Direct Fabricaton of Ceramics Nano-Composites by Solution Processing

通过溶液加工直接制备陶瓷纳米复合材料

• 批准号: 16360323
• 负责人: YOSHIMURA Masahiro
• 金额: $ 6.98万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16360323/
• 关键词: titanate oxide; apatite; nano particle; nanocomposit; zirconia; ceria; amorphous carbon; patterning; アモルファスカーポン; ソフトプロセス; セラミックス; 溶液プロセス; ナノカーボン; 微粒子; 低環境負荷; 無機材料

This study aimed direct fabrication of ceramics nano-composites and/or nano-hybrids by Solution Processing. Following results have been obtained :1) TiO_2/hydroxyapatite nano-compositesTo combine photocatalitic activity of TiO_2 and chemical and biological absorption of hydroxyapatite, their nano-composites have been fabricated in a single step in a solution. Calcium carbonate powders were hydrothermally treated at 100-180℃ in the mixture of H_3PO_4 and water soluble Ti complex solution Anatase nanocrystals with 20 nm width and 60 nm length have been deposited on the surface of hydroxyapatite micro-crystals with severe μm size. Theses composites showed higher photocatalytic activities than TiO_2 only.2) Nano-particles of CeO_2-ZrO_2 Solid SolutionsIn the advance of nano-particle synthesis, we have succeeded to fabricate the nano-particle of metastable tetragonal solid solutions in the CeO_2-ZrO_2 system, by hydrothermal methods at 100 - 150℃ for their co-precipitates.3) Carbon nano-cells and patternsBy applying the electro-discharge in non-aqueous solvents, we could succeed to obtain metal encapsulated carbon nano-cells with 10-100 nm in size, and a pattern of ammorphous carbon directly on conducting substrates. It is very interesting that carbon patterning could be established in liquid phase.

本研究旨在通过溶液加工直接制备陶瓷纳米复合材料和/或纳米杂化材料。1）TiO_2/羟基磷灰石纳米复合材料为了将TiO_2的光催化活性与羟基磷灰石的化学和生物吸附作用结合起来，在溶液中一步合成了TiO_2/羟基磷灰石纳米复合材料。在H_3PO_4和水溶性钛络合物溶液的混合溶液中，于100-180℃对碳酸钙粉体进行水热处理，在粒径为μm的羟基磷灰石微晶表面沉积了宽度为20 nm、长度为60 nm的锐钛矿型纳米晶。2）CeO_2-ZrO_2固溶体纳米粒子在纳米粒子合成方面，我们成功地在CeO_2-ZrO_2体系中制备了亚稳四元系固溶体纳米粒子，在100 - 150℃水热条件下制备碳纳米管共沉淀物。3）碳纳米管的制备通过在非水溶剂中放电，我们可以成功地获得尺寸为10-100 nm的金属包封的碳纳米电池，以及直接在导电基底上的无定形碳图案。非常有趣的是，碳图案化可以在液相中建立。

项目成果

Tetragonal nanocrystals from the Zr0.5Ce0.5O2 solid solution by hydrothermal method

• DOI: 10.1021/jp050047c
• 发表时间: 2005-04-07
• 期刊: JOURNAL OF PHYSICAL CHEMISTRY B
• 影响因子: 3.3
• 作者: Ahniyaz, A;Watanabe, T;Yoshimura, M
• 通讯作者: Yoshimura, M

Soft Solution Processings : Concept and Realization of Direct Fabrication of Shaped eramics (Nano-Crystals, Whiskers, Films, and/or Patterns) in Solutions wihtout Post-Firing

软溶液加工：在溶液中直接制造成形陶瓷（纳米晶体、晶须、薄膜和/或图案）而无需后烧制的概念和实现

• 发表时间: 2006
• 期刊: J.Mater.Sci. 41
• 作者: N.Sakamoto;T.Fujino;T.Watanabe;M.Yoshimura;Masahiro Yoshimura
• 通讯作者: Masahiro Yoshimura

Powder-less Processing of Nano-Ceramics : How We Can Realize Their Direct Fabrication from Solutions and/or Melts

纳米陶瓷的无粉加工：我们如何实现从溶液和/或熔体直接制造纳米陶瓷

• 发表时间: 2005
• 期刊: Lesson in Nanotechnology from Traditional and Advanced Ceramics, Proc.of the FORUM 2004 of the World Academy of Ceramics, Edited J-F Baumard
• 作者: A.Ahniyaz;T.Watanabe;M.Yoshimura;Masahiro Yoshimura
• 通讯作者: Masahiro Yoshimura

Direct fabrication of TiO2/activated carbon hybrid materials by hydrothermal with ball milling method at low temperature

低温水热球磨法直接制备TiO2/活性炭杂化材料

• 发表时间: 2005
• 期刊: J.Mat.Science (accepted)
• 作者: Naonori Sakamoto;Takahiro Fujino;Tomoaki Watanabe;Masahiro
• 通讯作者: Masahiro

Soft Solution Processings : Concept and Realization of Direct Fabrication of Shaped eramics (Nano-crystals,Whiskers,Films,and/or Patterns) in Solutions without Post-Firing

软溶液加工：在溶液中直接制造成形陶瓷（纳米晶体、晶须、薄膜和/或图案）而无需后烧的概念和实现

• 发表时间: 2006
• 期刊: J.Mater.Sci. 41
• 作者: T.Watanabe;H.Wang;Y.Yamakawa;M.Yoshimura;Masahiro Yoshimura
• 通讯作者: Masahiro Yoshimura