文献类型：期刊文献

英文题名：Direct synthesis of mesoporous Fe₃O₄ through citric acid-assisted solid thermal decomposition

作者：Liu, Xiaohui[1];Guo, Yong[1];Wang, Yangang[1];Ren, Jiawen[1];Wang, Yanqin[1];Guo, Yanglong[1];Guo, Yun[1];Lu, Guanzhong[1];Wang, Yunsong[1];Zhang, Zhigang[1]

机构：[1]E China Univ Sci & Technol, Res Inst Ind Catalysis, Adv Mat Lab, Shanghai 200237, Peoples R China

年份：2010

卷号：45

期号：4

起止页码：906

外文期刊名：JOURNAL OF MATERIALS SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000273033800006)】；

基金：This work was supported financially by the New Century Excellent Talents in University (NCET-05-415), National Natural Science Foundation of China (20673037), the Commission of Science and Technology of Shanghai Municipality (08JC1407900), China.

语种：英文

摘要：A simple and inexpensive approach to synthesizing mesoporous Fe3O4 is developed by using citric acid-assisted solid thermal decomposition of ferric nitrate. The structure and magnetic property of mesoporous Fe3O4 were characterized by XRD, FT-IR, N-2 adsorption-desorption isotherms, TEM, and vibrating sample magnetometer. It was shown that the decomposition of citric acid results in the formation of the mesoporous structure and narrow pore-size distribution. The reducing atmosphere which created by the decomposition of the ferric nitrate-citric acid complex caused the partial reduction of Fe(III) to Fe(II) and in turn the formation of Fe3O4. Moreover, the strength of the coordination between carboxyl group and Fe3+ also affected the phase composition of the iron oxides.