Distribution and Coordination State of Titanium Oxides in Microstructures Formed by Spinodal Decomposition in Multicomponent Borosilicate Glass
スポンサーリンク
概要
- 論文の詳細を見る
Tetrahedrally coordinated titanium oxides implanted into inorganic materials aid in the removal of air-based pollutants by photocatalytic reactions. We investigated the distribution and the coordination state of titanium oxides in a phase-separated glass formed by the spinodal decomposition to obtain porous glass containing tetrahedrally coordinated titanium oxides. Various glass compositions containing titanium oxides were prepared by partially replacing SiO2 with B2O3 and small amounts of TiO2 in multicomponent silicate glass compositions where a spinodal decomposition had been confirmed. Interconnected microstructures that consist of two different phases were observed in heat-treated glass samples using transmission electron microscopy and these microstructures underwent spinodal decomposition. Compositional analyses of these microstructures using energy dispersion spectroscopy revealed that the decomposed phase with higher concentration of SiO2 contains smaller amount of titanium oxides than the other phase. Thermodynamic analysis was conducted to evaluate the distribution of titanium oxides in the glass phases, formed by a phase separation in the multicomponent borosilicate glass, where glass was regarded as a super-cooled liquid phase. In the thermodynamic analysis, the calculated activity of TiO2 in the two decomposed glass phases indicated that the glass phase with higher concentration of SiO2 contains lower concentration of titanium oxides. Porous glasses containing titanium oxide were fabricated from the spinodal-decomposed borosilicate glass by leaching one of the separated phases with an acid solution. Ti K-edge X-ray absorption near edge structure spectra indicated that the porous glass contains tetrahedrally coordinated titanium oxides.
- 社団法人 日本鉄鋼協会の論文
- 2010-04-15
著者
-
Tanaka Toshihiro
Division Of Materials And Manufacturing Science Osaka University
-
Suzuki Masanori
Research Fellow Of The Japan Society For The Promotion Of Science Division Of Materials And Manufact
-
Tanaka Toshihiro
Division Of Materials And Manufacturing Science Graduate School Of Engineering Osaka University
-
Tanaka Toshihiro
Division Of Cardiology Sakakibara Heart Institute
関連論文
- ACR4, a Putative Receptor Kinase Gene of Arabidopsis thaliana, that is Expressed in the Outer Cell Layers of Embryos and Plants, is Involved in Proper Embryogenesis
- INTRACORONARY ULTRASOUND ASSESSMENT OF CORONARY STENTS
- EARLY EXPERIENCE WITH THE STRECKER CORONARY STENT
- Prediction of Phase Separation in Silicate Glass for the Creation of Value-added Materials from Waste Slag
- Evaluation of Viscosity of Mold Flux by Using Neural Network Computation
- Effect of Surface Orientation of Alumina Single Crystals on the Interfacial Tension between Molten Iron and Solid Alumina under Different Oxygen Partial Pressures
- Equilibrium Phase Relationship between SiC and a Liquid Phase in the Fe-Si-C System at 1523-1723K
- Akaike's information criterion for a measure of linkage disequilibrium
- Simple removal of dioxins by injecting combustion gas into water
- REPERFUSION PHENOMENON DURING CORONARY THROMBOLYTIC THERAPY(CT) : Coronary Thrombolysis : 53 Annual Scientific Meeting, Japanese Circulation Society
- Unusual Wetting of Liquid Metals on Iron Substrate with Oxidized Surface in Reduced Atmosphere
- Unusual Wetting of Liquid Bismuth on a Surface-Porous Copper Substrate Fabricated by Oxidation-Reduction Process
- Application of Hydrothermal Treatment on BF Slag and Waste Glass for Preparing Lubricant Materials in High Strain Rolling for Ultrafine-grained Steel Production
- Fabrication of Low Temperature Foaming Glass Materials Using Hydrothermal Treatment
- The Effect of Si and Mn Content on Dynamic Wetting of Steel with Liquid Zn
- Trial to Evaluate Wettability of Liquid Zn with Steel Sheets Containing Si and Mn
- Effect of Microwave Irradiation on Hydrothermal Treatment of Blast Furnace Slag
- Preparation of Porous Ceramics by the Hydrothermal Reaction of Blast Furnace Slag for Use in a Water-retentive Material
- MgO Effect on Hydrothermal Solidification of Blast Furnace Slag
- Rate Enhancement of the Degassing Reaction by the Enlargement of RH and DH Reactors
- Evaluation of Viscosity of Molten SiO_2-CaO-MgO-Al_2O_3 Slags in Blast Furnace Operation
- Reduction Behavior of FeO Compact Including Molten Slag
- Evaluation of Surface Tension of Molten Slag in Multi-component Systems
- Use of Slag Containing Water as a Lubricant in High Straining Rolling for Ultrafine-grained Steels
- Estimation of Surface Tension of Molten Silicates Using Neural Network Computation
- Evaluation of the Surface Tension of Ternary Silicate Melts Containing Al_2O_3, CaO, FeO, MgO or MnO
- Surface Tension of Liquid Fe-Ti Alloys at 1 823K
- A Model for Estimation of Viscosity of Molten Silicate Slag
- Improvements in Surface Tension Measurements of Liquid Metals Having Low Capillary Constants by the Constrained Drop Method
- Trial on the Application of Capillary Phenomenon of Solid CaO to Desulfurization of Liquid Fe
- Effect of Structure on the Viscosity of Silicate Melts
- Evaluation of Surface Tension of Molten Ionic Mixtures
- Distribution and Coordination State of Titanium Oxides in Microstructures Formed by Spinodal Decomposition in Multicomponent Borosilicate Glass
- A Model for Estimating the Viscosity of Molten Aluminosilicate Containing Calcium Fluoride
- A Model for Estimating Viscosities of Aluminosilicate Melts Containing Alkali Oxides
- Surface Tension Evaluation of Molten Silicates Containing Surface-active Components (B_2O_3, CaF_3 or Na_2O)
- Materials Design for the Fabrication of Porous Glass using Phase Separation in Multi-component Borosilicate Glass
- Composition Dependence of Microstructures formed by Phase Separation in Multi-component Silicate Glass
- Sulphide Capacity Prediction of Molten Slags by Using a Neural Network Approach
- CLINICAL AND ELECTROPHYSIOLOGIC CHARACTERISTICS OF LIFE-THRETENING VENTRICULAR TACHYARRHYTHMIAS OCCURRING DURING TREADMILL EXERCISE TESTING : Exercise Test, Rehabilitation : 53 Annual Scientific Meeting, Japanese Circulation Society
- Effects of Porous Surface Layer on Lubrication Evaluated by Ring Compression Friction Test
- Light Absorption by Metals with Porous Surface Layer Formed by Oxidization-Reduction Treatment
- Distribution and Coordination State of Titanium Oxides in Microstructures Formed by Spinodal Decomposition in Multicomponent Borosilicate Glass