JPH06254139A - Germicidal adsorbing functional unit using photo semiconductor - Google Patents
Germicidal adsorbing functional unit using photo semiconductorInfo
- Publication number
- JPH06254139A JPH06254139A JP5041002A JP4100293A JPH06254139A JP H06254139 A JPH06254139 A JP H06254139A JP 5041002 A JP5041002 A JP 5041002A JP 4100293 A JP4100293 A JP 4100293A JP H06254139 A JPH06254139 A JP H06254139A
- Authority
- JP
- Japan
- Prior art keywords
- optical semiconductor
- base material
- adsorbing
- germicidal
- action
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004065 semiconductor Substances 0.000 title claims description 67
- 230000002070 germicidal effect Effects 0.000 title abstract 3
- 239000000463 material Substances 0.000 claims abstract description 61
- 239000000919 ceramic Substances 0.000 claims abstract description 25
- 238000005507 spraying Methods 0.000 claims abstract description 16
- 229910052586 apatite Inorganic materials 0.000 claims abstract description 14
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 8
- 239000011812 mixed powder Substances 0.000 claims abstract description 6
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 5
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000010457 zeolite Substances 0.000 claims abstract description 5
- 230000003287 optical effect Effects 0.000 claims description 59
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 230000001954 sterilising effect Effects 0.000 claims description 18
- 238000001179 sorption measurement Methods 0.000 claims description 15
- 238000004659 sterilization and disinfection Methods 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 11
- 229910052709 silver Inorganic materials 0.000 claims description 7
- 239000004332 silver Substances 0.000 claims description 7
- 239000002861 polymer material Substances 0.000 claims description 3
- 241000700605 Viruses Species 0.000 abstract description 10
- 239000012530 fluid Substances 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 3
- 244000052616 bacterial pathogen Species 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 22
- 230000000844 anti-bacterial effect Effects 0.000 description 22
- 241000894006 Bacteria Species 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 9
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 9
- 238000007751 thermal spraying Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 7
- 239000004745 nonwoven fabric Substances 0.000 description 7
- 230000001699 photocatalysis Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 239000000758 substrate Substances 0.000 description 5
- 239000003463 adsorbent Substances 0.000 description 4
- 238000012937 correction Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- RJQXTJLFIWVMTO-TYNCELHUSA-N Methicillin Chemical compound COC1=CC=CC(OC)=C1C(=O)N[C@@H]1C(=O)N2[C@@H](C(O)=O)C(C)(C)S[C@@H]21 RJQXTJLFIWVMTO-TYNCELHUSA-N 0.000 description 3
- 241000191967 Staphylococcus aureus Species 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229960003085 meticillin Drugs 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052758 niobium Inorganic materials 0.000 description 3
- 239000010955 niobium Substances 0.000 description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 229910002367 SrTiO Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000004068 calcium phosphate ceramic Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000004811 liquid chromatography Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Apparatus For Disinfection Or Sterilisation (AREA)
- Catalysts (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電気化学的セルを構成す
る光半導体と吸着機能をもつセラミックスの混合粉体を
利用した、殺菌機能と吸着機能を併せ有する光半導体を
用いた殺菌吸着機能体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sterilization / adsorption function body using an optical semiconductor having both a sterilization function and an adsorption function, which uses a mixed powder of an optical semiconductor constituting an electrochemical cell and a ceramic having an adsorption function. Regarding
【０００２】[0002]
【従来の技術】本出願人は先に光半導体を用いた機能材
料について提案した（特開平3-8448号）。この機能材料
は光半導体の電気化学的作用による殺菌効果を利用する
ものであり、低温溶射技術を用いて高温弱体基材表面に
光半導体を被着させることによって光半導体による電気
化学的作用を有効に発揮させることを可能とし、食品工
業や公害防止関連、医療分野等の各種分野に実用的な利
用を可能にするものである。The present applicant has previously proposed a functional material using an optical semiconductor (Japanese Patent Laid-Open No. 3-8448). This functional material utilizes the bactericidal effect due to the electrochemical action of the photo-semiconductor, and by applying the photo-semiconductor to the surface of the high temperature weak base material using the low temperature spraying technology, the electrochemical action of the photo-semiconductor is effective. It can be used for various purposes such as food industry, pollution control, and medical field.
【０００３】電気化学的作用を奏する光半導体として
は、ＴｉＯ2 、ＣｄＳ、ＣｄＳｅ、ＷＯ3 、Ｆｅ
2 Ｏ3 、ＳｒＴｉＯ3 、ＫＮｂＯ3 等が知られている。
これらの光半導体は単独でもある程度の電気化学的作用
を有するが、金属を担持することによって電極を用いず
に電気化学的作用を起こさせることができる。チタニア
は強い光触媒作用を有する物質であるがチタニアの微粒
子に白金を担持させたものでは著しく光触媒作用が向上
することが知られている。Examples of optical semiconductors having an electrochemical action include TiO 2 , CdS, CdSe, WO 3 and Fe.
2 O 3 , SrTiO 3 , KNbO 3 and the like are known.
These photo-semiconductors have a certain degree of electrochemical action by themselves, but by supporting a metal, it is possible to cause an electrochemical action without using an electrode. Although titania is a substance having a strong photocatalytic action, it is known that the photocatalytic action is remarkably improved in the case where platinum is supported on fine particles of titania.
【０００４】このようなチタニアの微粒子による光半導
体が強い光触媒機能を有するのはチタニア自体の作用の
強さとともに、微粒子状にしたことによって機能材料の
接触表面積を効果的に増大させることができるからであ
る。したがって、たとえば金属基材の表面に光半導体を
塗布したり、光半導体をバインダー中に練り込んで基材
に塗布したりするといった方法では十分な接触表面積を
とることができず、有効な電気化学的作用を起こさせる
ことができない。The reason why the photo-semiconductor made of such fine particles of titania has a strong photocatalytic function is that the contact surface area of the functional material can be effectively increased by making fine particles in addition to the strength of the action of titania itself. Is. Therefore, for example, a method of applying an optical semiconductor to the surface of a metal base material or kneading an optical semiconductor into a binder to apply the optical semiconductor to a base material cannot provide a sufficient contact surface area, and an effective electrochemical Can't cause a physical effect.
【０００５】この点で、本出願人が先に提案した光半導
体を用いた機能材料は金属の基材上に光半導体を溶射し
て被着させるものであり、基材表面に光半導体そのもの
を露出させて設けることができるから光半導体を直接的
に作用させることができること、および基材表面にポー
ラス状に形成されることから電極と光半導体とによる光
触媒作用が好適に作用するとともに接触表面積も十分に
とることができるという利点がある。また、微粉体を用
いて溶射することで低温溶射が可能になり、プラスチッ
ク等の高温に弱い材質のものに対しても光半導体を被着
させることができるといった特徴を有している。In this respect, the functional material using an optical semiconductor previously proposed by the applicant of the present invention is one in which an optical semiconductor is sprayed and deposited on a metal substrate, and the optical semiconductor itself is deposited on the surface of the substrate. Since it can be provided exposed, the photo-semiconductor can act directly, and since it is formed in a porous shape on the surface of the base material, the photocatalytic action of the electrode and the photo-semiconductor suitably acts and the contact surface area is also increased. There is an advantage that it can be taken sufficiently. Further, it is possible to perform low temperature spraying by spraying using fine powder, and it is possible to apply an optical semiconductor to a material such as plastic that is weak against high temperature.
【０００６】[0006]
【発明が解決しようとする課題】ところで、光半導体を
用いた機能材料は上記のように光半導体を低温溶射する
ことによって効果的な電気化学的作用を奏することがで
き、顕著な殺菌作用を有するものであるが、殺菌は瞬間
的になされるものではなく、ある程度の時間を要するか
ら、たとえば光半導体を被着させたフィルターに殺菌す
べき液体、気体を単に通過させるといった方法では有効
に殺菌作用を及ぼすことができず、有効な殺菌を行うこ
とができないといった問題点があった。By the way, a functional material using an optical semiconductor can exert an effective electrochemical action by spraying the optical semiconductor at a low temperature as described above, and has a remarkable bactericidal action. However, sterilization is not instantaneous and requires a certain amount of time. Therefore, for example, a method of simply passing a liquid or gas to be sterilized through a filter coated with an optical semiconductor is effective in sterilization. However, there is a problem in that effective sterilization cannot be performed.
【０００７】本発明は光半導体が有するひとつの作用で
ある殺菌作用を有効に発揮させるものとしてなされたも
のであり、上記のようなフィルターに流体を通過させる
といった一過性のものに対しても効果的な殺菌作用をな
すことを目的としてなされたものである。すなわち、本
発明は光半導体の殺菌作用をさらに効果的に発揮させる
ことができる機能体として提供するものであり、一過性
のものに対しても有効に適用することができる光半導体
を用いた殺菌吸着機能体を提供することを目的とする。The present invention has been made to effectively exhibit the bactericidal action, which is one of the actions of optical semiconductors, and is also applicable to a transient type such as passing a fluid through the filter as described above. It is designed to have an effective bactericidal action. That is, the present invention provides a functional body that can more effectively exhibit the bactericidal action of an optical semiconductor, and uses an optical semiconductor that can be effectively applied to a transient type. It is intended to provide a sterilizing and adsorbing function body.
【０００８】[0008]
【課題を解決するための手段】本発明は上記目的を達成
するため次の構成を備える。すなわち、基材表面に光半
導体セラミックスとアパタイト、ゼオライト、活性炭等
の吸着機能を有するセラミックスとの混合粉体から成る
複合セラミックスを溶射して成ることを特徴とする。ま
た、前記基材が高温弱体の高分子材料であり、微粉体の
混合粉体を使用して前記基材に低温溶射して成ることを
特徴とする。また、前記機能体は光半導体セラミックス
と金属により電気化学セルを形成したものであることを
特徴とする。また、前記電気化学セルを形成する金属と
して銀を使用したことを特徴とする。The present invention has the following constitution in order to achieve the above object. That is, it is characterized in that a composite ceramic comprising a mixed powder of an optical semiconductor ceramic and a ceramic having an adsorption function of apatite, zeolite, activated carbon or the like is sprayed on the surface of the base material. Further, the base material is a high-temperature weak polymer material, and a mixture of fine powders is used to spray the base material at a low temperature. Further, the functional body is characterized in that an electrochemical cell is formed from the optical semiconductor ceramic and a metal. In addition, silver is used as a metal forming the electrochemical cell.
【０００９】[0009]
【発明の概要】本発明に係る機能体は光半導体を基材表
面に被着させることによって光触媒作用をなさせるもの
であるが、基材表面に被着させる材料としてチタニア等
の光半導体とアパタイト、ゼオライト、活性炭等の吸着
機能を有するセラミックスの複合セラミックスを使用す
ることを特徴とする。アパタイト、ゼオライト、活性炭
はいずれも一定の吸着機能を有する材料として適用する
ものであり、これら吸着機能を有する材料と光半導体と
を混合し、基材に溶射によって被着させることを特徴と
する。SUMMARY OF THE INVENTION The functional body according to the present invention has a photocatalytic effect by depositing an optical semiconductor on the surface of a base material. As a material to be deposited on the surface of the base material, an optical semiconductor such as titania and apatite are used. It is characterized by using a composite ceramic of ceramics having an adsorption function of zeolite, activated carbon, and the like. Apatite, zeolite, and activated carbon are all applied as materials having a certain adsorbing function, and are characterized in that a material having these adsorbing functions and an optical semiconductor are mixed and deposited on a base material by thermal spraying.
【００１０】なお、アパタイトはＡ10（ＭＯ4)6 Ｘ2 の
組成をもつ鉱物の総称であり、種々の材料が含まれる
が、なかにはきわめて吸着機能の高い材料がある。たと
えば、ハイドロキシアパタイトＣａ10（ＰＯ4)6 （Ｏ
Ｈ）2 は顕著な吸着機能を有するものであり、本願発明
で好適に使用できるものである。ハイドロキシアパタイ
トはリン酸カルシウム系セラミックスで、骨と直接接合
することから人工骨、人工歯根として利用されている。
また、ハイドロキシアパタイトはイオン交換能にすぐれ
ており、Ｃａ2+のかわりにＣｄ2+やＨｇ2+などの公害イ
オンや、Ｓｒ2+、Ｂａ2+、Ｐｂ2+などの重金属イオンが
容易に置換されるという特徴を有している。また、ハイ
ドロキシアパタイトはその優れた吸着性能から分析装置
のガスクロマトグラフィ、液クロマトグラフィの吸着剤
としても使用されている。Apatite is a general term for minerals having a composition of A 10 (MO 4 ) 6 X 2 and includes various materials. Among them, there are materials having an extremely high adsorption function. For example, hydroxyapatite Ca 10 (PO 4 ) 6 (O
H) 2 has a remarkable adsorption function and can be suitably used in the present invention. Hydroxyapatite is a calcium phosphate ceramics and is used as an artificial bone or an artificial tooth root because it is directly bonded to bone.
Furthermore, hydroxyapatite is excellent ion exchange capacity, and pollution ions such as Cd 2+ and Hg 2+ instead of Ca 2+, Sr 2+, Ba 2+ , easily heavy metal ions such as Pb 2+ It has the characteristic of being replaced. Hydroxyapatite is also used as an adsorbent for gas chromatography and liquid chromatography in analyzers because of its excellent adsorption performance.
【００１１】本発明は上記のように光半導体と吸着機能
を有するセラミックスの複合セラミックスを使用するこ
とにより、細菌あるいはウイルスを吸着し、殺菌作用に
よって効果的な殺菌をなす機能体を提供しようとするも
のである。上記のハイドロキシアパタイトを使用する場
合は、ハイドロキシアパタイトが１３００℃程度で分解
し１６００℃程度の高温になるとリン酸が分離して酸化
カルシウムになることから、溶射温度が問題になるが、
溶射材料として微粉体材料を使用することによって約３
０００℃で瞬間的に溶射して被膜を形成することができ
る。とくに、低温溶射法による場合は温度制御技術を効
果的に生かすことが可能である。The present invention intends to provide a functional body which adsorbs bacteria or viruses and effectively sterilizes by the bactericidal action by using the composite ceramics of the optical semiconductor and the ceramics having the adsorption function as described above. It is a thing. When the above hydroxyapatite is used, when the hydroxyapatite is decomposed at about 1300 ° C. and becomes a high temperature of about 1600 ° C., phosphoric acid is separated and becomes calcium oxide, so the spraying temperature becomes a problem,
About 3 by using fine powder material as thermal spray material
The coating can be formed by instantaneous thermal spraying at 000 ° C. Particularly, in the case of the low temperature spraying method, it is possible to effectively use the temperature control technology.
【００１２】光半導体を溶射する際に基材に金属を使用
しない場合には電極となる金属を溶射材料に加えて光半
導体を溶射する。たとえば、機能体をフィルター等とし
て用いるため基材として高分子材料のクロス生地、不織
布を用いる場合には金属とともに光半導体を溶射する。
電極となる金属としてはニッケル等の適宜金属が使用で
きる。場合によっては、金属の無電解めっき技術も有効
である。光半導体を用いた機能体で殺菌性を考慮する場
合は、電極材料として銀を使用するのがとくに好適であ
る。銀はそれ自体で殺菌性を有しており、光半導体の電
極としての効果とともにその殺菌性を利用できるからで
ある。実際の溶射にあたっては銀の粉体と光半導体の粉
体、アパタイトの粉体を混合したものを溶射材料として
基材に溶射する。なお、基材を金属とする場合はとくに
電極用の金属を加える必要はない。When a metal is not used for the base material when the optical semiconductor is sprayed, the metal serving as an electrode is added to the spray material to spray the optical semiconductor. For example, when a cloth material or non-woven cloth made of a polymer material is used as the base material for using the functional body as a filter or the like, the optical semiconductor is sprayed together with the metal.
An appropriate metal such as nickel can be used as the metal forming the electrode. In some cases, metal electroless plating technology is also effective. When considering sterilization in a functional body using an optical semiconductor, it is particularly preferable to use silver as an electrode material. This is because silver has a bactericidal property by itself, and the bactericidal property can be utilized together with the effect as an electrode of an optical semiconductor. In actual thermal spraying, a mixture of silver powder, optical semiconductor powder, and apatite powder is sprayed onto a substrate as a thermal spray material. When the base material is a metal, it is not necessary to add a metal for the electrode.
【００１３】光半導体としては上記のチタニアの他、適
宜光半導体材料が使用できる。光半導体材料にはきわめ
て多種類のものがあるから材料コスト、製品の特性等に
応じて適宜材料を選択するのがよい。なお、チタニアは
まったく無害である点で、一般利用、医療用等として好
適である。As the optical semiconductor, other than the above-mentioned titania, an optical semiconductor material can be appropriately used. Since there are extremely many kinds of optical semiconductor materials, it is preferable to appropriately select the materials according to the material cost, product characteristics, and the like. In addition, since titania is completely harmless, it is suitable for general use, medical use, and the like.
【００１４】本願発明ではアパタイトを含む上記複合セ
ラミックスを基材に溶射して機能体を形成することを特
徴とするが、その溶射に際しては前述した低温溶射法が
好適に利用できる。この低温溶射法は微粉体（粒径５μ
ｍ〜２５μｍ程度）を用いて基材に溶射する方法で、溶
射材料は高温になるものの被溶射物である基材を熱破壊
せずに溶射する方法である（特公平3-60911 号、特公平
3-65430 号）。したがって、この方法を利用することに
よって金属はもちろん、プラスチック、布、紙等を基材
として使用することが可能になる。The present invention is characterized in that the above-mentioned composite ceramics containing apatite is sprayed on the base material to form a functional body, and the low temperature spraying method described above can be suitably used for the spraying. This low temperature spraying method uses fine powder (particle size 5μ
m to 25 μm), the thermal spraying material is a method of thermal spraying the thermal spraying material without causing thermal destruction of the substrate, which is the object to be sprayed although the temperature of the thermal spraying material is high (Japanese Patent Publication No. 3-60911, fair
3-65430). Therefore, by using this method, not only metal but also plastic, cloth, paper and the like can be used as the base material.
【００１５】アパタイトを含む上記複合セラミックスを
溶射して成る機能体は基材の表面に光半導体が露出され
た態様で被着されるから、たとえば液体中に機能体を浸
漬した場合は光半導体が直接的に作用して有効な光触媒
作用を行うことができる。また、溶射方法によって光半
導体を被着させることによって基材表面に光半導体がポ
ーラス状に形成され光半導体の接触面積を大きくするこ
とができて効果的な光触媒作用をなすことができる。Since the functional body formed by spraying the above-mentioned composite ceramics containing apatite is deposited on the surface of the base material in such a manner that the optical semiconductor is exposed, for example, when the functional body is immersed in a liquid, the optical semiconductor is It can act directly to provide effective photocatalysis. Further, by depositing the optical semiconductor by the thermal spraying method, the optical semiconductor is formed in a porous shape on the surface of the base material, the contact area of the optical semiconductor can be increased, and an effective photocatalytic action can be performed.
【００１６】本願発明でアパタイト等の吸着材を併用し
た複合セラミックスによる機能体の作用は、まず吸着材
の作用によって細菌あるいはウイルスが機能体に吸着さ
れ、吸着された細菌あるいはウイルスが光半導体による
光触媒作用によって殺菌されるというものである。アパ
タイト等の吸着材の作用によって細菌あるいはウイルス
等を吸着することにより、液体あるいは気体が一過的に
通過するようなもの、たとにばフィルター等に本機能体
を適用した場合でも有効な殺菌作用をなすことができ
る。吸着用のハイドロキシアパタイトの場合は比表面積
が約１００ｍ2 ／ｇ以上あり、タンパク質を特徴的に吸
着する作用があることから、殺菌用としてとくに有効に
利用することができる。In the present invention, the function of the functioning body by the composite ceramics in which an adsorbent such as apatite is also used is as follows. First, bacteria or viruses are adsorbed on the functioning body by the function of the adsorbing material, and the adsorbed bacteria or viruses are photocatalysts by optical semiconductors. It is sterilized by the action. A bactericidal action that allows liquids or gases to pass through temporarily by adsorbing bacteria or viruses due to the action of adsorbents such as apatite, and even when this function is applied to the occasional filter, etc. You can In the case of hydroxyapatite for adsorption, it has a specific surface area of about 100 m 2 / g or more, and since it has an action of characteristically adsorbing proteins, it can be particularly effectively used for sterilization.
【００１７】[0017]
【実施例】以下、本発明の好適な実施例について説明す
る。 （実施例１）光半導体としてチタニア、電極用金属とし
て銀を使用し、これにハイドロキシアパタイトを加えて
溶射材料とし、これを高分子材料の不織布の基材に低温
溶射法によって溶射した。不織布は熱破壊されることな
く、チタニア、銀、ハイドロキシアパタイトの複合材料
が被着して得られた。得られた材料は不織布本来のフレ
キシビリティを保持するものであった。The preferred embodiments of the present invention will be described below. (Example 1) Titania was used as an optical semiconductor and silver was used as a metal for electrodes. Hydroxyapatite was added to this to prepare a thermal spray material, which was sprayed onto a non-woven fabric substrate of a polymeric material by a low temperature spraying method. The non-woven fabric was obtained by depositing a composite material of titania, silver and hydroxyapatite without thermal destruction. The obtained material retained the original flexibility of the nonwoven fabric.
【００１８】上記不織布は液体、気体を一過性に通過さ
せて、かつ殺菌作用をなすものに好適に利用することが
できる。その使用例としては、空気清浄機のエアフィル
ター、マスク材料、壁材料等として利用することができ
る。エアフィルター、壁材料等として使用した場合には
室内の細菌の殺菌に有効であり、無菌的な清浄室内を維
持するに好適である。また、マスクに利用することによ
って高い殺菌性能、抗菌性能を有する機能性マスクとし
て提供することができる。The above-mentioned non-woven fabric can be suitably used as a non-woven fabric which allows liquids and gases to pass therethrough temporarily and has a bactericidal action. As an example of its use, it can be used as an air filter of an air cleaner, a mask material, a wall material and the like. When used as an air filter, a wall material, etc., it is effective for sterilizing indoor bacteria and is suitable for maintaining a sterile clean room. Further, when used as a mask, it can be provided as a functional mask having high sterilization performance and antibacterial performance.
【００１９】なお、殺菌機能の有効性を示すものとし
て、不織布に光半導体および電極金属としての銀を低温
溶射法によって被着させたサンプルについての殺菌試験
例について説明する。なお、使用した光半導体はチタニ
ア系、ニオブ系の光半導体である。試験内容はメチシリ
ン耐性黄色ブドウ球菌（ＭＲＳＡ）に対する殺菌効果の
評価試験である。試験操作はメチシリン耐性黄色ブドウ
球菌の菌液（０．５ｍｌ）をサンプル（５cm×５cm）の
表面に一様に接種し、室温（２０〜２５℃）、７５０〜
８００lux の光照射下で作用させ、作用開始後１５分と
３０分でサンプルの生残菌を洗い出し、この洗い出し液
の生菌数を測定する方法によった。As an example showing the effectiveness of the sterilization function, a sterilization test example of a sample in which a non-woven fabric is coated with an optical semiconductor and silver as an electrode metal by a low temperature spraying method will be described. The used optical semiconductors are titania-based and niobium-based optical semiconductors. The test content is an evaluation test of the bactericidal effect against methicillin-resistant Staphylococcus aureus (MRSA). The test procedure was to uniformly inoculate the surface of the sample (5 cm x 5 cm) with the methicillin-resistant Staphylococcus aureus bacterium solution (0.5 ml), and at room temperature (20 to 25 ° C), 750 to 750.
The cells were allowed to act under irradiation with light of 800 lux, and the residual bacteria in the sample were washed out 15 and 30 minutes after the start of the action, and the viable cell count of this washout solution was measured.
【００２０】下記の表にサンプル１、２について上記試
験を行った結果を示す。The following table shows the results of the above-mentioned tests performed on Samples 1 and 2.
【００２１】[0021]
【表１】 [Table 1]
【００２２】試験結果から、サンプル２についてはきわ
めて顕著な殺菌作用が認められた。なお、サンプル１は
チタニア系の光半導体を使用したもの、サンプル２はニ
オブ系の光半導体を使用したものである。この試験例で
はサンプル１は３０分経過後で対象区にくらべ２けた程
度の菌数の減少は見られるもののサンプル２と比較する
とその作用はかなり低い。ただし、殺菌効果試験は同一
の材料を使用した場合でもサンプルによって作用効果の
相違がかなり見られるので、この実験結果からのみでニ
オブ系がより優れているということはできない。From the test results, Sample 2 was found to have a very remarkable bactericidal action. Sample 1 uses a titania-based optical semiconductor, and sample 2 uses a niobium-based optical semiconductor. In this test example, Sample 1 shows a decrease in the number of bacteria by about two orders of magnitude after 30 minutes, but its action is considerably lower than that of Sample 2. However, in the bactericidal effect test, even if the same material is used, there is a considerable difference in action and effect depending on the sample, so it cannot be said from the results of this experiment that the niobium system is superior.
【００２３】上記試験結果からも明らかなように、光半
導体を用いた機能体は殺菌機能として顕著な作用を有し
ている。メチシリン耐性黄色ブドウ球菌（ＭＲＳＡ）は
その感染が問題になっているものであるが、本発明に係
る機能体はこのような耐性菌に対しても有効な殺菌効果
を有する点で特徴的である。本願に係る光半導体を用い
た機能体は、従来の光半導体に加えてアパタイト等の吸
着材を併用することによって細菌あるいはウイルスが有
効に吸着され、これによってさらに有効な殺菌作用をな
すものである。もちろん、上記実施例のような不織布に
対し溶射して形成した機能体の他、ステンレス等の金属
板、あるいは基材に金属メッキを施してさらに複合セラ
ミックスを溶射して成る機能体等の場合も同様な作用効
果を得ることが可能である。また、本願の機能体はその
効果は劣るものの、プラスチック材やセラミックスの焼
結体、セメント等にフィラーとして混入して使用するこ
とも可能である。As is clear from the above test results, the functional body using an optical semiconductor has a remarkable bactericidal function. Infection of methicillin-resistant Staphylococcus aureus (MRSA) has been a problem, but the functional body according to the present invention is characteristic in that it has an effective bactericidal effect against such resistant bacteria. . The functional body using the optical semiconductor according to the present application is one in which bacteria or viruses are effectively adsorbed by using an adsorbent such as apatite in addition to the conventional optical semiconductor, and thereby a more effective bactericidal action is achieved. . Of course, in addition to the functional body formed by thermal spraying on the non-woven fabric as in the above embodiment, a functional body formed by spraying a composite ceramic on a metal plate such as stainless steel or a base material is further applied. It is possible to obtain the same effect. Further, although the functional body of the present application is inferior in its effect, it can be used as a filler mixed with a sintered body of plastic material or ceramics, cement or the like.
【００２４】[0024]
【発明の効果】本発明に係る光半導体を用いた機能体に
よれば、上述したように、アパタイト等の吸着機能を有
するセラミックスと光半導体との複合セラミックスを基
材に被着して成ることから、機能体に細菌あるいはウイ
ルスを吸着させ、吸着された細菌あるいはウイルスを光
半導体による殺菌効果によって殺菌することで、きわめ
て有効な殺菌作用をなすことができるとともに、フィル
ター等のように流体が一過性的に通過するようなものに
対して適用しても有効な殺菌作用を奏することができる
といった著効を奏する。As described above, according to the functional body using an optical semiconductor of the present invention, a composite ceramic of an optical semiconductor and a ceramic having an adsorption function such as apatite is adhered to a base material. Therefore, by adsorbing bacteria or viruses to the functional body and sterilizing the adsorbed bacteria or viruses by the bactericidal effect of the optical semiconductor, it is possible to perform an extremely effective bactericidal action, and a fluid such as a filter Even if it is applied to a material that passes through transiently, it has a remarkable effect that it can exert an effective bactericidal action.
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成６年１月１７日[Submission date] January 17, 1994
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】請求項１[Name of item to be corrected] Claim 1
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２４[Name of item to be corrected] 0024
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２４】[0024]
【発明の効果】本発明に係る光半導体を用いた殺菌吸着
機能体によれば、上述したように、アパタイト等の吸着
機能を有するセラミックスと光半導体との複合セラミッ
クスを基材に被着して成ることから、機能体に細菌ある
いはウイルスを吸着させ、吸着された細菌あるいはウイ
ルスを光半導体による殺菌効果によって殺菌すること
で、きわめて有効な殺菌作用をなすことができるととも
に、フィルター等のように流体が一過性的に通過するよ
うなものに対して適用しても有効な殺菌作用を奏するこ
とができるといった著効を奏する。As described above, according to the sterilization / adsorption functional body using an optical semiconductor according to the present invention, as described above, a composite ceramic of an optical semiconductor and a ceramic having an adsorption function such as apatite is used as a base material. Since it is adhered, bacteria or viruses can be adsorbed on the functional body, and the adsorbed bacteria or viruses can be sterilized by the sterilizing effect of the optical semiconductor, so that an extremely effective bactericidal action can be achieved and a filter, etc. As described above, even when applied to a material in which a fluid temporarily passes, an effective bactericidal action can be exerted, which is a remarkable effect.
Claims (4)
タイト、ゼオライト、活性炭等の吸着機能を有するセラ
ミックスとの混合粉体から成る複合セラミックスを溶射
して成ることを特徴とする光半導体を用いた機能体。1. A function using an optical semiconductor, characterized in that the surface of a base material is sprayed with a composite ceramic comprising a mixed powder of an optical semiconductor ceramic and a ceramic having an adsorption function of apatite, zeolite, activated carbon or the like. body.
粉体の混合粉体を使用して前記基材に低温溶射して成る
ことを特徴とする請求項１記載の光半導体を用いた殺菌
吸着機能体。2. The optical semiconductor according to claim 1, wherein the base material is a high-temperature weak polymer material, and is obtained by spraying the base material at low temperature using a mixed powder of fine powder. The sterilizing and adsorbing function body.
化学セルを形成したものであることを特徴とする請求項
１または２記載の光半導体を用いた殺菌吸着機能体。3. A sterilization / adsorption functional body using an optical semiconductor according to claim 1 or 2, wherein an electrochemical cell is formed from the optical semiconductor ceramic and a metal.
使用したことを特徴とする請求項３記載の光半導体を用
いた殺菌吸着機能体。4. A sterilizing and adsorbing function body using an optical semiconductor according to claim 3, wherein silver is used as a metal forming the electrochemical cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5041002A JP2585946B2 (en) | 1993-03-02 | 1993-03-02 | Sterilization adsorption function body using optical semiconductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5041002A JP2585946B2 (en) | 1993-03-02 | 1993-03-02 | Sterilization adsorption function body using optical semiconductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06254139A true JPH06254139A (en) | 1994-09-13 |
| JP2585946B2 JP2585946B2 (en) | 1997-02-26 |
Family
ID=12596205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5041002A Expired - Lifetime JP2585946B2 (en) | 1993-03-02 | 1993-03-02 | Sterilization adsorption function body using optical semiconductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2585946B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10130112A (en) * | 1996-10-31 | 1998-05-19 | Agency Of Ind Science & Technol | Composite material inhibiting propagation of various saprophytes |
| WO1999033566A1 (en) * | 1997-12-25 | 1999-07-08 | Japan As Represented By Director General Of The Agency Of Industrial Science And Technology | Photocatalyst powder for environmental purification, polymer composition containing the powder and molded article thereof, and processes for producing these |
| JPH11333451A (en) * | 1998-05-28 | 1999-12-07 | Raizaa Kogyo Kk | Method and apparatus for sterilization/purification by ultraviolet light |
| WO2001091701A1 (en) * | 2000-05-31 | 2001-12-06 | National Institute Of Advanced Industrial Science And Technology | Deodorizing/antifouling composition for dental product |
| US7396796B2 (en) | 2000-10-20 | 2008-07-08 | Noritake Co., Limited | Treatment agent, method and device for treating hazardous substances |
| CN100417592C (en) * | 2004-12-01 | 2008-09-10 | 长春理工大学 | Zeolite and cadmium sulfide nano composite material and preparation method thereof |
| JP2019069430A (en) * | 2017-10-11 | 2019-05-09 | 株式会社フジコー | Method for producing photocatalyst sheet and photocatalyst sheet |
| JP6890861B1 (en) * | 2020-10-21 | 2021-06-18 | 株式会社Ｈａｋｕｔａｋａクリエイトコーポレーション | Manufacturing method of sanitary mask with antibacterial member |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3337023B2 (en) * | 2000-04-14 | 2002-10-21 | 卓郎 石橋 | Water purification pot using titanium dioxide photocatalyst |
| JP6371014B1 (en) * | 2016-12-09 | 2018-08-08 | Ｄｒ．Ｃ医薬株式会社 | Pharmaceutical preparations and medical devices |
| JP6399722B1 (en) | 2018-01-26 | 2018-10-03 | Ｄｒ．Ｃ医薬株式会社 | Pharmaceutical preparations and medical devices |
-
1993
- 1993-03-02 JP JP5041002A patent/JP2585946B2/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10130112A (en) * | 1996-10-31 | 1998-05-19 | Agency Of Ind Science & Technol | Composite material inhibiting propagation of various saprophytes |
| WO1999033566A1 (en) * | 1997-12-25 | 1999-07-08 | Japan As Represented By Director General Of The Agency Of Industrial Science And Technology | Photocatalyst powder for environmental purification, polymer composition containing the powder and molded article thereof, and processes for producing these |
| JPH11333451A (en) * | 1998-05-28 | 1999-12-07 | Raizaa Kogyo Kk | Method and apparatus for sterilization/purification by ultraviolet light |
| WO2001091701A1 (en) * | 2000-05-31 | 2001-12-06 | National Institute Of Advanced Industrial Science And Technology | Deodorizing/antifouling composition for dental product |
| US6825155B2 (en) | 2000-05-31 | 2004-11-30 | National Institute Of Advanced Industrial Science And Technology | Composition for deodorization and decontamination of dental product |
| US7396796B2 (en) | 2000-10-20 | 2008-07-08 | Noritake Co., Limited | Treatment agent, method and device for treating hazardous substances |
| CN100417592C (en) * | 2004-12-01 | 2008-09-10 | 长春理工大学 | Zeolite and cadmium sulfide nano composite material and preparation method thereof |
| JP2019069430A (en) * | 2017-10-11 | 2019-05-09 | 株式会社フジコー | Method for producing photocatalyst sheet and photocatalyst sheet |
| JP6890861B1 (en) * | 2020-10-21 | 2021-06-18 | 株式会社Ｈａｋｕｔａｋａクリエイトコーポレーション | Manufacturing method of sanitary mask with antibacterial member |
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|---|---|
| JP2585946B2 (en) | 1997-02-26 |
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