectively.And the?2?,?5?,?6?and?7?have obvious degradation properties to the methylene blue.After 50 minutes,the degradation rate of materials?2?to degrade methylene blue was 97%.After 8 hours,the degradation rate of?5?,?6?,?7?and?8?to degrade methylene blue wrer about 98%.After the reaction of?8?to degrade methylene blue 12 hours,the degradation rate was 99%.The 5 kinds of complexes,namely {[Mn?PHEN?₂?AQ-2,7-DAD?]_n·nH₂O?3?,[Co?PHEN?2?AQ-2,7-DAD?·H₂O]_n·nH₂O?4?,[Cd?2,2?-BPY?₂?AQ-2,6-DAD?]_n·n H₂O?9?,[Cd?4,4?-BPY?₂?AQ-2,6-DAD?·H₂O]_n?11?,[Mn?1,3-DPP?₂?H₂O?₂]_n·n[?H₂O??AQ-2,6-DAD?]?12?},are used for the experimental research of adsorption methylene blue solution.The best concentrations of 5 material adsorption of methylene blue solution were obtained,through the adsorption effect experiment of different concentrations of methyl blue.The experimental measured Langmuir adsorption isotherm,andSpecific surface area were calculated for five complexes.Experiments show that the adsorption methylene blue of five materials is in accordance with the the secondary dynamic adsorption model.