دانشگاه آزاد اسلامی واحد تهران جنوب

صفحه اصلی / اولین کنفرانس ملی شیمی، نانو مواد، پلیمر- چالش ها و کاربردها

Fabrication of Novel WO3 /NiCo2O4 magnetic photocatalysts with enhanced visible-light driven photocatalytic activity in MB degradation from aqueous solution

نویسندگان :

Narjes Pourabed¹ Nasim Rahmati² Ali Mohammad-khah³

1- دانشگاه گیلان 2- دانشگاه گیلان 3- دانشگاه گیلان

کلمات کلیدی :

dye،WO3،nanocomposite،photocatalyst،NiCo2O4

چکیده :

This work presents the preparation and characterization of novel synthesized Tungsten trioxide and Nickel Cobaltite hybrid(termed as WO3/NiCo2O4) and investigates its photocatalytic activity for Methylene Blue (MB) decomposition under visible radiation. visible irradiation were done by a 200W Tungsten lamp with UV cut-off filter to provide visible light with λ ≥ 420 nm (Philips, Classic GE). WO3/NiCo2O4 nanopowder was synthesized by hydrothermal method. Several techniques, such as XRD,SEM,TEM,BET,DRS and VSM were used to characterize the structure and morphology of the products.The WO3/NiCo2O4 photocatalyst exhibit enhanced photocatalytic removal efficiency towards the target pollutant in comparison of pristine NiCo2O4 and WO3. It showed 97.17% degradation of MB dye from aqueous solution in 180 min under visible radiation. The advantage of the above research is the use of this photocatalyst to increase the efficiency of wastewater treatment and lower costs to remove colored pollutants.To reuse the synthesized sample for multiple cycles in the photocatalytic process, the synthesized material must have magnetic properties.The magnetic separation of WO3/NiCo2O4 nanocomposite dispersed in aqueous solution by employing a permanent magnet to provide magnetic field is possible.