有机配体对负载Cu-MOFs棉织物吸附性能影响的研究OA

In order to improve the adsorption performance of cotton fabrics for organic pollutants,1,3,5-benzenetricarboxylic acid(H3 BTC),terephthalic acid(H2 BDC),and 2-amino-terephthalic acid(BDC-NH2)were taken as organic ligands and copper sulfate pentahydrate as metal salta,a series of Cu-MOFs/cotton com-posites loaded with copper-based single ligands,double ligands,and triple ligands were prepared by using layer by layer self-assembly method.The optimal preparation process of Cu-MOFs/cotton composite was determined by taking Methylene Blue as the adsorption decolorization object.The results showed that when the molar ratio of the three organic ligands H3 BTC,H2 BDC and BDC-NH2 was 1∶1∶1,the triple ligand composite Cu-(BTC/BTC/BDC-NH2)/cotton(referred to as 1-Cu MOFs/cotton)had the best adsorption and decolorization effects on Methylene Blue dyeing solution.Characterization tests such as SEM,FT-IR,XRD and SBET confirmed the successful loading of 1-Cu-MOFs crystals onto the cotton with good stability.The adsorption decolorization rate of 8 g/L 1-Cu-MOFs/cotton for 10 mg/L Methylene Blue solution was 97.22%.1-Cu-MOFs/cotton showed good decolorization effects on Reactive Black KN-B,Reactive Red 3BS and Rhodamine B which had similar ini-tial absorbances,but relatively poor decolorization effect on Reactive Brilliant Blue KN-R.