JPH10290017A - Optical catalyzer - Google Patents
Optical catalyzerInfo
- Publication number
- JPH10290017A JPH10290017A JP9095519A JP9551997A JPH10290017A JP H10290017 A JPH10290017 A JP H10290017A JP 9095519 A JP9095519 A JP 9095519A JP 9551997 A JP9551997 A JP 9551997A JP H10290017 A JPH10290017 A JP H10290017A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- photocatalyst
- thin film
- tio2
- solar cell
- 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.)
- Withdrawn
Links
- 230000003287 optical effect Effects 0.000 title 1
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- 239000010409 thin film Substances 0.000 claims abstract description 18
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 7
- 230000005611 electricity Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000003054 catalyst Substances 0.000 claims description 21
- 239000011941 photocatalyst Substances 0.000 claims description 21
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 19
- 229910006404 SnO 2 Inorganic materials 0.000 claims description 12
- 239000004065 semiconductor Substances 0.000 claims description 10
- 239000012212 insulator Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 7
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- 239000010411 electrocatalyst Substances 0.000 claims 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 abstract description 9
- 238000000354 decomposition reaction Methods 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 239000010408 film Substances 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 abstract description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 10
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 abstract 8
- 239000012190 activator Substances 0.000 abstract 1
- 238000010030 laminating Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 8
- 239000004094 surface-active agent Substances 0.000 description 8
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 5
- 229910052753 mercury Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000001699 photocatalysis Effects 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 241001619348 Idris Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/546—Polycrystalline silicon PV cells
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、光触媒に関する。
例えば、洗浄、印刷、その他の廃液中の、界面活性剤、
色素などの有害物の分解、水分解による水素発生、大気
中の汚染物質（ＮＯxなど）の分解、脱臭又は水中の有
機物などの分解による水質浄化などに利用できるもので
ある。The present invention relates to a photocatalyst.
For example, surfactants in washing, printing, and other waste liquids,
Decomposition of harmful substances, such as dyes, hydrogen generation by water decomposition, the decomposition of pollutants in the atmosphere (NO x etc.), those available such as water purification by decomposition of deodorizing or organic matter in water.
【０００２】[0002]
【従来の技術】廃液中の界面活性剤などの有害物は、主
に、微生物により分解されている。一部は光触媒等での
分解も試みられている。その際、光触媒としてＴiＯ2が
広く用いられており、脱硝、脱臭、界面活性剤や有機物
などの水質汚染物質の分解などの性能を持つことは知ら
れている。2. Description of the Related Art Harmful substances such as surfactants in waste liquids are mainly decomposed by microorganisms. Some attempts have been made to decompose it with a photocatalyst or the like. At that time, TiO 2 is widely used as a photocatalyst, and is known to have performances such as denitration, deodorization, and decomposition of water pollutants such as surfactants and organic substances.
【０００３】[0003]
【発明が解決しようとする課題】微生物処理では高濃度
の界面活性剤を処理できない。また、生分解性の悪い界
面活性剤の分解は困難であり、分解性の良いものでも無
機物への完全な分解は行われておらず、ベンゼン環など
の構造は分解できていないことが多い。従って、他の方
法を検討する必要がある。ＴiＯ2などの光触媒を用いる
方法では、太陽光で利用する場合、紫外線しでか利用で
きず効率が低いなどの問題があり、より効率の高い光触
媒の開発が必要である。SUMMARY OF THE INVENTION Microbial treatment cannot treat high concentrations of surfactants. In addition, it is difficult to decompose a surfactant having poor biodegradability, and even a substance having good decomposability has not been completely decomposed into inorganic substances, and the structure such as a benzene ring has often not been decomposed. Therefore, other methods need to be considered. In the method using a photocatalyst such as TiO 2, when utilized in sunlight, there are problems such as low efficiency not available Deka ultraviolet, it is necessary to develop a more efficient photocatalyst.
【０００４】一方、ＳnＯ2とＴiＯ2の接合構造を持つ触
媒を電極に用いて、光電気化学反応による色素などの化
合物を高効率で分解する手法が報告されている（Idriss
Bedja, and Prashant V. Kamat, J. Phys. Chem. 99(1
995)9182-9188 ）。On the other hand, there has been reported a method of decomposing a compound such as a dye by a photoelectrochemical reaction with high efficiency using a catalyst having a junction structure of SnO 2 and TiO 2 for an electrode (Idriss).
Bedja, and Prashant V. Kamat, J. Phys. Chem. 99 (1
995) 9182-9188).
【０００５】ここで、太陽電池表面の透明電極としてＳ
nＯ2が使用されているが、ＳnＯ2の触媒としてよく用い
られるＴiＯ2と結晶構造は同じであり、格子定数なども
大きくは違わないので両者の接合構造の形成や、ＳnＯ2
のＴiＯ2での置換、また、その逆は容易に行える。Here, S is used as a transparent electrode on the surface of the solar cell.
nO 2 but is used, the crystal structure and TiO 2 which is often used as the SnO 2 catalyst are the same, the formation of the joint structure of the two and so does not differ greatly well as lattice constant, SnO 2
Can be easily replaced with TiO 2 and vice versa.
【０００６】[0006]
【課題を解決するための手段】そこで、本発明は、太陽
電池の表面に透明電極を形成する代わりに、ＴiＯ2で被
覆し、その上をＳnＯ2で被覆し、さらにその上をＴiＯ2
で被覆して、接合構造を持つ電極触媒を形成し、太陽電
池と電極触媒を組み合わせた光触媒を作成したものであ
る。Therefore, in the present invention, instead of forming a transparent electrode on the surface of a solar cell, it is coated with TiO 2 , coated with SnO 2 , and further coated with TiO 2.
To form an electrode catalyst having a bonding structure, and to produce a photocatalyst combining a solar cell and an electrode catalyst.
【０００７】〔作用〕この光触媒に光を照射すると、太
陽電池の起電力と電極触媒の光触媒作用で、表面上で有
害物の分解などの化学反応を発生させることができる。
この反応を利用すれば、光を照射する他は動力を必要と
せずに界面活性剤の分解処理などが可能になる。尚、太
陽電池とは、シリコンなどの半導体のｐ型とｎ型を接合
したもの、または、ｐ型とｎ型の間に絶縁体層をはさん
だもので、光により起電力を生じる装置をいう。[Operation] When light is irradiated to this photocatalyst, a chemical reaction such as decomposition of harmful substances can be generated on the surface by the electromotive force of the solar cell and the photocatalysis of the electrode catalyst.
If this reaction is utilized, it becomes possible to decompose the surfactant without using any power except for irradiating light. Note that a solar cell is a device in which a p-type and n-type semiconductor such as silicon are joined or an insulator layer is interposed between the p-type and n-type, and an electromotive force is generated by light. .
【０００８】[0008]
〔実施例１〕本発明の一実施例に係る光触媒である光電
気化学反応装置を図１に示す。同図に示すように、本実
施例の光電気化学反応装置は、太陽電池の表面に電極の
代わりに電極触媒を形成したものである。Embodiment 1 FIG. 1 shows a photoelectrochemical reaction apparatus which is a photocatalyst according to one embodiment of the present invention. As shown in the figure, the photoelectrochemical reaction device of the present example has an electrode catalyst formed on the surface of a solar cell instead of an electrode.
【０００９】即ち、基板１上に、白金電極２、ｎ型多結
晶シリコン（２００ｎｍ）３、多結晶シリコン絶縁層
（１．２μｍ）４及びｐ型多結晶シリコン（２００ｎ
ｍ）５を形成し、更に、ＴiＯ2（３ｎｍ）６、ＳnＯ
2（５ｎｍ）７及びＴiＯ2（３ｎｍ）８よりなる電極触
媒を形成したものである。That is, on a substrate 1, a platinum electrode 2, an n-type polycrystalline silicon (200 nm) 3, a polycrystalline silicon insulating layer (1.2 μm) 4, and a p-type polycrystalline silicon (200n)
m) 5 and then TiO 2 (3 nm) 6 and SnO
An electrode catalyst consisting of 2 (5 nm) 7 and TiO 2 (3 nm) 8 was formed.
【００１０】但し、図１中の装置の構成は一例であり、
構造、サイズなどはこれに限るものではない。例えば、
電極触媒として、二種類以上の金属同士、半導体同士、
金属と半導体、金属と絶縁体、半導体と絶縁体などを積
み重ねた構造とすることができる。また、電極触媒は、
ＴiＯ2とＳnＯ2の薄膜を積み重ねた構造を持つこと、或
いは、ＳnＯ2の薄膜をＴiＯ2の薄膜で挟んだこと、また
は、ＴiＯ2の薄膜をＳnＯ2の薄膜を交互に３層以上積層
して構成することができる。However, the configuration of the device in FIG. 1 is an example,
The structure and size are not limited to these. For example,
As an electrode catalyst, two or more kinds of metals, semiconductors,
A structure in which a metal and a semiconductor, a metal and an insulator, a semiconductor and an insulator, and the like are stacked can be employed. Also, the electrode catalyst
It has a structure in which TiO 2 and SnO 2 thin films are stacked, or a SnO 2 thin film is sandwiched between TiO 2 thin films, or a TiO 2 thin film is formed by alternately stacking three or more SnO 2 thin films. Can be configured.
【００１１】上述した構造を有する光電気化学反応装置
を、図２に示すように、水槽９内に配置して、廃水を処
理を行うのためのセルを形成した。水槽９内には、白金
などの対極を挿入し、電極触媒と対極の間に太陽電池に
よる電気を通し、同時に光を照射して溶液反応を起こす
ようにしている。As shown in FIG. 2, the photoelectrochemical reactor having the above-mentioned structure was disposed in a water tank 9 to form a cell for treating wastewater. A counter electrode made of platinum or the like is inserted into the water tank 9, electricity is supplied from a solar cell between the electrode catalyst and the counter electrode, and light is simultaneously irradiated to cause a solution reaction.
【００１２】このセルに界面活性剤ドデシルベンゼンス
ルホン酸ナトリウム（以下、ＳＤＳ）の１．１％水溶液
を注入し、太陽光を当てて１時間放置した後、残留して
いるＳＤＳを測定したところ０．１％以下になってお
り、ほぼ完全に分解できた。ＳＤＳ濃度は波長２７５ｎ
ｍのベンゼン環の紫外線の吸収量を測定して求めた。A 1.1% aqueous solution of a surfactant, sodium dodecylbenzenesulfonate (hereinafter referred to as SDS) was injected into the cell, left for 1 hour under sunlight, and the remaining SDS was measured. 0.1% or less, and it could be almost completely decomposed. SDS concentration is 275n wavelength
m was determined by measuring the amount of ultraviolet light absorbed by the benzene ring.
【００１３】比較例として、絶縁体Ｓiの上にＴiＯ2膜
を３ｎｍ積層したものを使って、同様にＳＤＳ１．１％
水溶液の太陽光による分解を行ったところ、１時間後に
０．４％のＳＤＳが残留しており、時間が経過してもそ
れ以上反応は進行しなかった。As a comparative example, a 3 nm thick TiO 2 film was laminated on an insulator Si.
When the aqueous solution was decomposed by sunlight, 0.4% of SDS remained after 1 hour, and the reaction did not proceed any further even after the elapse of time.
【００１４】〔実施例２〕本発明の第２実施例に係る光
触媒である光電気化学反応装置を図３に、その脱硝性能
確認のための実験装置を図４に示す。本実施例は、図３
に示すように、トンネル内の照明として用いられている
水銀灯、ナトリウムランプ、蛍光灯等１０の近くに、図
１の光電気化学反応装置１１を設置したものである。Embodiment 2 FIG. 3 shows a photoelectrochemical reaction apparatus as a photocatalyst according to a second embodiment of the present invention, and FIG. 4 shows an experimental apparatus for confirming the denitration performance. In the present embodiment, FIG.
As shown in FIG. 1, a photoelectrochemical reactor 11 of FIG. 1 is installed near a mercury lamp, a sodium lamp, a fluorescent lamp, or the like 10 used as illumination in a tunnel.
【００１５】道路のトンネル中の空気は自動車などの排
ガスにより、ＮＯxの濃度が高いことが問題になってい
るが、ボイラーなどと比較すると濃度が低く拡散してい
る為有効な打ち手がなかった。第１図に示した光電気化
学反応装置は、光触媒の電子状態を電圧を加えて制御し
触媒活性を向上させるもので、必ずしも電流を伴う電気
化学反応を必要としない。従って、空気中でも、脱硝、
脱臭などの為に使用することが可能である。[0015] The exhaust gas of air in road tunnels automobiles, but higher concentrations of the NO x is at issue, there is no such comparison and hand valid hit for concentration is diffused low boilers Was. The photoelectrochemical reaction device shown in FIG. 1 controls the electronic state of the photocatalyst by applying a voltage to improve the catalytic activity, and does not necessarily require an electrochemical reaction involving a current. Therefore, even in the air, denitration,
It can be used for deodorization.
【００１６】そこで、本実施例では、図３に示すよう
に、蛍光灯等１０の近くに、光電気化学反応装置１１を
設置することにより、トンネル内空気の脱硝を行うよう
にしたものである。本実施例における脱硝性能を評価す
るために、図４に示すように、密閉型のガラス容器（内
容積２５０ｍｌ）１２の内部に光電気化学反応装置１３
を設置し、ＮＯ2濃度９８ｐｐｍの空気を封入して、水
銀灯１４を照射してＮＯ2濃度の経時変化を調べた。Therefore, in the present embodiment, as shown in FIG. 3, a photoelectrochemical reaction device 11 is installed near a fluorescent lamp or the like 10 to denitrate the air in the tunnel. . In order to evaluate the denitration performance in this example, as shown in FIG. 4, a photoelectrochemical reaction device 13 was placed inside a closed glass container (internal volume 250 ml) 12.
Was installed, air with a NO 2 concentration of 98 ppm was sealed, and irradiation with a mercury lamp 14 was performed to examine the change over time in the NO 2 concentration.
【００１７】上記の実験において、水銀灯１４の照射を
開始して１時間経過後のＮＯ2濃度を測定したところ４
３ｐｐｍに減少した。これより、本実施例の装置が脱硝
性能を持っていることが分かった。In the above experiment, the NO 2 concentration was measured one hour after the irradiation of the mercury lamp 14 was started.
Reduced to 3 ppm. From this, it was found that the apparatus of the present example had the denitration performance.
【００１８】比較例として、絶縁体Ｓiの上にＴiＯ2膜
を３ｎｍ積層したものを使って、同様な試験を行った。
ＮＯ2濃度９８ｐｐｍの空気を封入し、光を１時間照射
した後のＮＯ2濃度は５１ｐｐｍで本実施例による装置
の方が効率が高かった。As a comparative example, a similar test was performed using a TiO 2 film having a thickness of 3 nm laminated on an insulator Si.
The air according to the present example was higher in efficiency than the device according to the present example, in which air having a NO 2 concentration of 98 ppm was sealed and irradiated with light for 1 hour, and the NO 2 concentration was 51 ppm.
【００１９】[0019]
【発明の効果】以上、実施例に基づいて具体的に説明し
たように、本願の請求項１の発明に係る光触媒によれ
ば、太陽電池の表面に透明電極の代わりに電極触媒を形
成し、電極触媒表面で光と電気の同時作用により化学反
応を起こし、また、本願の請求項２，３，４に係る発明
の光触媒では、請求項１において、前記電極触媒とし
て、二種類以上の金属同士、半導体同士、金属と半導
体、金属と絶縁体、半導体と絶縁体などを積み重ねた構
造或いはＴiＯ2とＳnＯ2の薄膜を積み重ねた構造、Ｓn
Ｏ2の薄膜をＴiＯ2の薄膜で挟んだ構造又はＴiＯ2の薄
膜とＳnＯ2の薄膜とを交互に３層以上積層した構造を持
つため、本発明の光触媒に光を照射すると、太陽電池の
起電力と電極触媒の光触媒作用で、表面上で有害物の分
解などの化学反応を発生させることができ、この反応を
利用すれば、光を照射する他は動力を必要とせずに界面
活性剤の分解処理などが可能になる。According to the photocatalyst according to the first aspect of the present invention, an electrode catalyst is formed on the surface of a solar cell instead of a transparent electrode, as specifically described above with reference to the embodiments. In the photocatalyst of the invention according to claims 2, 3 and 4 of the present invention, two or more kinds of metals are used as the electrode catalyst in the photocatalyst according to claims 2 to 4 of the present application. A structure in which semiconductors are stacked, a metal and a semiconductor, a metal and an insulator, a semiconductor and an insulator are stacked, or a thin film of TiO 2 and SnO 2 is stacked;
The photocatalyst of the present invention has a structure in which a thin film of O 2 is sandwiched between thin films of TiO 2 or a structure in which three or more thin films of TiO 2 and SnO 2 are alternately laminated. By electromotive force and photocatalysis of the electrode catalyst, chemical reactions such as the decomposition of harmful substances can be generated on the surface. By using this reaction, surfactants can be used without power except for light irradiation. Can be decomposed.
【００２０】更に、本願の請求項５の発明に係る光触媒
では、請求項１、２、３又は４において、前記電極触媒
上に液溜を作り、白金などで対極を形成して液溜に挿入
し、電極触媒と対極の間に太陽電池による電気を通し、
同時に光を照射して溶液反応を起こすようにしたため、
太陽電池の起電力と電極触媒の光触媒作用に加え、電流
を伴う電気化学反応の作用により、液溜内の有害物をほ
ぼ完全に分解して処理することが可能となった。Further, in the photocatalyst according to the invention of claim 5 of the present application, in claim 1, 2, 3 or 4, a liquid reservoir is formed on the electrode catalyst, and a counter electrode is formed with platinum or the like and inserted into the liquid reservoir. And pass electricity from the solar cell between the electrode catalyst and the counter electrode,
Simultaneously irradiating light to cause a solution reaction,
In addition to the electromotive force of the solar cell and the photocatalytic action of the electrode catalyst, the action of an electrochemical reaction involving an electric current makes it possible to almost completely decompose and treat harmful substances in the liquid reservoir.
【図１】本発明の第１の実施例に係る太陽電池とその上
の電極触媒の構成図である。FIG. 1 is a configuration diagram of a solar cell and an electrode catalyst thereon according to a first embodiment of the present invention.
【図２】本発明の第１実施例に係わる光電気化学反応装
置の構成図である。FIG. 2 is a configuration diagram of a photoelectrochemical reaction device according to a first embodiment of the present invention.
【図３】本発明の第２実施例に係わる光電気化学反応装
置の設置図である。FIG. 3 is an installation view of a photoelectrochemical reaction device according to a second embodiment of the present invention.
【図４】本発明の第２実施例に係わる光電気化学反応装
置の脱硝性能確認実験の構成図である。FIG. 4 is a configuration diagram of an experiment for confirming denitration performance of a photoelectrochemical reaction apparatus according to a second embodiment of the present invention.
１ 基板 ２ 白金電極 ３ ｎ型多結晶シリコン ４ 多結晶シリコン絶縁層 ５ ｐ型多結晶シリコン ６，８ ＴiＯ2 ７ ＳnＯ2 ９ 水槽 １０ 水銀灯、ナトリウムランプ、蛍光灯等 １１，１３ 光電気化学反応装置 １２ ガラス容器 １４ 水銀灯Reference Signs List 1 substrate 2 platinum electrode 3 n-type polycrystalline silicon 4 polycrystalline silicon insulating layer 5 p-type polycrystalline silicon 6,8 TiO 2 7 SnO 2 9 water tank 10 mercury lamp, sodium lamp, fluorescent lamp, etc. 11,13 photoelectrochemical reaction device 12 Glass container 14 Mercury lamp
Claims (5)
極触媒を形成し、電極触媒表面で光と電気の同時作用に
より化学反応を起こすことを特徴とする光触媒。1. A photocatalyst wherein an electrocatalyst is formed on the surface of a solar cell instead of a transparent electrode, and a chemical reaction is caused on the surface of the electrocatalyst by the simultaneous action of light and electricity.
種類以上の金属同士、半導体同士、金属と半導体、金属
と絶縁体或いは半導体と絶縁体などを積み重ねた構造を
持つことを特徴とする光触媒。2. The electrode catalyst according to claim 1, wherein the electrode catalyst has a structure in which two or more kinds of metals, semiconductors, metal and semiconductor, metal and insulator, or semiconductor and insulator are stacked. photocatalyst.
iＯ2とＳnＯ2の薄膜を積み重ねた構造を持つことを特徴
とする光触媒。3. The method according to claim 1, wherein the electrocatalyst comprises T
iO 2 photocatalyst characterized by having a stacked structure a thin film of SnO 2.
nＯ2の薄膜をＴiＯ2の薄膜で挟んだ構造、または、Ｔi
Ｏ2の薄膜とＳnＯ2の薄膜とを交互に３層以上積層した
構造を持つことを特徴とする光触媒。4. The method according to claim 1, wherein the electrode catalyst comprises S
a structure in which an nO 2 thin film is sandwiched between TiO 2 thin films,
A photocatalyst having a structure in which three or more O 2 thin films and SnO 2 thin films are alternately stacked.
電極触媒上に液溜を作り、白金などで対極を形成して液
溜に挿入し、前記電極触媒と対極の間に太陽電池による
電気を通し、同時に光を照射して溶液反応を起こすこと
を特徴とする光触媒。5. The solar cell according to claim 1, wherein a liquid reservoir is formed on the electrode catalyst, a counter electrode is formed of platinum or the like, and the counter electrode is inserted into the liquid reservoir. A photocatalyst characterized in that a solution reaction is caused by simultaneously irradiating light with electricity generated by the photocatalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9095519A JPH10290017A (en) | 1997-04-14 | 1997-04-14 | Optical catalyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9095519A JPH10290017A (en) | 1997-04-14 | 1997-04-14 | Optical catalyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10290017A true JPH10290017A (en) | 1998-10-27 |
Family
ID=14139823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9095519A Withdrawn JPH10290017A (en) | 1997-04-14 | 1997-04-14 | Optical catalyzer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10290017A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014080773A1 (en) | 2012-11-20 | 2014-05-30 | 株式会社 東芝 | Photochemical reaction system |
| WO2015040988A1 (en) | 2013-09-17 | 2015-03-26 | 株式会社 東芝 | Chemical reaction device |
| CN104797741A (en) * | 2012-11-20 | 2015-07-22 | 株式会社东芝 | Photochemical reaction device |
| JP2015206109A (en) * | 2014-04-11 | 2015-11-19 | 株式会社豊田中央研究所 | Photochemical reaction device and electrode for oxidation reaction and electrode for reduction reaction used in the same |
| WO2016114063A1 (en) * | 2015-01-13 | 2016-07-21 | 富士フイルム株式会社 | Hydrogen generating electrode |
| CN106062255A (en) * | 2014-03-24 | 2016-10-26 | 株式会社东芝 | Photoelectrochemical reactor |
| JPWO2015177950A1 (en) * | 2014-05-20 | 2017-04-20 | 株式会社東芝 | Photoelectrochemical reactor |
| US10196748B2 (en) | 2013-05-29 | 2019-02-05 | Kabushiki Kaisha Toshiba | Reduction catalyst and chemical reactor |
| US10344388B2 (en) | 2015-09-16 | 2019-07-09 | Kabushiki Kaisha Toshiba | CO2 reduction catalyst, CO2 reduction electrode, CO2 reduction reaction apparatus, and process for producing CO2 reduction catalyst |
| US10443136B2 (en) | 2014-11-28 | 2019-10-15 | Kabushiki Kaisha Toshiba | Electrochemical reaction device |
| US10494724B2 (en) | 2014-03-11 | 2019-12-03 | Kabushiki Kaisha Toshiba | Photochemical reaction device |
| US10597787B2 (en) | 2014-05-20 | 2020-03-24 | Kabushiki Kaisha Toshiba | Electrochemical reaction device |
| WO2022254617A1 (en) * | 2021-06-02 | 2022-12-08 | 日本電信電話株式会社 | Oxidation-reduction reaction apparatus |
| WO2022254618A1 (en) * | 2021-06-02 | 2022-12-08 | 日本電信電話株式会社 | Redox reaction apparatus |
-
1997
- 1997-04-14 JP JP9095519A patent/JPH10290017A/en not_active Withdrawn
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107090585A (en) * | 2012-11-20 | 2017-08-25 | 株式会社东芝 | Photochemical reaction system |
| CN104797741A (en) * | 2012-11-20 | 2015-07-22 | 株式会社东芝 | Photochemical reaction device |
| US9708717B2 (en) | 2012-11-20 | 2017-07-18 | Kabushiki Kaisha Toshiba | Photochemical reaction device |
| US10844495B2 (en) | 2012-11-20 | 2020-11-24 | Kabushiki Kaisha Toshiba | Photochemical reaction system |
| US9758882B2 (en) | 2012-11-20 | 2017-09-12 | Kabushiki Kaisha Toshiba | Photochemical reaction system |
| WO2014080773A1 (en) | 2012-11-20 | 2014-05-30 | 株式会社 東芝 | Photochemical reaction system |
| US10196748B2 (en) | 2013-05-29 | 2019-02-05 | Kabushiki Kaisha Toshiba | Reduction catalyst and chemical reactor |
| US10472724B2 (en) | 2013-09-17 | 2019-11-12 | Kabushiki Kaisha Toshiba | Chemical reaction device |
| WO2015040988A1 (en) | 2013-09-17 | 2015-03-26 | 株式会社 東芝 | Chemical reaction device |
| US10494724B2 (en) | 2014-03-11 | 2019-12-03 | Kabushiki Kaisha Toshiba | Photochemical reaction device |
| CN106062255A (en) * | 2014-03-24 | 2016-10-26 | 株式会社东芝 | Photoelectrochemical reactor |
| US10378116B2 (en) | 2014-03-24 | 2019-08-13 | Kabushiki Kaisha Toshiba | Photoelectrochemical reaction device |
| JP2015206109A (en) * | 2014-04-11 | 2015-11-19 | 株式会社豊田中央研究所 | Photochemical reaction device and electrode for oxidation reaction and electrode for reduction reaction used in the same |
| JPWO2015177950A1 (en) * | 2014-05-20 | 2017-04-20 | 株式会社東芝 | Photoelectrochemical reactor |
| US10233549B2 (en) | 2014-05-20 | 2019-03-19 | Kabushiki Kaisha Toshiba | Photo-electrochemical reaction device |
| US10597787B2 (en) | 2014-05-20 | 2020-03-24 | Kabushiki Kaisha Toshiba | Electrochemical reaction device |
| US10443136B2 (en) | 2014-11-28 | 2019-10-15 | Kabushiki Kaisha Toshiba | Electrochemical reaction device |
| JPWO2016114063A1 (en) * | 2015-01-13 | 2017-09-28 | 富士フイルム株式会社 | Hydrogen generation electrode |
| WO2016114063A1 (en) * | 2015-01-13 | 2016-07-21 | 富士フイルム株式会社 | Hydrogen generating electrode |
| US10344388B2 (en) | 2015-09-16 | 2019-07-09 | Kabushiki Kaisha Toshiba | CO2 reduction catalyst, CO2 reduction electrode, CO2 reduction reaction apparatus, and process for producing CO2 reduction catalyst |
| WO2022254617A1 (en) * | 2021-06-02 | 2022-12-08 | 日本電信電話株式会社 | Oxidation-reduction reaction apparatus |
| WO2022254618A1 (en) * | 2021-06-02 | 2022-12-08 | 日本電信電話株式会社 | Redox reaction apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH10290017A (en) | Optical catalyzer | |
| Rajeshwar | Photoelectrochemistry and the environment | |
| Ochiai et al. | Photoelectrochemical properties of TiO2 photocatalyst and its applications for environmental purification | |
| CN102309973B (en) | Composite photoelectric catalyst as well as preparation and applications | |
| Khalik et al. | Optimization of degradation of Reactive Black 5 (RB5) and electricity generation in solar photocatalytic fuel cell system | |
| CN104909428B (en) | A kind of Ag3PO4/TiO2The device and method of catalyst and low temperature plasma Combined Treatment bio-refractory organic wastewater | |
| Deng et al. | Enhanced photocatalytic activity of Bi2WO6/TiO2 nanotube array composite under visible light irradiation | |
| KR100927185B1 (en) | Decomposition method of organic pollutant by using electric field of solar cells and Decomposition system of organic pollutant by using electric field of solar cells thereof | |
| JPS60187322A (en) | Purifying method of waste | |
| Pop et al. | Photoelectrocatalytic hydrogen production using nitrogen containing water soluble wastes | |
| Zhang et al. | A novel photoelectrocatalytic system for organic contaminant degradation on a TiO2 nanotube (TNT)/Ti electrode | |
| Kaneko et al. | Direct electrical power generation from urine, wastes and biomass with simultaneous photodecomposition and cleaning | |
| Ojani et al. | Photoelectrocatalytic degradation of 3-nitrophenol at surface of Ti/TiO 2 electrode | |
| KR20160060191A (en) | Photoelectrocatalytic Water Treatment Apparatus by Using Immobilized Nanotubular photosensized electrode | |
| JP2007144328A (en) | Photocatalyst fiber and liquid cleaning apparatus using the same | |
| CN112156647A (en) | High-voltage auxiliary photocatalytic purification module, purification device and method | |
| JP2000037615A (en) | Light source-integrated type photocatalytic apparatus and manufacture thereof | |
| CN110585864B (en) | Reaction process suitable for low-temperature plasma concerted catalytic degradation of VOCs and membrane catalyst preparation process | |
| KR101472621B1 (en) | Bifacial anode for water treatment with photoelectrocatalytic layer and electrocatalytic layer, a preparation method thereof and a water treatment method using the same | |
| CN214261381U (en) | High-voltage auxiliary photocatalytic purification module and purification device | |
| CN100563819C (en) | Has diffusion barrier of photocatalysis performance and preparation method thereof | |
| JP7012951B2 (en) | Purification equipment, purification method, carbon material manufacturing method and carbon material | |
| Mendive et al. | Current issues concerning the mechanism of pristine TiO2 photocatalysis and the effects on photonic crystal nanostructures | |
| KR100437096B1 (en) | A Waste Water Treatment System with Photoreactor | |
| JP5214404B2 (en) | Method for detoxifying persistent organic compounds |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20040706 |