Fabrication of a Nacre-Like Aragonite/PAA Multilayer Film on a Nacre Substrate
Fabrication of a Nacre-Like Aragonite/PAA Multilayer Film on a Nacre Substrate
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DOI：
10.1021/cg100709m
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发表时间：
2010-11
影响因子：
3.8
通讯作者：
A. Hayashi;Toshihiro Nakamura;Tomoaki Watanabe
中科院分区：
文献类型：
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作者：
A. Hayashi;Toshihiro Nakamura;Tomoaki Watanabe
我们设计了一种在天然珍珠质基底上制造人造珍珠质结构的新工艺。天然珍珠状文石 (CaCO3) 和聚丙烯酸 (PAA) 交替层的薄膜是在室温下从溶液中直接在文石珍珠质基底上制备的。在 CaCl2 溶液和 PAA 滴涂中交替重复文石生长，得到交替文石纳米堆叠和多孔 PAA 的多层无机/有机纳米复合膜。通过场发射扫描电子显微镜对薄膜的微观结构和纳米结构进行了表征。通过检查制造的文石型菱沸石 (SrCO3) 纳米堆来确定沉积文石的取向程度。 X 射线衍射分析表明，纳米堆叠的晶体 c 轴垂直于基底表面。透射电子显微镜选区电子衍射分析表明，菱锶矿纳米粒子的 a 轴和 b 轴...
We devised a new process for fabricating an artificial nacreous structure on a natural nacre substrate. A film of alternating layers of natural nacre-like aragonite (CaCO3) and poly(acrylic acid) (PAA) was fabricated directly on an aragonitic nacre substrate from a solution at room temperature. Alternate repetition of aragonite growth in a CaCl2 solution and PAA drop coating gave a multilayer inorganic/organic nanocomposite film of alternating aragonite nanostacks and porous PAA. The microstructure and nanostructure of the film were characterized by field-emission scanning electron microscopy. The degree of orientation of deposited aragonite was determined by examination of fabricated aragonite-type strontianite (SrCO3) nanostacks. Analysis by X-ray diffractometry shows that the crystallographic c axis of the nanostacks is oriented perpendicular to the substrate surface. Analysis by transmission electron microscopy selected-area electron diffractometry shows that the a and b axes of the strontianite nanos...