حذف كاهشي كروم (Ⅵ) از آب در حضور پلي‌اكسومتالات‌هاي كگين استخلاف شده با فلزات واسطه قرار گرفته بر روي كربن نيتريد گرافيتي

In this work, Keggin-type polyoxometalates substituted with transition metals (M-POMs) were immobilized on g-C₃N₄ to form hybrid photocatalysts, aiming to enhance charge separation, stability, an‎d light absorption capacity. The prepared composites were thoroughly characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), UV-Vis diffuse reflectance spectroscopy (DRS), an‎d elemental analysis. Photoreduction experiments under visible-light irradiation demonstrated that FePOM@g-C₃N₄ exhibited superior Cr(VI) removal efficiency compared to other prepared catalysts. The enhanced performance is attributed to the synergistic interaction between POM an‎d g-C₃N₄, facilitating more efficient electron transfer an‎d reducing recombination rates. These findings suggest that POM@g-C₃N₄ hybrid materials hold strong potential for scalable, sustainable, an‎d effective treatment of industrial wastewater contaminated with Cr(VI), providing a promising pathway for real-world environmental remediation.

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