Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub> crystalline ceramic was successfully synthesized through a soft chemical route at lower sintering temperature for analysis of photocatalyti...Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub> crystalline ceramic was successfully synthesized through a soft chemical route at lower sintering temperature for analysis of photocatalytic behavior with respect to adsorption of Congo Red (CR) in the presence of UV-VIS irradiation. The single-phase formation of Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub> ceramic was confirmed by powder X-ray diffraction studies and particle size observed by TEM analysis was found to be 148 ± 5 nm which reveals the crystalline nature of the materials. Additionally, the photocatalytic activity of Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub> ceramic was evaluated by the degradation of Congo Red in presence of visible light. The optical band gap (Eg) of the synthesized materials was found to be 1.8 eV. It exhibited greater photocatalytic activity than other synthesized materials like BiFeO<sub>3</sub> as well as TiO<sub>2</sub> due to a smaller band gap (1.8 eV). Furthermore, process variables such as pH.展开更多
文摘Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub> crystalline ceramic was successfully synthesized through a soft chemical route at lower sintering temperature for analysis of photocatalytic behavior with respect to adsorption of Congo Red (CR) in the presence of UV-VIS irradiation. The single-phase formation of Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub> ceramic was confirmed by powder X-ray diffraction studies and particle size observed by TEM analysis was found to be 148 ± 5 nm which reveals the crystalline nature of the materials. Additionally, the photocatalytic activity of Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub> ceramic was evaluated by the degradation of Congo Red in presence of visible light. The optical band gap (Eg) of the synthesized materials was found to be 1.8 eV. It exhibited greater photocatalytic activity than other synthesized materials like BiFeO<sub>3</sub> as well as TiO<sub>2</sub> due to a smaller band gap (1.8 eV). Furthermore, process variables such as pH.
