介孔氧化铝空心球的制备及表征
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国家自然科学基金(20906019);河北省高等学校科学技术研究项目(QN20131069,ZD20131032)


Synthesis and characterization of hollow alumina spheres with mesoporous structure
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    摘要:

    以掺氮碳球为硬模板,F127为软模板,廉价的Al(NO3)3·9H2O为铝源,成功制备出具有介孔结构的氧化铝空心球。通过 SEM, N2吸附-脱附,XRD,FT-IR 表征显示,其粒径大小均一,均在500 nm左右;壳层具有蠕虫状的介孔结构,且主要为无定型结构的氧化铝;介孔孔径为17 nm,比表面积为153 m2/g,孔容为0.67 cm3/g。详细讨论了介孔氧化铝空心球的形成机理。

    Abstract:

    Hollow alumina spheres with mesoporous structure were successfully prepared by using N-doped carbon spheres as hard template, triblock copolymer F127 as soft template and aluminum nitrate as precursors. The morphology and structure of hollow mesoporous alumina sphere were characterized by scanning electron microscope (SEM), N2 absorption and desorption, X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectra, which shows that the as-prepared hollow alumina spheres have uniform pore sizes of 500 nm, and shell thickness with disordered structures possesses the wormlike mesoporous, indicating the existence of amorphous structure, and this sample has a pore size distribution of 17 nm, BET surface area of 153 m2/g, and pore volumes of 0.67 cm3/g. The formation mechanism of hollow mesoporous alumina spheres is discussed in detail.

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陈爱兵,于奕峰,王岩岩,邢亭亭,于运红,李月彤.介孔氧化铝空心球的制备及表征[J].河北科技大学学报,2014,35(4):349-353

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  • 收稿日期:2014-04-18
  • 最后修改日期:2014-05-16
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  • 在线发布日期: 2014-07-08
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