阴离子在形成纺锤形α-FeOOH中的作用

无机材料学报, 1998, 13(3): 445-448.

阴离子在形成纺锤形α-FeOOH中的作用

朱昊果 , 陆轻铱 , 曾京辉 , 宋宝珍 , 曾桓兴

中国科学技术大学材料科学与工程系

合肥230026

+中国科学院化工冶金所

Dept. of Material Science Bngineering

USTC Hefei 230026 China

关键词：纺锤形α－FeOOH , carbonic ion , hydroxy aggregate , null

Function of Anion in the Synthetic Process of Spindle-shaped α-FeOOH

ZHU Hao-Guo , LU Qing-Yi , ZENG JingHui , SONG Bao-Zhen , ZENG Huan-Xing

Keywords： spindle α-FeOOH , 碳酸根离子 , 氢氧根离子 , 凝并

通过用不同碱类或混合碱分别和FeSO₄反应，合成了纺锤形α－FeOOH；用TEM观察产物的形貌，结果显示：纺锤形α－FeOOH生成的轴比与［OH^-］有关，［OH^-］越高，形成的轴比越大，的浓度越大，短轴越长，轴比减小，越趋于椭球形.形成纺锤形粒子的本质原因可能是通过离子的链接凝并作用.

Spindle-shaped α-FeOOH was prepared from FeSO₄ and different alkalis or mired alhalisrespectively. The morphology of a^-FeOOH was observed with TEM. The result shows that its axisratio related to [OH^-], the higher concentration of [OH^-], the longer axis ratio; α-FeOOH waslike the ellipsoid with caxbonic concentration increasing, because the short tals became Ionger andxis ratio smaller. The essential cause of formating spindle-shaped α-FeOOH particles was thecoagulation of CO ion bond.

参考文献

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