Hydrogen supply material and production method therefor, and hydrogen supply method

Abstract

A layered solid formulation as one hydrogen supply material according to the present invention includes silicon fine particles having a capability of generating hydrogen and aggregates of the silicon fine particles, and a physiologically acceptable medium that gets contact with the silicon fine particles or the aggregates thereof. The hydrogen supply material is a hydrogen supply material for bringing the hydrogen into contact with the skin and/or the mucous membrane through the medium.

1 . A hydrogen supply material comprising:
 silicon fine particles or aggregates thereof capable of generating hydrogen; and   a physiologically acceptable medium that gets contact with the silicon fine particles or the aggregates, wherein   the physiologically acceptable medium has a pH value of 6 or more, and   the silicon fine particles or the aggregates of the silicon fine particles have a heterogeneous or incomplete oxide film on surfaces of the silicon fine particles or the aggregates of the silicon fine particles, and the surfaces of the silicon fine particles or the aggregates retain hydrophilicity.   
     
     
         2 . The hydrogen supply material according to  claim 1 , further comprising a film impermeable to water, wherein the film covers a solid formulation of the silicon fine particles or the aggregates thereof, or covers a layer including the silicon fine particles or the aggregates thereof, wherein
 the physiologically acceptable medium is brought into contact with the silicon fine particles when at least a part of the impermeable film is removed or dissolved.   
     
     
         3 . The hydrogen supply material according to  claim 2 , further comprising a laminate structure including a layered solid formulation comprising the silicon fine particles or aggregates thereof and the physiologically acceptable medium in contact with the layered solid formulation, with the film interposed between the physiologically acceptable medium and the layered solid formulation. 
     
     
         4 . A washing agent, a cosmetic material, a therapeutic material, or a hygienic material comprising the hydrogen supply material according to  claim 1 . 
     
     
         5 . The hydrogen supply material according to  claim 1 , wherein the silicon fine particles are substantially free of surface alkyl groups. 
     
     
         6 . A production method for a hydrogen supply material comprising:
 bringing silicon fine particles or aggregates thereof capable of generating hydrogen into contact with a physiologically acceptable medium to bring the hydrogen into contact with a skin and/or a mucous membrane through the physiologically acceptable medium.   
     
     
         7 . The production method for a hydrogen supply material according to  claim 6 , further comprising:
 bringing the silicon fine particles or the aggregates thereof into contact with hydrogen peroxide water.   
     
     
         8 . The production method for a hydrogen material according to  claim 7 , further comprising stirring the silicon fine particles or the aggregates thereof with hydrogen peroxide water. 
     
     
         9 . The production method for a hydrogen supply material according to  claim 6 , wherein the silicon fine particles or the aggregates thereof is brought into contact with the physiologically acceptable medium when at least a part of an impermeable film that covers a solid formulation of the silicon fine particles or the aggregates thereof or that covers a layer including the silicon fine particles or the aggregates thereof is removed or dissolved. 
     
     
         10 . The production method for a hydrogen supply material according to  claim 6 , wherein the physiologically acceptable medium has a temperature of higher than 0° C. and 50° C. or lower. 
     
     
         11 . The production method for a hydrogen supply material according to  claim 6 , wherein the physiologically acceptable medium has a pH of 6 or more. 
     
     
         12 . The production method for a hydrogen supply material according to  claim 6 , wherein the physiologically acceptable medium comprises at least one selected from a group consisting of a liquid form, a gel form, a cream form, a paste form, an emulsion form, and a mousse form. 
     
     
         13 . The production method for a hydrogen supply material according to  claim 6 , wherein the hydrogen supply material is contained in a washing agent, a cosmetic material, a therapeutic material, or a hygienic material. 
     
     
         14 . The production method for a hydrogen supply material according to  claim 6 , further comprising adjusting a pH value of the physiologically acceptable medium. 
     
     
         15 . A hydrogen supply method comprising a contact step including:
 bringing silicon fine particles or aggregates thereof capable of generating hydrogen into contact with a physiologically acceptable medium to bring the hydrogen into contact with a skin and/or a mucous membrane through the physiologically acceptable medium; and   adjusting a pH value of the physiologically acceptable medium to be 6 or more.   
     
     
         16 . The hydrogen supply method according to  claim 15 , wherein
 the silicon fine particles or the aggregates is brought into contact with the physiologically acceptable medium when at least a part of an impermeable film that covers a solid formulation of the silicon fine particles or the aggregates thereof or that covers a layer including the silicon fine particles or the aggregates thereof is removed or dissolved.   
     
     
         17 . The hydrogen supply method according to  claim 15 , further comprising:
 treating surfaces of the silicon fine particles or the aggregates of the silicon fine particles with hydrogen peroxide to form a heterogeneous or incomplete oxide film.