2002 Fiscal Year Final Research Report Summary
Design and application development of water-soluble titanium, niobium, tantalum and bismuth complexes having environmentally benign functionality
| Project/Area Number |
12555177
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 展開研究 |
|---|
| Research Field |
Inorganic materials/Physical properties
|
|---|
| Research Institution | Tokyo Institute of Technology |
|---|
Principal Investigator |
KAKIHANA Masato Tokyo Institute of Technology, Materials and Structures Laboratory, Associate Professor, 応用セラミックス研究所, 助教授 (50233664)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
PETRYKIN Valery Tokyo Institute of Technology, Materials and Structures Laboratory, JSPS post-doc, 応用セラミックス研究所, 外国人特別研究員
KATO Shingo Furuuchi Chemical Corporation, Researcher, 研究開発部門, 研究員
SASAKI Satoshi Tokyo Institute of Technology, Materials and Structures Laboratory, Associate Professor Furuuchi Chemical Corporation, Professor, 応用セラミックス研究所, 教授 (10162364)
|
|---|
| Project Period (FY) |
2000 – 2002
|
| Keywords | water / titanium complex / citric acid / environmentally low-load / water-soluble complex / environmentally benign functionality |
|---|
| Research Abstract |
The purpose of this study is to solve the problem in metal sources for titanium, niobium, tantalum and bismuth metal oxides that are widely used industrially as starting compounds for electric or catalytic materials, to design and synthesize new non-toxic water-soluble titanium, niobium, tantalum and bismuth compounds, and to develop by use of these compounds environmentally benign preparation of multi-component oxides.
(1) Development of titanium peroxo citrato ammonium
The water-soluble titanium peroxo citrato ammonium was synthesized by treating metalic titanium with hydrogen peroxide followed by addition of citric acid. The isolated single crystal was submitted to XRD analysis to determine its precise crystal structure.
(2) Synthesis of TiO_2 and BaTi_4O_9 using water-soluble titanium peroxo citrato ammonium
Thin films of TiO_2 and powders of BaTi_4O_9 were synthesized by use of water-soluble titanium peroxo citrato ammonium as a starting titanium source and water as a process solvent, and photocatalytic properties of the obtained materials were tested.
(3) Development of water-soluble titanium lactate and synthesis of thin films and ultra-fine powders of SrTiO_3
A single crystal of the water-soluble titanium lactate was grown from a solution obtained by treating metalic titanium with hydrogen peroxide followed by addition of lactic acid. The precise crystal structure was determined by use of XRD technique. Using this compound, ultra-fine powders and thin films with thickness of 300nm of SrTiO_3 were prepared at 500℃.
(4) Development of water-soluble niobium and tantalum compounds
Stable and water-soluble (NH_4)_3[Nb(O_2)_4]and(NH_4)_3[Ta(O_2)_4] compounds were developed by treating niobium oxide or tantalic acid with hydrogen peroxide solution containing ammonia, and multi-component oxides were synthesized from aqueous solutions by use of these compounds.
|
