JP2001096276A - Electrolytic device of water - Google Patents
Electrolytic device of waterInfo
- Publication number
- JP2001096276A JP2001096276A JP27710099A JP27710099A JP2001096276A JP 2001096276 A JP2001096276 A JP 2001096276A JP 27710099 A JP27710099 A JP 27710099A JP 27710099 A JP27710099 A JP 27710099A JP 2001096276 A JP2001096276 A JP 2001096276A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- water
- srtio
- photocatalytic
- semiconductor
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Landscapes
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は水の電気分解装置、
浄化装置の技術分野に属する。The present invention relates to a water electrolysis apparatus,
It belongs to the technical field of purification equipment.
【０００２】[0002]
【従来の技術】従来、時世代のエネルギー源としても期
待される水素は、水の電気分解で得られている。この水
の電気分解は水酸化ナトリウム等を水に溶かし導電性を
持たせて行われている。この際、電極は白金等通常の金
属を用いることが多い。2. Description of the Related Art Conventionally, hydrogen, which is also expected as an energy source of a time generation, has been obtained by electrolysis of water. This electrolysis of water is carried out by dissolving sodium hydroxide or the like in water to impart conductivity. At this time, the electrode is often made of a normal metal such as platinum.
【０００３】一方、水の浄化は薬品処理、微生物を用い
た有機物の分解、などが行われている。On the other hand, water purification includes chemical treatment, decomposition of organic substances using microorganisms, and the like.
【０００４】[0004]
【発明が解決しようとする課題】従来の、水の電気分解
装置は、液体の流出が起きた際に、アルカリが環境に影
響を及ぼすという問題を含んでいる。The conventional water electrolyzer involves the problem that alkalis affect the environment when a liquid leaks out.
【０００５】また、水の浄化に用いられる薬品は通常に
於いて劇物である。また微生物利用においても、生態系
を乱したり、危険な種の発生の可能性がある。[0005] The chemicals used for water purification are usually deleterious. The use of microorganisms can also disrupt ecosystems and create dangerous species.
【０００６】更に、これらの装置は悪臭の発生を伴う場
合がある。[0006] Further, these devices may be accompanied by generation of offensive odor.
【０００７】光触媒電極に於いては、光触媒電極自らが
酸化され、電極として劣化する問題が生ずる。In the photocatalyst electrode, there is a problem that the photocatalyst electrode itself is oxidized and deteriorates as an electrode.
【０００８】本発明では、光触媒性を持つ材料を電気分
解の電極に用いることで、水にアルカリなどのものを溶
解させずに電気分解を行うものである。In the present invention, electrolysis is performed without dissolving an alkali or the like in water by using a photocatalytic material for the electrode for electrolysis.
【０００９】また、本発明では光触媒の強い酸化性を利
用し水中の有機物を酸化分解し、水の浄化を行うもので
ある。Further, in the present invention, water is purified by oxidatively decomposing organic substances in water by utilizing the strong oxidizing property of the photocatalyst.
【００１０】本発明では、光触媒電極が自ら強い酸化状
態に置かれることから、酸化物を用いることで光触媒電
極の劣化を防止するものである。In the present invention, since the photocatalyst electrode is placed in a strong oxidation state by itself, deterioration of the photocatalyst electrode is prevented by using an oxide.
【００１１】[0011]
【課題を解決するための手段】請求項１にかかる発明
は、耐酸化性を有し、且つ、光触媒性を持つTiO2を含む
化合物を水の電気分解の電極として用いることを特徴と
する水の電気分解装置である。The invention according to claim 1 is characterized in that a compound containing TiO 2 having oxidation resistance and photocatalytic properties is used as an electrode for electrolysis of water. Of the electrolyzer.
【００１２】請求項２にかかる発明は、上記TiO2を含む
化合物を電極として用いる水の電気分解装置において、
紫外光を透過する窓と、水を入れる容器と、上記TiO2を
含む化合物電極に通電するための電極と上記電極より発
生する気体を収集する容器をもち、上記電極に光を照射
する光源とを有することを特徴とする。According to a second aspect of the present invention, there is provided a water electrolysis apparatus using the compound containing TiO 2 as an electrode,
A window that transmits ultraviolet light, a container for water, and an electrode for energizing the compound electrode containing TiO 2 and a container for collecting gas generated from the electrode, and a light source for irradiating the electrode with light. It is characterized by having.
【００１３】請求項３にかかる発明は、上記水の電気分
解装置において、電極として半導体化したSrTiO3を光触
媒電極として用いることを特徴とする。[0013] The invention according to claim 3 is characterized in that in the above-mentioned water electrolyzer, SrTiO 3 made into a semiconductor is used as a photocatalytic electrode as an electrode.
【００１４】請求項４にかかる発明は、上記SrTiO3の半
導体化の為にSrTiO3にLa、又はNbをドーピング、若く
は、酸素欠損を導入したSrTiO3を光触媒電極として用い
ることを特徴とする。The invention according to claim 4 is characterized in that SrTiO 3 is doped with La or Nb and SrTiO 3 into which oxygen deficiency is introduced is used as a photocatalytic electrode in order to convert the SrTiO 3 into a semiconductor. .
【００１５】請求項５にかかる発明は、水素発生用の電
極として水素化電圧の低い白金を用いることを特徴とす
る。The invention according to claim 5 is characterized in that platinum having a low hydrogenation voltage is used as an electrode for hydrogen generation.
【００１６】請求項６にかかる発明は、光触媒性を持つ
TiO2を含む化合物の強い酸化触媒性を利用し、溶液中の
有機物を酸化分解する、ことを特徴とする。The invention according to claim 6 has photocatalytic properties.
Utilizing the strong oxidation catalytic properties of the compound containing TiO 2 , the organic matter in the solution is oxidatively decomposed.
【００１７】請求項７にかかる発明は、上記TiO2を含む
化合物を電極として用いる水の浄化装置において、紫外
光を透過する窓と、水を入れる容器と、上記TiO2を含む
化合物電極に通電するための電極と、上記電極より発生
する気体を収集する容器と、上記電極に光を照射する光
源とを有することを特徴とする。According to a seventh aspect of the present invention, there is provided a water purification apparatus using the compound containing TiO 2 as an electrode, wherein a window for transmitting ultraviolet light, a container for containing water, and an electric current are supplied to the compound electrode containing TiO 2. And a light source for irradiating the electrodes with light, a container for collecting gas generated from the electrodes, and a light source for irradiating the electrodes with light.
【００１８】請求項８にかかる発明は、電極として半導
体化したSrTiO3を光触媒電極として用いることを特徴と
する。The invention according to claim 8 is characterized in that SrTiO 3 made into a semiconductor is used as a photocatalytic electrode as an electrode.
【００１９】請求項９にかかる発明は、上記SrTiO3の半
導体化の為にSrTiO3にLa、又はNbをドーピング、若く
は、酸素欠損を導入したSrTiO3を光触媒電極として用い
ることを特徴とする。The invention according to claim 9 is characterized in that SrTiO 3 is doped with La or Nb and SrTiO 3 into which oxygen vacancy is introduced is used as a photocatalytic electrode in order to convert the SrTiO 3 into a semiconductor. .
【００２０】請求項１０にかかる発明は、水素発生用の
電極として水素化電圧の低い白金を用いることを特徴と
する。The invention according to claim 10 is characterized in that platinum having a low hydrogenation voltage is used as an electrode for hydrogen generation.
【００２１】請求項１１にかかる発明は、水素化電圧の
低い白金と、酸素発生電極に酸化による劣化がなく、し
かも光触媒性を持つTiO2を含む化合物を電極として用い
ることを特徴とする。An eleventh aspect of the present invention is characterized in that platinum having a low hydrogenation voltage and a compound containing TiO 2 which has no deterioration due to oxidation and has photocatalytic properties are used as the electrode.
【００２２】[0022]
【発明の実施の形態】本発明の実施の形態を図１を用い
て示す。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG.
【００２３】容器１には、紫外光を透化する窓２を形成
してある。容器１の内部には酸素発生電極としてのSrTi
O3電極３と、水素発生電極としての白金電極４を持つ。The container 1 is provided with a window 2 for transmitting ultraviolet light. Inside the container 1, SrTi as an oxygen generating electrode
It has an O 3 electrode 3 and a platinum electrode 4 as a hydrogen generating electrode.
【００２４】これらの電極は電源５に電気的に接続され
ている。These electrodes are electrically connected to a power supply 5.
【００２５】各電極には気体採集器６が取り付けられて
いる。A gas collector 6 is attached to each electrode.
【００２６】本装置は容器１に水７を満たし、SrTiO3電
極３と、白金電極４が水７に浸る状態にする。窓２から
紫外光８をSrTiO3電極３に当てながら、電源５を用いて
電流を流す。In this apparatus, the container 1 is filled with water 7 and the SrTiO 3 electrode 3 and the platinum electrode 4 are immersed in the water 7. While applying ultraviolet light 8 from the window 2 to the SrTiO 3 electrode 3, a current is supplied using the power supply 5.
【００２７】この結果、 SrTiO3が持つ強い光触媒能力
によって電気分解が行われ、電極から発生した酸素９、
水素１０は気体採集器６にて収集される。As a result, electrolysis is performed by the strong photocatalytic ability of SrTiO 3 , and oxygen 9 generated from the electrode
Hydrogen 10 is collected by gas collector 6.
【００２８】酸素発生電極３として用いるSrTiO3はLa又
はNbのドープ、又は還元処理による酸素欠損の導入など
を行うことにより、キャリアをドープし、半導体化した
ものを用いる。The SrTiO 3 used as the oxygen generating electrode 3 is obtained by doping with La or Nb, or introducing oxygen deficiency by a reduction treatment, or the like, so that the carrier is doped and made into a semiconductor.
【００２９】ここで、本発明に用いる電極を製造する方
法を簡単に説明する。ここでは、 LaをドープしたSrTiO
3の製造方法を述べる。Here, a method of manufacturing an electrode used in the present invention will be briefly described. Here, La-doped SrTiO
Manufacturing method 3 will be described.
【００３０】SrTiO3はSrO、TiO2、La2O3を（Sr+La）:Ti
が1:1になるように計量混合し、原料をプレス整形した
後、空気中で1200〜1300℃にて焼結し作成する。SrTiO 3 converts SrO, TiO 2 and La 2 O 3 into (Sr + La): Ti
Is measured and mixed so that the ratio becomes 1: 1. The raw material is press-formed, and then sintered at 1200 to 1300 ° C. in the air.
【００３１】又は、この後焼結した材料を再び粉砕混
合、プレス整形を行い１回目より高い温度にて焼結して
作成する。SrTiO3は、焼結体だけでなく単結晶体を用い
ても構わない。Alternatively, the sintered material is again pulverized, mixed and press-shaped, and sintered at a temperature higher than the first time. SrTiO 3 may be used not only in a sintered body but also in a single crystal body.
【００３２】作成したSrTiO3を板状に加工し、オーミッ
ク接合となるアルミニウムなどの金属で電極を付けアル
ミ電極から導線を付ける。The produced SrTiO 3 is processed into a plate shape, and an electrode is formed with a metal such as aluminum which forms an ohmic junction, and a conductive wire is formed from the aluminum electrode.
【００３３】本発明の実施例では対向電極に白金板を用
いた。In the embodiment of the present invention, a platinum plate is used for the counter electrode.
【００３４】本発明におけるLaをドープしたSrTiO3で
は、LaをSrに置換して導入するためTiを置換するNbの様
に光触媒性を持つTiO2面に乱雑性を与えない。従って、
NbよりもLaが望ましいが、Nbをもちいても、同様の効果
が得られる。The La-doped SrTiO 3 according to the present invention does not impart randomness to the photocatalytic TiO 2 surface like Nb replacing Ti because La is replaced by Sr and introduced. Therefore,
La is preferable to Nb, but the same effect can be obtained by using Nb.
【００３５】一方、紫外線８は紫外線ランプを用いるの
が望ましいが、蛍光灯の弱い紫外線、太陽光の紫外線で
も構わない。On the other hand, it is desirable to use an ultraviolet lamp as the ultraviolet light 8, but it is also possible to use weak ultraviolet light of a fluorescent lamp or ultraviolet light of sunlight.
【００３６】[0036]
【発明の効果】本発明の、水の電気分解装置は、液体の
流出が起きた際に、環境に影響を及すことがない。また
本発明の、水の浄化では劇物を用いない。また本発明に
おいては、生態系を乱したり、危険な種の発生の可能性
はない。また、本発明の装置は悪臭の発生が生じない。The water electrolyzer of the present invention does not affect the environment when a liquid leaks out. In the present invention, no harmful substances are used in water purification. Also, in the present invention, there is no possibility of disrupting the ecosystem or generating dangerous species. Further, the device of the present invention does not generate odor.
【００３７】本発明の光触媒電極に於いては、光触媒電
極自らが酸化されることがなく、電極の劣化が生じな
い。In the photocatalyst electrode of the present invention, the photocatalyst electrode itself is not oxidized and the electrode does not deteriorate.
【００３８】本発明は上記環境問題を技術的に同一のも
ので処理する方法を与えるものである。The present invention provides a method for dealing with the above environmental problems with the same technology.
【図１】本発明に置ける、水の電気分解装置の概略図で
ある。FIG. 1 is a schematic view of a water electrolysis apparatus according to the present invention.
１：容器 ２：窓 ３：SrTiO3電極 ４：白金電極 ５：電源 ６：気体採集器 ７：水 ８：紫外光 ９：酸素 １０：水素1: container 2: window 3: SrTiO 3 electrode 4: platinum electrode 5: power supply 6: gas collector 7: water 8: ultraviolet light 9: oxygen 10: hydrogen
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4D037 AA01 AA08 AA11 AB01 AB02 BA18 CA04 4D050 AA01 AA08 AA12 AB07 AB11 BB01 BC04 BC09 CA07 CA10 4D061 DA01 DA05 DA08 DB15 DB18 DC06 DC08 EA03 EA04 EB30 EB31 ED17 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4D037 AA01 AA08 AA11 AB01 AB02 BA18 CA04 4D050 AA01 AA08 AA12 AB07 AB11 BB01 BC04 BC09 CA07 CA10 4D061 DA01 DA05 DA08 DB15 DB18 DC06 DC08 EA03 EA04 EB30 EB31 ED17
Claims (11)
TiO2を含む化合物を、水を電気分解する際の電極として
用いることを特徴とする水の電気分解装置。1. It has oxidation resistance and photocatalytic properties.
An electrolyzer for water, wherein a compound containing TiO 2 is used as an electrode for electrolyzing water.
る水の電気分解装置において、 紫外光を透過する窓と、 水を入れる容器と、 上記TiO2を含む化合物電極に通電するための電極と、 上記電極より発生する気体を収集する容器と、 上記電極に光を照射する光源とを有することを特徴とす
る請求項１記載の水の電気分解装置。2. An electrolyzer for water using the compound containing TiO 2 as an electrode, a window for transmitting ultraviolet light, a container for water, and an electrode for supplying electricity to the compound electrode containing TiO 2. The water electrolysis apparatus according to claim 1, further comprising: a container for collecting gas generated from the electrode; and a light source for irradiating the electrode with light.
して半導体化したSrTiO3を光触媒電極として用いること
を特徴とする請求項２記載の水の電気分解装置。3. The water electrolysis apparatus according to claim 2, wherein in the water electrolysis apparatus, SrTiO 3 converted into a semiconductor is used as an electrode as a photocatalytic electrode.
a、又はNbをドーピング、若くは、酸素欠損を導入したS
rTiO3を光触媒電極として用いることを特徴とする請求
項２記載の水の電気分解装置。4. To convert SrTiO 3 into a semiconductor, L is added to SrTiO 3 .
a or Nb-doped, or S introduced with oxygen deficiency
3. The water electrolysis apparatus according to claim 2, wherein rTiO 3 is used as a photocatalytic electrode.
い白金を用いることを特徴とする請求項２記載の水の電
気分解装置。5. The water electrolysis apparatus according to claim 2, wherein platinum having a low hydrogenation voltage is used as an electrode for generating hydrogen.
酸化触媒性を利用し、溶液中の有機物を酸化分解するこ
とを特徴とする水の浄化装置。6. An apparatus for purifying water, wherein an organic substance in a solution is oxidatively decomposed by utilizing a strong oxidation catalytic property of a compound containing TiO 2 having photocatalytic property.
る水の浄化装置において、 紫外光を透過する窓と、 水を入れる容器と、 上記TiO2を含む化合物電極に通電するための電極と、 上記電極より発生する気体を収集する容器と、 上記電極に光を照射する光源と、 を有することを特徴とする請求項６記載の水の浄化装
置。7. A water purifier using the compound containing TiO 2 as an electrode, a window for transmitting ultraviolet light, a container for water, and an electrode for supplying electricity to the compound electrode containing TiO 2 , The water purification device according to claim 6, further comprising: a container for collecting gas generated from the electrode; and a light source for irradiating the electrode with light.
電極として用いることを特徴とする請求項７記載の水の
浄化装置。8. The water purification apparatus according to claim 7, wherein SrTiO 3 made into a semiconductor is used as an electrode as a photocatalytic electrode.
a、又はNbをドーピング、若くは、酸素欠損を導入したS
rTiO3を光触媒電極として用いることを特徴とする請求
項８記載の水の浄化装置。9. In order to convert SrTiO 3 into a semiconductor, L is added to SrTiO 3 .
a or Nb-doped, or S introduced with oxygen deficiency
water purification device according to claim 8, wherein the use of RTiO 3 as a photocatalyst electrode.
低い白金を用いることを特徴とする請求項７記載の水の
浄化装置。10. The water purification apparatus according to claim 7, wherein platinum having a low hydrogenation voltage is used as an electrode for generating hydrogen.
極に酸化による劣化がなく、しかも光触媒性を持つTiO2
を含む化合物を電極として用いることを特徴とする、水
の分解を伴う半導体光電池。11. Platinum having a low hydrogenation voltage and TiO 2 which has no deterioration due to oxidation of the oxygen generating electrode and has photocatalytic properties.
A semiconductor photovoltaic cell with water decomposition, characterized in that a compound containing: is used as an electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27710099A JP2001096276A (en) | 1999-09-29 | 1999-09-29 | Electrolytic device of water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27710099A JP2001096276A (en) | 1999-09-29 | 1999-09-29 | Electrolytic device of water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001096276A true JP2001096276A (en) | 2001-04-10 |
Family
ID=17578787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27710099A Pending JP2001096276A (en) | 1999-09-29 | 1999-09-29 | Electrolytic device of water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001096276A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008302328A (en) * | 2007-06-08 | 2008-12-18 | National Univ Corp Shizuoka Univ | Method for manufacturing titanium oxide film-formed member, photocatalyst, photoelectrode, and water treatment apparatus |
| JP2010194472A (en) * | 2009-02-26 | 2010-09-09 | Institute Of Biophotochemonics Co Ltd | Biophotochemical cell optically decomposing/cleaning biomass, organic/inorganic compound or waste/waste fluid with high efficiency and simultaneously generating electric power, and method of optically decomposing/cleaning such compound and fluid using biophotochemical cell and simultaneously generating electric power |
| JP2011120967A (en) * | 2009-12-08 | 2011-06-23 | Japan Organo Co Ltd | Apparatus and method for decomposing organic substance in pure water |
| JP5691023B1 (en) * | 2014-02-15 | 2015-04-01 | 株式会社勝電技研 | Hydrogen water production equipment |
| WO2015079594A1 (en) * | 2013-11-29 | 2015-06-04 | 鈴木 健治 | Hydrogen water production apparatus, and electrode for use in same |
-
1999
- 1999-09-29 JP JP27710099A patent/JP2001096276A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008302328A (en) * | 2007-06-08 | 2008-12-18 | National Univ Corp Shizuoka Univ | Method for manufacturing titanium oxide film-formed member, photocatalyst, photoelectrode, and water treatment apparatus |
| JP2010194472A (en) * | 2009-02-26 | 2010-09-09 | Institute Of Biophotochemonics Co Ltd | Biophotochemical cell optically decomposing/cleaning biomass, organic/inorganic compound or waste/waste fluid with high efficiency and simultaneously generating electric power, and method of optically decomposing/cleaning such compound and fluid using biophotochemical cell and simultaneously generating electric power |
| JP2011120967A (en) * | 2009-12-08 | 2011-06-23 | Japan Organo Co Ltd | Apparatus and method for decomposing organic substance in pure water |
| WO2015079594A1 (en) * | 2013-11-29 | 2015-06-04 | 鈴木 健治 | Hydrogen water production apparatus, and electrode for use in same |
| JP2015104690A (en) * | 2013-11-29 | 2015-06-08 | 株式会社インテクトプランニング | Device for producing hydrogen water, and electrode used therefor |
| JP5691023B1 (en) * | 2014-02-15 | 2015-04-01 | 株式会社勝電技研 | Hydrogen water production equipment |
| JP2015150512A (en) * | 2014-02-15 | 2015-08-24 | 株式会社勝電技研 | Hydrogen water production apparatus |
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