JP2001261337A - Method of producing titanium dioxide microparticle compounded with silver microparticle - Google Patents
Method of producing titanium dioxide microparticle compounded with silver microparticleInfo
- Publication number
- JP2001261337A JP2001261337A JP2000081551A JP2000081551A JP2001261337A JP 2001261337 A JP2001261337 A JP 2001261337A JP 2000081551 A JP2000081551 A JP 2000081551A JP 2000081551 A JP2000081551 A JP 2000081551A JP 2001261337 A JP2001261337 A JP 2001261337A
- Authority
- JP
- Japan
- Prior art keywords
- silver
- titanium
- fine particles
- titanium dioxide
- raw material
- 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.)
- Pending
Links
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 51
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000004332 silver Substances 0.000 title claims abstract description 36
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 35
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title abstract description 11
- 239000011859 microparticle Substances 0.000 title abstract 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 239000010936 titanium Substances 0.000 claims abstract description 17
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 16
- 239000007789 gas Substances 0.000 claims abstract description 10
- 229910052786 argon Inorganic materials 0.000 claims abstract description 8
- 239000010419 fine particle Substances 0.000 claims description 40
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 229910001923 silver oxide Inorganic materials 0.000 claims description 3
- 229960005196 titanium dioxide Drugs 0.000 claims 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 229940009188 silver Drugs 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000003575 carbonaceous material Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 230000000844 anti-bacterial effect Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- -1 diamine silver nitrate Chemical class 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000001699 photocatalysis Effects 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 102100032566 Carbonic anhydrase-related protein 10 Human genes 0.000 description 1
- 102100033029 Carbonic anhydrase-related protein 11 Human genes 0.000 description 1
- 101100321669 Fagopyrum esculentum FA02 gene Proteins 0.000 description 1
- 101000867836 Homo sapiens Carbonic anhydrase-related protein 10 Proteins 0.000 description 1
- 101000867841 Homo sapiens Carbonic anhydrase-related protein 11 Proteins 0.000 description 1
- 101001075218 Homo sapiens Gastrokine-1 Proteins 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 229910000888 goloid Inorganic materials 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 230000015843 photosynthesis, light reaction Effects 0.000 description 1
- 229940100890 silver compound Drugs 0.000 description 1
- 150000003379 silver compounds Chemical class 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver nitrate Substances [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Catalysts (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、抗菌性および光
触媒作用を向上させた銀微粒子を複合した酸化チタン微
粒子の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing titanium oxide fine particles in which silver fine particles having improved antibacterial properties and photocatalytic action are combined.
【０００２】[0002]
【従来の技術】従来より各種の金属微粒子を複合した二
酸化チタン微粒子は、特開平８−９９８１２号公報、特
開平１１−４７６１１号公報、特開平１１−３００２１
５号公報などに記載されている。2. Description of the Related Art Conventionally, titanium dioxide fine particles in which various kinds of metal fine particles are compounded are disclosed in JP-A-8-99812, JP-A-11-47611, and JP-A-11-30021.
No. 5 publication.
【０００３】[0003]
【発明が解決しようとする課題】上記の公報に記載され
ているように、特開平８−９９８１２号公報では二酸化
チタン微粒子を硝酸ジアミン銀溶液で処理して、その表
面に銀を析出させる方法であり、特開平１１−４７６１
１号公報では、有機金属化合物ゴロイド粒子を二酸化チ
タン微粒子の表面に付着させた後、焼成してその金属を
担持させる方法であり、また、特開平１１−３００２１
５号公報では二酸化チタン微粒子に金属をスパッタリン
グして金属の被覆を形成させる方法である。As described in the above publication, Japanese Unexamined Patent Publication No. 8-99812 discloses a method in which titanium dioxide fine particles are treated with a diamine silver nitrate solution to deposit silver on the surface thereof. Yes, JP-A-11-4761
Japanese Patent Application Laid-Open No. 11-30021 discloses a method in which organometallic compound goloid particles are adhered to the surface of titanium dioxide fine particles and then fired to support the metal.
No. 5 discloses a method of forming a metal coating by sputtering metal on titanium dioxide fine particles.
【０００４】これらの方法は、二酸化チタン微粒子を製
造し、後処理で銀などの金属皮膜を形成するので、製造
コストがかかり、密着性や分散性にも問題があった。[0004] In these methods, titanium dioxide fine particles are produced and a metal film such as silver is formed by a post-treatment, so that the production cost is high and there are problems in adhesion and dispersibility.
【０００５】そこで本発明は、銀微粒子を複合した二酸
化チタン微粒子を、直流アークプラズマ装置において、
二酸化チタン微粒子の製造工程で同時に銀微粒子を複合
でき製造方法を提供することを目的としている。Accordingly, the present invention provides a method for producing titanium dioxide fine particles which are composited with silver fine particles in a DC arc plasma apparatus.
It is an object of the present invention to provide a production method by which silver fine particles can be simultaneously compounded in the production process of titanium dioxide fine particles.
【０００６】[0006]
【課題を解決するための手段】本発明は、直流アークプ
ラズマ装置において、銀およびチタンを含有した原料を
消費アノード電極とし、カソード電極からアルゴンガス
等のプラズマフレームを発生させ、消費アノードの原料
を加熱、蒸発させ、そのプラズマ状態の原料を酸化、冷
却することを特徴とする銀微粒子を複合した二酸化チタ
ン微粒子の製造方法が提供される。According to the present invention, in a DC arc plasma apparatus, a raw material containing silver and titanium is used as a consumed anode electrode, a plasma flame such as argon gas is generated from a cathode electrode, and the consumed anode raw material is used. A method for producing titanium dioxide fine particles combined with silver fine particles, characterized by heating, evaporating, and oxidizing and cooling the raw material in a plasma state.
【０００７】上記の銀およびチタンを含有した原料とし
ては、銀または酸化銀などの銀化合物と、チタンまたは
酸化チタンと、炭素材料とを含有した導電性コンポジッ
ト原料を使用することができる。アークプラズマ装置で
は、銀は酸化されず金属銀として微粒子化できることを
発見し、本発明の銀微粒子を複合した二酸化チタン微粒
子を簡単に製造することができた。As the raw material containing silver and titanium, a conductive composite raw material containing a silver compound such as silver or silver oxide, titanium or titanium oxide, and a carbon material can be used. In the arc plasma apparatus, it was discovered that silver was not oxidized and could be formed into fine particles as metallic silver, and titanium dioxide fine particles combined with silver fine particles of the present invention could be easily produced.
【０００８】[0008]
【発明の実施の形態】本発明で用いられる直流アークプ
ラズマ法は、直流アークプラズマ装置を用い、各種金属
成分を有する原料を消費アノート電極とし、カソード電
極からアルゴンガス等のプラズマフレームを発生させ、
消費アノードの原料を加熱、蒸発させ、そのプラズマ状
態の金属成分を酸化、冷却することによって各種の金属
酸化物超微粒子を製造することができる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The direct current arc plasma method used in the present invention uses a direct current arc plasma apparatus, uses raw materials having various metal components as consumed anode electrodes, and generates a plasma flame of argon gas or the like from a cathode electrode.
By heating and evaporating the raw material of the consumed anode and oxidizing and cooling the metal component in the plasma state, various kinds of ultrafine metal oxide particles can be produced.
【０００９】上記の直流アークプラズマ法で製造された
平均粒径２０〜１００ｎｍの銀微粒子を複合した二酸化
チタン微粒子は、水や有機溶媒に対して分散性に富み、
高濃度のスラリーを製造できるという特徴を有してい
る。The titanium dioxide fine particles composited with silver fine particles having an average particle diameter of 20 to 100 nm produced by the DC arc plasma method are rich in dispersibility in water and organic solvents.
It has the feature that a high concentration slurry can be produced.
【００１０】スラリー化に用いられる有機溶媒として
は、エチルアルコール、イソプロピルアルコール、ｎ−
プロピルアルコール、ｎ−アミルアルコール、エチレン
グリコール、ジエチレングリコールなどのアルコール
類、トルエン、キシレン等の炭化水素系溶媒、メチルセ
ルソルブ、プチルセルソルブ、カルビトールなどのエー
テル類、メチルエチルケトン、メチルイソブチルケトン
などのケトン類、酢酸エチル、酢酸ブチルなどのエステ
ル類などを挙げることができる。As the organic solvent used for slurrying, ethyl alcohol, isopropyl alcohol, n-
Propyl alcohol, n-amyl alcohol, alcohols such as ethylene glycol and diethylene glycol, hydrocarbon solvents such as toluene and xylene, methylcellosolve, butylcellosolve, ethers such as carbitol, methyl ethyl ketone, ketones such as methyl isobutyl ketone, Esters such as ethyl acetate and butyl acetate can be exemplified.
【００１１】また、銀微粒子を複合した二酸化チタン微
粒子のスラリーにはバインダー成分を配合してもよく、
各種の有機や無機のバインダーが使用できる。Further, a binder component may be blended in the slurry of titanium dioxide fine particles in which silver fine particles are combined,
Various organic and inorganic binders can be used.
【００１２】[0012]
【実施例】以下に実施例を挙げて具体的に本発明を説明
する。EXAMPLES The present invention will be specifically described below with reference to examples.
【００１３】実施例１ 直流アークプラズマ装置で、二酸化チタン粉末９７重量
％および銀粉末３重量％からなる金属原料に炭素材料を
加え焼成した導電性コンポジットを消費アノード電極と
し、カソード電極からアルゴンガス等のプラズマフレー
ムを発生させ、消費アノードの合金を加熱、蒸発させ、
そのプラズマ状態のチタンおよび銀に酸素を供給して酸
化および冷却し、微粒子を得た。ＢＥＴ換算で平均粒径
３６ｎｍ、銀を１２重量％含有した銀微粒子複合の二酸
化チタン微粒子であった。EXAMPLE 1 In a DC arc plasma apparatus, a conductive material obtained by adding a carbon material to a metal material consisting of 97% by weight of titanium dioxide powder and 3% by weight of silver powder and firing was used as a consumed anode electrode, and an argon gas or the like was fed from a cathode electrode. A plasma flame is generated, and the alloy of the consumed anode is heated and evaporated,
Oxygen was supplied to titanium and silver in the plasma state to oxidize and cool, thereby obtaining fine particles. The titanium dioxide fine particles were a silver fine particle composite having an average particle diameter of 36 nm in terms of BET and containing 12% by weight of silver.
【００１４】実施例２ 直流アークプラズマ装置で、二酸化チタン粉末９５重量
％および銀粉末５重量％からなる金属原料に炭素材料を
加え焼成した導電性コンポジットを消費アノード電極と
し、カソード電極からアルゴンガス等のプラズマフレー
ムを発生させ、消費アノードの合金を加熱、蒸発させ、
そのプラズマ状態のチタンおよび銀に酸素を供給して酸
化および冷却し、微粒子を得た。ＢＥＴ換算で平均粒径
２７ｎｍ、銀を１７重量％含有した銀微粒子複合の二酸
化チタン微粒子であった。Example 2 A conductive composite obtained by adding a carbon material to a metal raw material composed of 95% by weight of titanium dioxide powder and 5% by weight of silver powder in a DC arc plasma apparatus and firing was used as a consumed anode electrode, and an argon gas or the like was fed from a cathode electrode. A plasma flame is generated, and the alloy of the consumed anode is heated and evaporated,
Oxygen was supplied to titanium and silver in the plasma state to oxidize and cool, thereby obtaining fine particles. It was a silver fine particle composite titanium dioxide fine particle having an average particle diameter of 27 nm in terms of BET and containing 17% by weight of silver.
【００１５】比較例１ 直流アークプラズマ装置で、二酸化チタン粉末１００重
量％の金属原料に炭素材料を加え焼成した導電性コンポ
ジットを消費アノード電極とし、カソード電極からアル
ゴンガス等のプラズマフレームを発生させ、消費アノー
ドの合金を加熱、蒸発させ、そのプラズマ状態のチタン
酸素を供給して酸化および冷却し、微粒子を得た。ＢＥ
Ｔ換算で平均粒径４５ｎｍの二酸化チタン微粒子であっ
た。Comparative Example 1 In a direct current arc plasma apparatus, a conductive material obtained by adding a carbon material to a metal raw material of 100% by weight of titanium dioxide powder and firing was used as a consumed anode electrode, and a plasma flame of argon gas or the like was generated from a cathode electrode. The alloy of the consumed anode was heated and evaporated, and titanium oxide in a plasma state was supplied to oxidize and cool to obtain fine particles. BE
The titanium dioxide particles had an average particle size of 45 nm in terms of T.
【００１６】（アンモニアの光分解試験）各微粒子を約
１ｇにおい袋（ミヤコビニル加工所製）に入れ、ヒート
シールした後、空気３リットルを封入し、２８％のアン
モニア水（小宗化学薬品社製、特級）を添加し、アンモ
ニアが５００ｐｐｍとなるようにした。このにおい袋を
室温で紫外線ランプ（松下電器産業社製、ブラックライ
トブルー蛍光灯「ＦＬ ２０Ｓ ＢＬ−Ｂ」）を照射
し、５分、１０分、３０分および６０分後の袋内のガス
濃度をガス検知管（ガステック社製）で測定した。その
結果を表１に示す。(Photolysis Test of Ammonia) Each fine particle was put in an odor bag (manufactured by Miyako Vinyl Processing Co., Ltd.) about 1 g, heat-sealed, sealed with 3 liters of air, and treated with 28% ammonia water (manufactured by Komune Chemical Co., Ltd.). (Special grade) was added so that the amount of ammonia became 500 ppm. The odor bag was irradiated with an ultraviolet lamp (manufactured by Matsushita Electric Industrial Co., Ltd., black light blue fluorescent lamp "FL 20S BL-B") at room temperature, and the gas concentration in the bag after 5, 10, 30 and 60 minutes was measured. The measurement was performed using a gas detector tube (manufactured by Gastec). Table 1 shows the results.
【００１７】（暗所抗菌性試験）肉抽出液３０％、カザ
ミノ酸１．７５％、可溶性デンプン０．１５％からなる
ＭＨＢ培地を１０ｍｌを注入した各試験管に、各微粒子
をそれぞれ２５μｇ／ｍｌ、５０μｇ／ｍｌ、１００μ
ｇ／ｍｌ、２００μｇ／ｍｌ、４００μｇ／ｍｌ、８０
０μｇ／ｍｌ、１６００μｇ／ｍｌおよび３２００μｇ
／ｍｌとなるように添加し、そこに黄色ブドウ球菌を接
種し、暗所、３５〜３７℃の温度条件で、２４時間振と
うして培養した。菌の発育の有無を調べ、発育が認めら
れない試料の最小濃度（最小発育阻止濃度：ＭＩＣ）を
求めた。その結果を表１に示す。(Dark place antibacterial test) Into each test tube into which 10 ml of MHB medium composed of 30% of meat extract, 1.75% of casamino acid and 0.15% of soluble starch was injected, 25 μg / ml of each fine particle was added. , 50 μg / ml, 100 μ
g / ml, 200 μg / ml, 400 μg / ml, 80
0 μg / ml, 1600 μg / ml and 3200 μg
/ Ml, inoculated with Staphylococcus aureus, and cultured with shaking in a dark place at a temperature of 35 to 37 ° C for 24 hours. The presence or absence of growth of the bacterium was examined, and the minimum concentration (minimum inhibitory concentration: MIC) of the sample in which no growth was observed was determined. Table 1 shows the results.
【００１８】[0018]
【表１】 [Table 1]
【００１９】[0019]
【発明の効果】本発明の製造方法は、チタンおよび銀を
含有した原料を消費アノード電極とし、カソード電極か
らアルゴンガス等のプラズマフレームを発生させ、消費
アノード電極のチタンおよび銀を加熱、蒸発させ、その
プラズマ状態のチタンおよび銀に酸素を吹き付け、酸
化、冷却して製造されているので、チタンのみ選択的に
酸化され、銀微粒子が二酸化チタン微粒子と複合化され
るので、一工程で粒径の小さな銀微粒子を複合した二酸
化チタン微粒子を製造することができる。また、製造さ
れた微粒子は、水や有機溶媒でスラリー化が容易であ
り、光触媒効果や暗所での抗菌性という効果もある。According to the production method of the present invention, a raw material containing titanium and silver is used as a consumed anode electrode, a plasma flame such as argon gas is generated from a cathode electrode, and the titanium and silver of the consumed anode electrode are heated and evaporated. Oxygen is sprayed, oxidized and cooled on titanium and silver in the plasma state, so that only titanium is selectively oxidized and silver fine particles are combined with titanium dioxide fine particles, so that the particle size can be reduced in one step. Titanium dioxide fine particles in which small silver fine particles are combined. In addition, the produced fine particles can be easily slurried with water or an organic solvent, and have an effect of a photocatalytic effect and an antibacterial property in a dark place.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ０１Ｊ 35/02 Ｂ０１Ｄ 53/36 Ｊ Ｅ Ｆターム(参考） 4D048 AA08 AB03 BA05X BA05Y BA07X BA07Y BA34X BA34Y BB01 EA01 4G047 CA05 CB04 CC03 CD03 4G069 AA02 AA03 AA08 AA12 BA04A BA04B BA08A BA08B BA08C BA48A BB02A BB02B BB04A BB04B BC32A BC32B BC50A BC50B BD04A BD04B BD04C CA02 CA10 CA11 CA17 DA05 FA02 FB02 FB07 FB58 FB61 4H011 AA02 BB18 DG02 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) B01J 35/02 B01D 53/36 JEF Term (Reference) 4D048 AA08 AB03 BA05X BA05Y BA07X BA07Y BA34X BA34Y BB01 EA01 4G047 CA05 CB04 CC03 CD03 4G069 AA02 AA03 AA08 AA12 BA04A BA04B BA08A BA08B BA08C BA48A BB02A BB02B BB04A BB04B BC32A BC32B BC50A BC50B BD04A BD04B BD04C CA02 CA10 CA11 CA17 DA05 FA02 FB02 FB02 FB02 A02
Claims (3)
よびチタンを含有した原料を消費アノード電極とし、カ
ソード電極からアルゴンガス等のプラズマフレームを発
生させ、消費アノードの原料を加熱、蒸発させ、そのプ
ラズマ状態の原料を酸化、冷却することを特徴とする銀
微粒子を複合した二酸化チタン微粒子の製造方法。In a DC arc plasma apparatus, a raw material containing silver and titanium is used as a consumed anode electrode, a plasma flame of argon gas or the like is generated from a cathode electrode, and the raw material of the consumed anode is heated and evaporated to form a plasma state. A method for producing titanium dioxide fine particles in which silver fine particles are composited, comprising oxidizing and cooling the raw material.
と、チタンまたは二酸化チタンと、炭素とを含有した導
電性コンポジットであることを特徴とする請求項１記載
の銀微粒子を複合した二酸化チタン微粒子の製造方法。2. The composite material according to claim 1, wherein the raw material containing silver and titanium is a conductive composite containing silver, titanium or titanium dioxide, and carbon. A method for producing titanium fine particles.
およびチタンの合計に対する銀のモル比は、３〜４０モ
ル％とする請求項１または２記載の銀微粒子を複合した
二酸化チタン微粒子の製造方法。3. The titanium dioxide fine particles combined with silver fine particles according to claim 1 or 2, wherein the silver and titanium-containing raw material has a molar ratio of silver to the total of silver and titanium of 3 to 40 mol%. Production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000081551A JP2001261337A (en) | 2000-03-23 | 2000-03-23 | Method of producing titanium dioxide microparticle compounded with silver microparticle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000081551A JP2001261337A (en) | 2000-03-23 | 2000-03-23 | Method of producing titanium dioxide microparticle compounded with silver microparticle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001261337A true JP2001261337A (en) | 2001-09-26 |
Family
ID=18598470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000081551A Pending JP2001261337A (en) | 2000-03-23 | 2000-03-23 | Method of producing titanium dioxide microparticle compounded with silver microparticle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001261337A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012146436A1 (en) * | 2011-04-28 | 2012-11-01 | Basf Se | Noble metal catalysts having low metal charge for oxidative dehydrations |
| JP2014040416A (en) * | 2012-08-10 | 2014-03-06 | Tsukasa Sakurada | Sterilization and deodorization agent, production method of the same, and application method of the agent |
| CN106283099A (en) * | 2016-08-25 | 2017-01-04 | 岭南师范学院 | A kind of surfactant assist in electrodeposition synthesizing anatase type titanium dioxide and the method for manganese dioxide nano-composite material and application thereof |
| CN106362584A (en) * | 2016-08-25 | 2017-02-01 | 杭州利纯环保科技有限公司 | Nano photo-catalyst air deodorant and preparation method of same |
-
2000
- 2000-03-23 JP JP2000081551A patent/JP2001261337A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012146436A1 (en) * | 2011-04-28 | 2012-11-01 | Basf Se | Noble metal catalysts having low metal charge for oxidative dehydrations |
| JP2014516770A (en) * | 2011-04-28 | 2014-07-17 | ビーエーエスエフ ソシエタス・ヨーロピア | Precious metal catalysts for oxidative dehydrogenation with low metal loading |
| JP2014040416A (en) * | 2012-08-10 | 2014-03-06 | Tsukasa Sakurada | Sterilization and deodorization agent, production method of the same, and application method of the agent |
| JP2016199560A (en) * | 2012-08-10 | 2016-12-01 | 株式会社信州セラミックス | Fungicide, material and product thereof, and manufacturing method and usage thereof |
| JP2018043993A (en) * | 2012-08-10 | 2018-03-22 | 株式会社信州セラミックス | Agent, material and product thereof, and equipment thereof |
| CN106283099A (en) * | 2016-08-25 | 2017-01-04 | 岭南师范学院 | A kind of surfactant assist in electrodeposition synthesizing anatase type titanium dioxide and the method for manganese dioxide nano-composite material and application thereof |
| CN106362584A (en) * | 2016-08-25 | 2017-02-01 | 杭州利纯环保科技有限公司 | Nano photo-catalyst air deodorant and preparation method of same |
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