Characterization of Vanadium-Doped BaBi4Ti4O15 Prepared by Molten KCl Salt Method

Abstract

<p>One of the potential properties of the Aurivillius compound is photocatalyst. The four-layered Aurivillius compound BaBi<sub>4</sub>Ti<sub>4</sub>O<sub>15</sub> has a bandgap energy of 3.2 eV caused having work function in the UV light area. The strategy to decrease the bandgap energy is doping with metal elements such as vanadium (V). In this research, vanadium-doped BaBi<sub>4</sub>Ti<sub>4</sub>O<sub>15</sub> (BaBi<sub>4</sub>Ti<sub>4-</sub><em><sub>x</sub></em>V<em><sub>x</sub></em>O<sub>15</sub>) (<em>x</em>= 0, 0.05, 0.1, and 0.15)) compounds was synthesized through the molten KCl salt method. The diffractogram samples showed that BaBi<sub>4</sub>Ti<sub>4-</sub><em><sub>x</sub></em>V<em><sub>x</sub></em>O<sub>15</sub> (<em>x</em>= 0, 0.05, 0.1, 0.15) had been successfully obtained but still found impurities TiO<sub>2</sub> (rutile phase) at <em>x</em>= 0, 0.05, 0.1, 0.15, and Bi<sub>4</sub>V<sub>2</sub>O<sub>11</sub> at <em>x</em>= 0.15. The SEM image showed that the particle has plate-like morphology. The UV-Vis DRS spectrum showed that vanadium-doped BaBi<sub>4</sub>Ti<sub>4</sub>O<sub>15</sub> has lower bandgap energy.</p>

Synthesis and characterization of plate-like vanadium doped SrBi4Ti4O15 prepared via KCl molten salt method

“…AgNO3 test was conducted to identify the salt content of KCl. Finally, the free salt sample was dried using an oven at 80˚C for 2 hours [30].…”