Abstract: Provided is a dye-sensitized solar cell having high conversion efficiency. The dye-sensitized solar cell is a dye-sensitized solar cell in which a photoelectrode and a counter electrode are disposed opposite to each other via an electrolyte layer; (1) the photoelectrode comprising a titanium material, a blocking layer formed on the titanium material, and a porous titanium oxide layer containing a dye sensitizing agent formed on the blocking layer; and (2) the counter electrode comprising a transparent conductive glass or transparent conductive film coated with an electrochemical-reduction catalyst layer.

Abstract: A material that is useful as a wear-resistant member, a highly functional photocatalytic material, a photoelectric conversion element material, etc., is produced without the need for complicated processes or complicated handling, which are problems of the prior art. Provided is a method for producing a surface-treated metallic titanium material or titanium alloy material, the method comprising the steps of (1) forming titanium nitride on the surface of a metallic titanium material, and (2) heating the metallic titanium material with titanium nitride formed on the surface thereof obtained in step (1) in an oxidizing atmosphere.

Abstract: Provided is a dye-sensitized solar cell with a large area that can exhibit high electrical power. The dye-sensitized solar cell is a dye-sensitized solar cell in which a photoelectrode and a counter electrode are disposed opposite to each other via an electrolyte layer; (1) the photoelectrode comprising a titanium material and a titanium oxide layer containing a dye sensitizing agent formed on the titanium material; and (2) the counter electrode comprising a transparent conductive glass or transparent conductive film coated with an electrochemical-reduction catalyst layer, the counter electrode being provided with a collector electrode.

Abstract: The present invention provides a novel method for treating soil-contaminated water, the method using a photocatalytic material capable of efficiently removing, by light irradiation alone, volatile organic compounds and heavy metals that give rise to soil contamination. The present invention provides a method for treating soil-contaminated water that detoxifies volatile organic compounds contained in soil-contaminated water using a photocatalytic material, the method being characterized by including the steps of (1) subjecting the soil-contaminated water to a gas-liquid separation to obtain a gas phase, and (2) decomposing the volatile organic compounds contained in the gas phase obtained in step (1) using the photocatalytic material.

Abstract: The present invention provides a novel method for treating soil-contaminated water, the method using a photocatalytic material capable of efficiently removing, by light irradiation alone, volatile organic compounds and heavy metals that give rise to soil contamination. The present invention provides a method for treating soil-contaminated water that detoxifies volatile organic compounds contained in soil-contaminated, water using a photocatalytic material, the method being characterized by including the steps of (1) subjecting the soil-contaminated water to a gas-liquid separation to obtain a gas phase, and (2) decomposing the volatile organic compounds contained in the gas phase obtained in step (1) using the photocatalytic material.

Abstract: The invention concerns a method for producing a crystalline titanium oxide film useful as a photocatalyst, a photovoltaic element, etc. The crystalline titanium oxide film is produced by steps (a-1) and (b): (a-1) a step of heating titanium or titanium alloy under conditions (1) or (2) to form titanium nitride on the surface of the titanium or titanium alloy; (1) in an atmosphere of nitrogen and/or ammonia gas in the presence of a carbon material acting as an oxygen trapping agent; or (2) in an atmosphere where a pressure is reduced to discharge atmospheric gas, and then nitrogen and/or ammonia gas are/is introduced in the presence of a carbon material acting as an oxygen trapping agent; and (b) a step of immersing the titanium or titanium alloy obtained in step (a-1) above in an electrolyte containing an inorganic acid and/or organic acid, and applying voltage for anodization.

Abstract: This invention provides a dye-sensitized solar cell ensuring high photoelectric conversion efficiency. The dye-sensitized solar cell comprises a photoelectrode and a counter electrode, which are oppositely disposed with an electrolyte layer interposed therebetween, wherein: (1) the photoelectrode is structured such that a semiconductor layer containing a dye sensitizer is formed on a titanium or titanium alloy substrate having an opening structure, (2) the photoelectrode comprises a light condenser that is disposed on the titanium or titanium alloy substrate.

Abstract: The present invention provides a new method for decomposing and/or removing hazardous substances using a photocatalytic material. The method of the present invention is sufficiently useful in fields requiring quick decomposition and/or removal of hazardous substances in gas and/or liquid phases. The decomposition method of the present invention using a photocatalytic material enables significantly efficient and rapid decomposition of hazardous substances in gas and/or liquid phases by causing a photocatalytic material to coexist with a dilute hydrogen peroxide solution.

Abstract: The present invention provides a new method for decomposing and/or removing hazardous substances using a photocatalytic material. The method of the present invention is sufficiently useful in fields requiring quick decomposition and/or removal of hazardous substances in gas and/or liquid phases. The decomposition method of the present invention using a photocatalytic material enables significantly efficient and rapid decomposition of hazardous substances in gas and/or liquid phases by causing a photocatalytic material to coexist with a dilute hydrogen peroxide solution.

Abstract: The lining structure of the present invention comprises lining plates each having supporting portions formed at two opposite sides of a square lining plate body via bent step portions, and covering portions formed at the remaining sides of the lining plate body; the lining plates being arranged in longitudinal and transverse directions on a surface to be lined; in the first and second lining plates that are adjacent to each other in longitudinal and transverse directions, a covering portion of one of the lining plates being superposed on a supporting portion of, and being butted against the lining plate body of, another of the lining plates, with the butted portion being joined by welding, with an adhesive, or a combination thereof.

Abstract: The lining structure of the present invention comprises lining plates each having supporting portions formed at two opposite sides of a square lining plate body via bent step portions, and covering portions formed at the remaining sides of the lining plate body; the lining plates being arranged in longitudinal and transverse directions on a surface to be lined; in the first and second lining plates that are adjacent to each other in longitudinal and transverse directions, a covering portion of one of the lining plates being superposed on a supporting portion of, and being butted against the lining plate body of, another of the lining plates, with the butted portion being joined by welding, with an adhesive, or a combination thereof.

Abstract: The invention provides a titanium composite material comprising a bonded laminate having a layer of macromolecular material bonded to the modified surface of a titanium sheet or a titanium alloy sheet, and a process for preparing a titanium composite material, the process comprising the step of bonding a macromolecular material to a titanium sheet or a titanium alloy sheet having a modified surface to be bonded.

Abstract: An easy-to-use and inexpensive work glove is provided. For this purpose, the work glove integrally comprises a first section for covering a region extending from a forearm middle portion between the wrist and an elbow to a hand, and a second section for covering an upper arm above the elbow, the second section extending from the first section. The first and second sections are each formed by applying a coating material such as natural rubber, synthetic rubber or synthetic resin onto a surface of a knitted fiber glove portion. The fiber glove portion of the second section is knitted from a thinner yarn to be smaller in thickness and has a higher stitch density than the fiber glove portion of the first section, and the second section has a thinner coating film formed on the surface of the fiber glove portion than that of the first section.

Abstract: An easy-to-use and inexpensive work glove is provided. For this purpose, the work glove integrally comprises a first section for covering a region extending from a forearm middle portion between the wrist and an elbow to a hand, and a second section for covering an upper arm above the elbow, the second section extending from the first section. The first and second sections are each formed by applying a coating material such as natural rubber, synthetic rubber or synthetic resin onto a surface of a knitted fiber glove portion. The fiber glove portion of the second section is knitted from a thinner yarn to be smaller in thickness and has a higher stitch density than the fiber glove portion of the first section, and the second section has a thinner coating film formed on the surface of the fiber glove portion than that of the first section.

Abstract: An antifouling member comprising a highly corrosion-resistant metal comprising titanium, zirconium, tantalum, niobium, or an alloy based on any of these metals and, deposited thereon, a coating layer of silver or a silver alloy so as to have a bonding strength as high as at least 0.2 MPa. The member can be prevented from marine organisms attaching thereto.

Abstract: An electrolytic composite electrode provided with a cathode formed from a drum to be rotated and an anode having a circular-arc inner surface facing the cathode at a certain interval and capable of keeping an electrolytic solution between the anode and the cathode.