Photo Degradation of methylene blue in aqueous solution by a new Cu(II)-MOF based on diaminodiphenyl sulfone ligand through response surface methodology (RSM)
محورهای موضوعی : Journal of Nanoanalysis
Zahra Moseni nik
1
(Department of chemistry, Faculty of sciences, Arak branch, Islamic Azad University, Arak, Iran)
Saeed Jamehbozorgi
2
(Department of chemistry, Faculty of sciences, Hamedan branch, Islamic Azad University, Hamedan)
Majid Ramezani
3
(Department of chemistry, Faculty of sciences, Arak branch, Islamic Azad University, Arak, Iran)
Tahere Momeni Esfahani
4
(Department of chemistry, Faculty of sciences, Arak branch, Islamic Azad University, Arak, Iran)
کلید واژه: Cu(II), MOF Response surface methodology (RSM) Degradation pathway Photocatalyst Methylene Blue,
چکیده مقاله :
A novel metal–organic framework (MOF), with the formula [Cu(II)L]n (L=4, 4′-diamino diphenyl sulfone), has been synthesized conventionally andhydrothermally methods and characterized by FT-IR, PXRD, EDX, and SEMtechniques. The results MOFs were applied for photodegradation of MethyleneBlue (MB). The influence of affecting variables, such as initial MB dyeconcentration (2–8mg L−1), Cu(II)-MOF mass (0.01–0.03 mg), pH (3.0–9.0), andtime of irradiation (30–90 min). The photocatalytic degradation efficiency wasinvestigated by the central composite design (CCD) methodology. The resultsof CCD analysis for optimum values of variables revealed that Cu(II)-MOF masswas 0.025g, the initial concentration of MB was 3.51 mg L−1, pH was 4.50 andirradiation time was 75 min.Under the optimum conditions, the photocatalytic MBdegradation percentage at the desirability function value of 1.0 was found to be70%. In addition, the obtained R2 value of 0.97 in the regression analysis showeda high photocatalytic efficiency of the proposed method for MB degradation.
