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Well-crystallized pure perovskite bismuth ferrite (BiFeO 3 ) powders have been synthesized by a facile hydrothermal route at the temperature as low as 130°C with the aid of acetone. In the synthesis, acetone played important roles in the low-temperature synthesis of pure BiFeO 3 . The as-prepared BiFeO 3 powders mainly consisted of cubic particles with the size range from 50 to 200 nm. zero-field-cooled and field-cooled magnetization measurements indicated that pure BiFeO 3 powders showed a spin-glass transition below the freezing temperature. The as-prepared pure BiFeO 3 powders showed weak ferromagnetism and ferroelectricity simultaneously at room temperature. Moreover, the bismuth ferrite BiFeO 3 exhibit efficient photocatalytic activity under visible light irradiation.

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