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论文类型：期刊论文
发表时间：2002-01-01
发表刊物：Kao Teng Hsueh Hsiao Hua Heush Hsueh Pao/ Chemical Journal of Chinese Universities
收录刊物：Scopus、PKU、ISTIC
卷号：23
期号：3
页面范围：348-
ISSN号：02510790
摘要：Shape-control has been much more difficult to be achieved in the synthesis of nanoparticles. For the aim to establish whether a favorable combination of functional organic molecules and inorganic precursors might produce predictable particle morphology, several carboxy-containing organic compounds, such as acetic acid(AcOH), acetoacetic ester (EAA), poly (amidoamine) dendrimer (PAMAM) and the like, have been investigated in both organic solvent and aqueous solution in the synthesis of Al2O3 nanoparticles from aluminium alkoxide and aluminium nitrate precursors, respectively. The spherical particles with different size-ranges (<10 nm, 20-40 nm, 50-100 nm), and the fibrous with changed aspect ratios (from 100 nm/4 nm to 10 nm/4 nm) were observed and characterized, whose distribution was dependent on the property of organic compounds and its concentration used. A possible shape-control mechanism was proposed and discussed.