Characterization of γ-Fe_2O_3 nanoparticles prepared by transformation of α-FeOOH

• 来源期刊: 科学通报(英文版)
• 学科: 化学
• 年，卷（期）: 2011,（22）
• 页码范围: 2383-2388
• 页数: 6页
• 分类号: O614.811
• 语种: 中文

摘要

γ-Fe2O3 nanoparticles were successfully synthesized by a chemically induced transformation of α-FeOOH.In this method,the precursor(α-FeOOH)was prepared by chemical precipitation,and then treated with a mixed FeCl2/NaOH solution to produce the nanoparticles.X-ray diffraction indicated that when the precursor was treated with FeCl2(0.22 mol/L)and NaOH(0.19 mol/L),pure γ-Fe2O3 nanoparticles were obtained.However,when the concentration of FeCl2 was