Response surface methodology analysis of the photocatalytic removal of Methylene Blue using a new Cu(II)-MOF

Journal of Nanoanalysis

مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 05 بهمن 1398

نوع مقاله: Original Research Paper

شناسه دیجیتال (DOI): 10.22034/jna.2020.1877138.1156

نویسندگان

Zahra Mohseni nik¹؛ Majid Ramezani²؛ Saeed Jamehbozorgi^{* 3}؛ Tahere Momeni Esfahani⁴

¹Chemistry Department, Sciences Faculty, Arak Branch, Islamic Azad University,Arak, Iran

²Department of Chemistry, Arak Branch, Islamic Azad University, Arak, Iran

³chemistry Department, Sciences Faculty, Hamedan Branch, Islamic Azad University, Hamedan, Iran

⁴chemistry Department, Science Faculty, Arak Branch, Islamic Azad University, Arak, IRAN

چکیده

A novel metal–organic framework (MOF), with the formula [Cu(II)L]n (L= 4, 4′-diamino diphenyl sulfone), has been synthesized conventionally and hydrothermally methods and characterized by FT-IR, PXRD, EDX, and SEM techniques. The results MOFs were applied for photodegradation of Methylene Blue (MB). The influence of affecting variables, such as initial MB dye concentration (2–8mg L−1), Cu(II)-MOF mass (0.01–0.03 mg), pH (3.0–9.0), and time of irradiation (30–90 min). The photocatalytic degradation efficiency was investigated by the central composite design (CCD) methodology. The results of CCD analysis for optimum values of variables revealed that Cu(II)-MOF mass was 0.025g, the initial concentration of MB was 3.51 mg L−1, pH was 4.50 and irradiation time was 75 min.Under the optimum conditions, the photocatalytic MB degradation percentage at the desirability function value of 1.0 was found to be 70%. In addition, the obtained R2 value of 0.97 in the regression analysis showed a high photocatalytic efficiency of the proposed method for MB degradation.

کلیدواژه‌ها

Cu(II)-MOF؛ Response surface methodology (RSM)؛ Degradation pathway؛ Photocatalyst؛ Methylene Blue