High-efficiency Photocatalytic Performance of Bi/Bi₂Fe₄O₉ Nanocomposites Synthesized by Hydrothermal Method for Degradation of Bisphenol A

【摘要】 Bi/Bi₂Fe₄O₉ nanocomposites consisting of Bi₂Fe₄O₉ nanosheets decorated with Bi nanodots were synthesized by a hydrothermal method.The formation of Bi nanodots on the Bi₂Fe₄O₉ nanosheet surfaces was attributed to the reducibility of 2-methoxyethanol in the precursor solution.Comparative photocatalytic evaluation reveals that the Bi/Bi₂Fe₄O₉ nanocomposites significantly enhance the degradation efficiency（99.0%） of bisphenol A compared with Bi₂Fe₄O₉ nanosheets （64.2%） under 120 min simulated solar irradiation.This remarkable enhancement can be attributed to the established Bi/Bi₂Fe₄O₉ heterojunction structure,which effectively facilitates the separation of photogenerated electron-hole pairs and accelerates interfacial charge transfer between the metallic Bi nanodots and semiconductor Bi₂Fe₄O₉ nanosheets.The synergistic effects arising from this unique architecture ultimately lead to superior photocatalytic performance.更多还原

【Abstract】 Bi/Bi₂Fe₄O₉ nanocomposites consisting of Bi₂Fe₄O₉ nanosheets decorated with Bi nanodots were synthesized by a hydrothermal method.The formation of Bi nanodots on the Bi₂Fe₄O₉ nanosheet surfaces was attributed to the reducibility of 2-methoxyethanol in the precursor solution.Comparative photocatalytic evaluation reveals that the Bi/Bi₂Fe₄O₉ nanocomposites significantly enhance the degradation efficiency（99.0%） of bisphenol A compared with Bi₂Fe₄O₉ nanosheets （64.2%） under 120 min simulated solar irradiation.This remarkable enhancement can be attributed to the established Bi/Bi₂Fe₄O₉ heterojunction structure,which effectively facilitates the separation of photogenerated electron-hole pairs and accelerates interfacial charge transfer between the metallic Bi nanodots and semiconductor Bi₂Fe₄O₉ nanosheets.The synergistic effects arising from this unique architecture ultimately lead to superior photocatalytic performance.更多还原