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morphology-controlled growth of A1N One-Dimensional Nanostructures

Journal of Materials Science & Technology 2008年第4期24卷 608-614页

作者： Ting XIE Min YE Xiaosheng FANG Zhi JIANG Li CHEN Mingguang KONG Yucheng WU Lide ZHANG Institute of Tribology Hefei University .of Technology Hefei 230009 China Key laboratory of Materials Physics Institute of Solid State Physics Chinese Academy of Sciences Hefei 230031 China

Aluminum nitride （AIN） nanowires, serrated nanoribbons, and nanoribbons were selectively obtained through a simple chloride assisted chemical vapor deposition process. The morphologies of the products could be controlled by adjusting the deposition position and the flux of the reactant gas. The morphologies and structures of the AIN products were investigated in detail. The formation mechanism of the as-prepared different morphologies of AIN one-dimensional （ID） nanostructures was discussed on the basis of the experimental results.

关键词： Aluminum nitride morphology-controlled growth One-dimensional nanostructure

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Hierarchical porous calcium carbonate microspheres as drug delivery vector

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Progress in Natural Science:Materials International 2017年第6期27卷 674-677页

作者： Hui Yang Yunfeng Wang Tongxiang Liang Yiqun Deng Xiaopeng Qi Honghui Jiang Yangjun Wu Huichang Gao School of Materials Science and Engineering Jiangxi University of Science and Technology School of Medicine South China University of Technology A National Engineering Research Centre for Tissue Restoration and Reconstruction

CaCO;crystals with different hierarchical structure were fabricated by the precipitation of CaCO;in an aqueous solution containing guar gum（GG）. Through adjusting a range of parameters, the size distribution and microstructure of CaCO;were well controlled. Results showed that GG facilitated the formation of the hierarchical hollow sphere through assembling of nanocrystals, while inhibited the growth of CaCO;crystals and restrained phase transition from calcite to vaterite at high concentration of GG(C;) condition; Moreover, increasing reaction temperature led to larger particles and stable crystalline phase formed. According to the results, a morphology map was presented. Furthermore, Drug loading and releasing results ensured porous CaCO;microspheres a promising vector for drug delivery.

关键词： Calcium carbonate Microspheres Phase transformation morphology-controlled growth Biomedical application

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