2000 Fiscal Year Annual Research Report

溶液プロセスによる高機能複合酸化物の設計

Research Project

Project/Area Number	10045038
Research Institution	Tokyo Institute of Technology
Principal Investigator	吉村昌弘東京工業大学, 応用セラミックス研究所, 教授 (10016826)
Co-Investigator(Kenkyū-buntansha)	堂免一成東京工業大学, 資源化学研究所, 教授 (10155624) 伊藤満東京工業大学, 応用セラミックス研究所, 教授 (30151541) 垣花眞人東京工業大学, 応用セラミックス研究所, 助教授 (50233664)
Keywords	溶液プロセス / 水熱反応 / 水熱電気化学 / 積層膜 / チタン錯体 / BaTiO_3 / SrTiO_3 / 層状複合酸化物 / 光触媒
Research Abstract	エレクトロニクス、イオニクス、超伝導、センサーあるいは触媒などの新しい高機能材料を開発するためには、組成、結晶構造、電子構造、さらには微構造や分散などを設計、最適化した複合酸化物を提案する必要がある。またそれらの特性はその作製プロセスにも大きく影響するので、プロセスの設計および制御も重要である。本研究では設計した高機能複合酸化物を電子的、電磁気的、分光的および物理化学的に評価すると共に、それらを効率よく作製する溶液プロセスの確率を目的とする。溶液プロセスは低温かつ低エネルギー消費であるので環境負荷が小さいという長所を持つほか、通常の高温プロセスや真空プロセスでは逆に生成しにくい低温層や準安定相が得られる特色もある。本年度の主な成果は以下の通りである。 1.LiOH中において金属基板を処理する溶液プロセスによりLiCoO_2の薄膜を100℃付近の低温でつくることができる。 2.本プロセスより電極として活性な高温相LiCoO_2を100〜150℃で作製できる。 3.溶液をフローさせながら水熱反応、あるいは水熱電気化学反応を起こさせる反応装置を開発し、これを用いてBaTiO_3/SrTiO_3の積層膜が作製できる。 4.水溶性のチタン錯体、タンタル錯体、ニオブ錯体を開発し、それらを用いて均一組成の各種複合酸化物の微粉体の合成に成功している。 5.錯体重合法により層状複合酸化物が合成され、これが高感度光触媒の性能を示すことを実証した。 6.インターカレーションにより層状複合酸化物にLiなどのイオン、塩、分子からバイオ高分子までを挿入することができ、それにより各種のナノハイブリッドが作製できることがわかった。 7.複合酸化物の新しい量子強誘電体や高イオン導電体が作製できた。

Research Products
(31 results)

All Other

All Publications (31 results)

[Publications] Kiyoshi OKADA: "In situ Zeolite Na-X Coating on Glass Fibers by Soft Solution Process"Microporous and Mesoporous Mesoporous Materials. 37. 99-105 (2000)
[Publications] C.P.UDAWATTE: "Low Temperature Synthesis of Pure SrSnO_3 and the (Ba_xSr_<1-x>)SnO_3 Solid Solution by the Polymerized Complex Method"Solid State Ionics. 128. 217-226 (2000)
[Publications] S.W.SONG: "Direct Fabrication of LiCoO_2 Film Electrodes Using Soft Solution-Processing in LiOH Solution at 20-200℃"Mat.Res.Soc.Symp.Proc.. 606. 205-210 (2000)
[Publications] Hiroyuki TOYA: "In situ Observation of Hydroxyapatite at High Temperatures by Ultraviolet Laser Raman Spectroscopy"Trans.Mater.Res.Soc.,Japan. 25. 1179-1181 (2000)
[Publications] Zhibin WU: "Direct Synthesis of Potassium Tantalate Thin Films by Hydrothermal-electrochemical Method"J.Mater.Soc.. 35. 2833-2839 (2000)
[Publications] Kyoo-Seung HAN: "Single Step Fabrication of Li_<1-x>Ni_<1-x>O_2 and LiCoO_2 films by Soft Solution-Processing at 20-200℃"Proc.of SSI-12,Solid State Ionics. 135-137. 273-276 (2000)
[Publications] Seung-Wan SONG: "Effect of liOH Concentration Change on Simultaneous Preparation of LiCoO_2 Film and Powder by Hydrothermal Method"Proc.of SSI-12,Solid State Ionics. 135-137. 277-282 (2000)
[Publications] Jose M.CALDERON MORENO: "Carbon Nanocells and Nanotubes Grown in Hydrothermal Fluids"Chem.Phys.Lett.. 329. 317-322 (2000)
[Publications] Yury GOGOTSI: "Hydrothermal Synthesis of Multiwall Carbon Nanotubes"J.Mater.Res.. 15[12]. 2591-2594 (2000)
[Publications] Shu-Hong YU: "Fabrication of Polystyrene/CdS Hybrid Nanocomposites Embedded with CdS Nanowires by a Soft Solution-Processing Route"Mater.Res.Soc.Symp.Proc.. 628. (2000)
[Publications] Shu-Hong YU: "Direct Fabrication of Ferrite MFe_2O_4(M=Zn,Mg)/Fe Composite Thin Films by Soft Solution Processing"Chem.of Mater.. 12[12]. 3805-3810 (2000)
[Publications] Koji IOKU: "Observation of OH Ion in Hydroxyapatite by UV Laser Raman Scattering"Phosphorus Research Bulletin. 11. 13-18 (2000)
[Publications] T.FUJIWARA: "Direct Fabrication of LiCoO_2 Films on Papers by Electrodepositions Method with Interfacial Reaction"TMS,The Minerals,Metals & Materials Society. 935-938 (2000)
[Publications] Shu-Hong YU: "In situ Fabrication and Optical Properties of a Novel Polystyrene/Semiconductor Nanocomposite Embedded with Quantum-confined CdS Nanowires by a Soft Solution Processing Route Called Solvothermal-co-Polymerization Process"Langmuir. 17[1]. (2001)
[Publications] Jose M.CALDERON MORENO: "The Effect of Melt Quenching on Subsolidus Equilibria in the Ternary System Al_2O_3-Y_3Al_5O_<12>-Zr_2"Solid Stte Ionics. (2001)
[Publications] H.TAKAHASHI: "The Synthesis of (H_2O)TiNbO_5・0.16H_2O via Hydronium Ion (H_2O) Exchange Reaction and its Photocatalytic Activity for H2 Evolution from Aqueous Methanol Solution"Phys.Chem.Chem.Phys.. 2. 4461-4464 (2000)
[Publications] Masahiro YOSHIMURA: "Soft Solution-Proceessing-A Strategy for One-Step Processing of Advanced Inorganic Materials"MRS Bulletin Special Issue. 25[9]. 17-25 (2000)
[Publications] Michiyo KAMIYA: "Solid Solution Formation and Crystal Growth of CeO_2 Doped with Nd Hydrothermal Condtion"Electrochem.Soc.Proc.. 99-38. 557-567 (2000)
[Publications] K.BYRAPPA: "Hydrothermal Preparation of TiO_2 and Photocatalytic Degradation of Hexachlorocyclohexane and Dichlorodiphenyltrichloromethane"Environmental Technology. 21. 1085-1090 (2000)
[Publications] Masahiro YOSHIMUEA: "Soft Processing for Advanced Inorganic Materials"MRS Bulletin Special Issue. 25[9]. 12-13 (2000)
[Publications] Zhibin WU: "The Formation of Pysochlore Potassium Tantalate Thin Films by Soft Solution Processing"Thin Solid Films. 375. 46-50 (2000)
[Publications] Yury GOGOTSI: "Graphite Polyhedral Crystals"Science. 290. 317-319 (2000)
[Publications] Zhibin WU: "Hydrothermal Formation and Growth of Single-and Double-Layer BaTiO_3 and SrTiO_3 Films on the Flwxible Polymer Film Substrates from Sol-Gel Amorphous Titanium Oxide Films"Chem.of Mater.. 12[11]. 3356-3361 (2000)
[Publications] Seung-Wan SONG: "Effect of 20-200℃ Fabrication Temperature on Microstructure of Hydrothermally Prepared LiCoOw Films"J.Am.Ceram.Soc.. 83[11]. 2839-2844 (2000)
[Publications] M.KAKIHANA: "The Synthesis of Photocatalysts Using the Polymerizable-Complex Method"MRS Bulletin. 25. 27-32 (2000)
[Publications] E.R.CAMARGO: "Peroxide Based Route Free from Halides for the Synthesis of Lead Titanate Powder"Chem.Mater.. (2000)
[Publications] R.M.V.RAO: "Epitaxial La_<1/2>Na_<1/2>TiO_3 Films as Capacitor for Temperature and Electric Field Insensitive Applications"J.Appl.Phys.. 88[6]. 3756-3758 (2000)
[Publications] Ruiping WANG: "Effect of Hydrostatic Pressure on the Dielectric Property of SrTi_<18>O_3 and SrTiO_3 Single Crystals"Physical Review B. 62[6]. R3577-3580 (2000)
[Publications] Ruiping WANG: "Domain State Properties of SrTi(16O_<1-x>18O_x)_3"Physical Review B. 62. 731-734 (2000)
[Publications] Ruuiping WANG: "Predominant Factors for Quantum Paraelectric-quantum Ferroelectric Transition in SrTiO_3 Based Oxides"Physica B. 284-288. 1141-1142 (2000)
[Publications] Yoshiyuki INAGUMA: "Lithium Ion Conductivity in A-site Deficient Perovskites Sr0.5La0.05Li0.35 0.1Ti0.5Ta0.5O3 and Sr0.35La0.15Li0.35Ti0.5Ta0.5O3"Electrochemistry. 68. 221-223 (2000)

2000 Fiscal Year Annual Research Report

溶液プロセスによる高機能複合酸化物の設計

Principal Investigator

吉村 昌弘 東京工業大学, 応用セラミックス研究所, 教授 (10016826)

Research Products

[Publications] Kiyoshi OKADA: "In situ Zeolite Na-X Coating on Glass Fibers by Soft Solution Process"Microporous and Mesoporous Mesoporous Materials. 37. 99-105 (2000)

[Publications] C.P.UDAWATTE: "Low Temperature Synthesis of Pure SrSnO_3 and the (Ba_xSr_<1-x>)SnO_3 Solid Solution by the Polymerized Complex Method"Solid State Ionics. 128. 217-226 (2000)

[Publications] S.W.SONG: "Direct Fabrication of LiCoO_2 Film Electrodes Using Soft Solution-Processing in LiOH Solution at 20-200℃"Mat.Res.Soc.Symp.Proc.. 606. 205-210 (2000)

[Publications] Hiroyuki TOYA: "In situ Observation of Hydroxyapatite at High Temperatures by Ultraviolet Laser Raman Spectroscopy"Trans.Mater.Res.Soc.,Japan. 25. 1179-1181 (2000)

[Publications] Zhibin WU: "Direct Synthesis of Potassium Tantalate Thin Films by Hydrothermal-electrochemical Method"J.Mater.Soc.. 35. 2833-2839 (2000)

[Publications] Kyoo-Seung HAN: "Single Step Fabrication of Li_<1-x>Ni_<1-x>O_2 and LiCoO_2 films by Soft Solution-Processing at 20-200℃"Proc.of SSI-12,Solid State Ionics. 135-137. 273-276 (2000)

[Publications] Seung-Wan SONG: "Effect of liOH Concentration Change on Simultaneous Preparation of LiCoO_2 Film and Powder by Hydrothermal Method"Proc.of SSI-12,Solid State Ionics. 135-137. 277-282 (2000)

[Publications] Jose M.CALDERON MORENO: "Carbon Nanocells and Nanotubes Grown in Hydrothermal Fluids"Chem.Phys.Lett.. 329. 317-322 (2000)

[Publications] Yury GOGOTSI: "Hydrothermal Synthesis of Multiwall Carbon Nanotubes"J.Mater.Res.. 15[12]. 2591-2594 (2000)

[Publications] Shu-Hong YU: "Fabrication of Polystyrene/CdS Hybrid Nanocomposites Embedded with CdS Nanowires by a Soft Solution-Processing Route"Mater.Res.Soc.Symp.Proc.. 628. (2000)

[Publications] Shu-Hong YU: "Direct Fabrication of Ferrite MFe_2O_4(M=Zn,Mg)/Fe Composite Thin Films by Soft Solution Processing"Chem.of Mater.. 12[12]. 3805-3810 (2000)

[Publications] Koji IOKU: "Observation of OH Ion in Hydroxyapatite by UV Laser Raman Scattering"Phosphorus Research Bulletin. 11. 13-18 (2000)

[Publications] T.FUJIWARA: "Direct Fabrication of LiCoO_2 Films on Papers by Electrodepositions Method with Interfacial Reaction"TMS,The Minerals,Metals & Materials Society. 935-938 (2000)

[Publications] Shu-Hong YU: "In situ Fabrication and Optical Properties of a Novel Polystyrene/Semiconductor Nanocomposite Embedded with Quantum-confined CdS Nanowires by a Soft Solution Processing Route Called Solvothermal-co-Polymerization Process"Langmuir. 17[1]. (2001)

[Publications] Jose M.CALDERON MORENO: "The Effect of Melt Quenching on Subsolidus Equilibria in the Ternary System Al_2O_3-Y_3Al_5O_<12>-Zr_2"Solid Stte Ionics. (2001)

[Publications] H.TAKAHASHI: "The Synthesis of (H_2O)TiNbO_5・0.16H_2O via Hydronium Ion (H_2O) Exchange Reaction and its Photocatalytic Activity for H2 Evolution from Aqueous Methanol Solution"Phys.Chem.Chem.Phys.. 2. 4461-4464 (2000)

[Publications] Masahiro YOSHIMURA: "Soft Solution-Proceessing-A Strategy for One-Step Processing of Advanced Inorganic Materials"MRS Bulletin Special Issue. 25[9]. 17-25 (2000)

[Publications] Michiyo KAMIYA: "Solid Solution Formation and Crystal Growth of CeO_2 Doped with Nd Hydrothermal Condtion"Electrochem.Soc.Proc.. 99-38. 557-567 (2000)

[Publications] K.BYRAPPA: "Hydrothermal Preparation of TiO_2 and Photocatalytic Degradation of Hexachlorocyclohexane and Dichlorodiphenyltrichloromethane"Environmental Technology. 21. 1085-1090 (2000)

[Publications] Masahiro YOSHIMUEA: "Soft Processing for Advanced Inorganic Materials"MRS Bulletin Special Issue. 25[9]. 12-13 (2000)

[Publications] Zhibin WU: "The Formation of Pysochlore Potassium Tantalate Thin Films by Soft Solution Processing"Thin Solid Films. 375. 46-50 (2000)

[Publications] Yury GOGOTSI: "Graphite Polyhedral Crystals"Science. 290. 317-319 (2000)

[Publications] Zhibin WU: "Hydrothermal Formation and Growth of Single-and Double-Layer BaTiO_3 and SrTiO_3 Films on the Flwxible Polymer Film Substrates from Sol-Gel Amorphous Titanium Oxide Films"Chem.of Mater.. 12[11]. 3356-3361 (2000)

[Publications] Seung-Wan SONG: "Effect of 20-200℃ Fabrication Temperature on Microstructure of Hydrothermally Prepared LiCoOw Films"J.Am.Ceram.Soc.. 83[11]. 2839-2844 (2000)

[Publications] M.KAKIHANA: "The Synthesis of Photocatalysts Using the Polymerizable-Complex Method"MRS Bulletin. 25. 27-32 (2000)

[Publications] E.R.CAMARGO: "Peroxide Based Route Free from Halides for the Synthesis of Lead Titanate Powder"Chem.Mater.. (2000)

[Publications] R.M.V.RAO: "Epitaxial La_<1/2>Na_<1/2>TiO_3 Films as Capacitor for Temperature and Electric Field Insensitive Applications"J.Appl.Phys.. 88[6]. 3756-3758 (2000)

[Publications] Ruiping WANG: "Effect of Hydrostatic Pressure on the Dielectric Property of SrTi_<18>O_3 and SrTiO_3 Single Crystals"Physical Review B. 62[6]. R3577-3580 (2000)

[Publications] Ruiping WANG: "Domain State Properties of SrTi(16O_<1-x>18O_x)_3"Physical Review B. 62. 731-734 (2000)

[Publications] Ruuiping WANG: "Predominant Factors for Quantum Paraelectric-quantum Ferroelectric Transition in SrTiO_3 Based Oxides"Physica B. 284-288. 1141-1142 (2000)

[Publications] Yoshiyuki INAGUMA: "Lithium Ion Conductivity in A-site Deficient Perovskites Sr0.5La0.05Li0.35 0.1Ti0.5Ta0.5O3 and Sr0.35La0.15Li0.35Ti0.5Ta0.5O3"Electrochemistry. 68. 221-223 (2000)

吉村昌弘東京工業大学, 応用セラミックス研究所, 教授 (10016826)