One-pot synthesis of magnetically separable Bi/Fe oxide-based composites for effective photocatalytic removal of BPA and RO16 dye under 35W Xe-lamp

Abstract

One-pot synthesis of magnetic Bi/Fe oxide composites photocatalyst was accomplished via the sol–gel process followed by calcination at various temperatures (350–550\u2009°C). The as-prepared nanoparticles were characterized by a variety of techniques. The result of magnetic measurement indicates the magnetic properties of photocatalysts. The observed strong absorption in the visible region will enable these composites to be potentially used as promising visible-driven photocatalyst. The photocatalytic efficiency of these composites was evaluated by monitoring the photodegradation of bisphenol A (BPA) and reactive orange 16 (RO16) dye under visible light illumination. The results revealed that Bi/Fe-450 is the best photocatalyst in this work from its ability to degrade BPA (15\u2009ppm) up to 100% within 1\u2009h (kapp\u2009=\u20090.0951\u2009min−1) and RO16 (5\u2009ppm) up to 98% within 3\u2009h (kapp\u2009=\u20090.0184\u2009min−1), respectively. The main reactive species responsible for the photocatalytic degradation of both BPA and RO16 were identified to be the hole (h+) species. In addition, the magnetic property of the as-prepared Bi/Fe oxide-based composite provides the ease of separation of the photocatalyst from the reaction mixture. Facile synthesis of magnetically Bi–Fe oxide-based photocatalyst via sol–gel method following with calcination. Effective photocatalytically degradation of reactive orange 16 and bisphenol A by Bi–Fe oxide-based photocatalyst under visible light. The major reactive species for photodegradation is hole. Ease of separation of the photocatalyst from polluted solution by magnetic. Facile synthesis of magnetically Bi–Fe oxide-based photocatalyst via sol–gel method following with calcination. Effective photocatalytically degradation of reactive orange 16 and bisphenol A by Bi–Fe oxide-based photocatalyst under visible light. The major reactive species for photodegradation is hole. Ease of separation of the photocatalyst from polluted solution by magnetic.