Design and application development of water-soluble titanium, niobium, tantalum and bismuth complexes having environmentally benign functionality

具有环境友好功能的水溶性钛铌钽铋配合物的设计与应用开发

• 批准号: 12555177
• 负责人: KAKIHANA Masato
• 金额: $ 8.32万
• 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: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12555177/
• 关键词: water; titanium complex; citric acid; environmentally low-load; water-soluble complex; environmentally benign functionality

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 ammoniumThe 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 ammoniumThin 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_3A 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 compoundsStable 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.

本研究的目的是解决钛、铌、钽和铋金属氧化物的金属来源问题，设计和合成新的无毒的水溶性钛、铌、钽和铋化合物，并利用这些化合物开发环境友好的多组分氧化物的制备。(1)过氧柠檬酸铵钛的研制以金属钛为原料，经双氧水处理后，加入柠檬酸，合成了水溶性过氧柠檬酸铵钛。对分离的单晶进行XRD分析以确定其精确的晶体结构。(2)以水溶性过柠檬酸铵钛为钛源，水为工艺溶剂，制备了TiO_2薄膜和BaTi_4O_9粉体，并对所得材料的光催化性能进行了测试。(3)水溶性乳酸钛的研制及SrTiO_3薄膜和超细粉体的合成以金属钛为原料，经双氧水处理后加入乳酸，得到水溶性乳酸钛单晶。用XRD技术测定了其晶体结构。用该化合物在500℃下制备了SrTiO_3超细粉末和厚度为300nm的薄膜。(4)水溶性铌、钽化合物的研制用含氨过氧化氢溶液处理铌氧化物或钽酸，得到稳定的水溶性（NH_4）_3[Nb（O_2）_4]和（NH_4）_3[Ta（O_2）_4]化合物，并利用这些化合物从水溶液中合成了多元氧化物。

项目成果

M.Yoshino, M.Kakihana, et al.: "Polymerizable Complex Synthesis of Pure Sr_2Nb_xTa_<2-x>O_7 Solutions with High Photocatalytic Activities for Water Decomposition into H_2 and O_2"Chemistry of Materials. 14. 3369-3376 (2002)

M.Yoshino，M.Kakihana，等人：“具有高光催化活性的纯Sr_2Nb_xTa_<2-x>O_7溶液的聚合复合合成，用于水分解成H_2和O_2”材料化学。

M.Kakihana,M.Osada: "A novel aqueous solution route to the low-temperature synthesis of SrBi_2Nb_2O_9 by use of water-soluble Bi and Nb complex."Journal of Alloys and Compounds. 309. 113-117 (2000)

M.Kakihana，M.Osada：“利用水溶性 Bi 和 Nb 络合物低温合成 SrBi_2Nb_2O_9 的新型水溶液路线。”合金与化合物杂志。

E.R.Camargo, M.Kakihana, et al.: "Sodium Niobate (NaNbO_3) Powders Synthesized by a Wet-chemical Method Using a Water-soluble Malic Acid Complex"Chemistry of Materials. 14. 2365-2368 (2002)

E.R.Camargo、M.Kakihana 等人：“使用水溶性苹果酸复合物通过湿化学方法合成的铌酸钠 (NaNbO_3) 粉末”材料化学。

M.Kakihana, V.Petrykin, M.Osada: "Structure and Stability of Water Soluble (NH_4)_8[Ti_4(C_6H_4O_7)_4(O_2)_4]-8H_2O"Inorganic Chemistry. 40. 891-894 (2001)

M.Kakihana、V.Petrykin、M.Osada：“水溶性(NH_4)_8[Ti_4(C_6H_4O_7)_4(O_2)_4]-8H_2O的结构和稳定性”无机化学。

M.Osada,M.Kakihana: "アモルファス金属錯体法で合成した(La_<1-x>Ca_x)(Ba_<1.75-x>La_<0.25+x>)Cu_3O_<7+δ>の高調複素帯磁率"粉体及び粉末冶金. 47. 1111-1115 (2000)

M.Osada、M.Kakihana：“非晶金属络合法合成的(La_<1-x>Ca_x)(Ba_<1.75-x>La_<0.25+x>)Cu_3O_<7+δ>的谐波复磁化率”粉末和粉末冶金。47。1111-1115 (2000)