TWI695914B - Manufacturing method of photocatalyst filter and air purification device composed of photocatalyst filter - Google Patents
Manufacturing method of photocatalyst filter and air purification device composed of photocatalyst filter Download PDFInfo
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- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
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Abstract
一種光觸媒濾網所組成的空氣淨化裝置,包含一外殼體,其內部具有一容置空間,且外殼體前端二側設有一進風孔,其後端二側至少設有一個出風孔;一活性碳濾網,設在臨進風孔之容置空間內,其內含活性炭成分,可有效過濾含PM2.5顆粒的微細分子;一風扇,設在活性碳濾網的後側;一光觸媒濾網,由含有嵌鍍TiO2奈米顆粒組成的金屬網所構成,其設置風扇後方,且令風扇自風孔抽入之空氣通過光觸媒濾網;以及一LED UV光觸媒燈組,設置於容置空間內,其包含數個可產UV光源的LED晶粒,用以產生UV波長介於250~400nm範圍的光源,且令LED UV光觸媒燈組的光源照射光觸媒濾網,可產生自由基分子來自動分解有毒氣體分子,用以淨化空氣;藉此,組合成一具有過濾微細顆粒和自動分解有機體有害物質的光觸媒空氣淨化裝置。 An air purification device composed of a photocatalyst filter includes an outer shell with an accommodating space inside, and an air inlet hole is provided on both sides of the front end of the outer shell, and at least one air outlet hole is provided on both sides of the rear end; Activated carbon filter is located in the receiving space near the entrance air hole, which contains activated carbon components, which can effectively filter fine molecules containing PM2.5 particles; a fan is located on the rear side of the activated carbon filter; a photocatalyst The filter is composed of a metal mesh containing embedded TiO 2 nanoparticles, which is arranged behind the fan, and the air drawn by the fan from the air hole passes through the photocatalyst filter; and an LED UV photocatalyst lamp set is installed in the container In the space, it contains several LED dies that can produce UV light sources, which are used to generate light sources with UV wavelengths ranging from 250 to 400 nm, and the light source of the LED UV photocatalyst lamp group is irradiated with the photocatalyst filter to generate free radical molecules. To automatically decompose toxic gas molecules to purify the air; by this, it is combined into a photocatalyst air purification device with filtering fine particles and automatically decomposing harmful substances of organisms.
Description
本發明係有關一種光觸媒濾網之製法及其所組成的光觸媒空氣淨化裝置,尤指一種可淨化空氣之光觸媒濾網。 The invention relates to a method for manufacturing a photocatalyst filter screen and a photocatalyst air purification device composed of the photocatalyst filter screen, in particular to a photocatalyst filter screen capable of purifying air.
按,光觸媒是結合紫外線光源發展出來的產品,光觸媒的原理係利用光的能量,及奈米二氧化鈦(TiO2)作為觸媒,所引發之一系列化學反應;具體來說,當觸媒材料經光波長的照射,會產生電子與電洞,並與空氣中的水分子與氧分子作用可產生氫氧離子OH-,其極易切斷有機物的分子結合而使其分解,利用此作用可將空氣中的惡臭化學物質,簡單地分解為「無害物質」,因此,光觸媒具有脫臭、抗菌、防霉、分解污垢等功能。而光觸媒被廣泛地研究,並應用在環保、能源、殺菌、自我潔淨等方面,自1972年,Fujishma和Honda首次在Nature雜誌上發表TiO2經照光後會分解水產生H2及O2後,越來越多人投入TiO2光催化性質相關的研究,並致力於各種可能的改質方法,以提高TiO2光觸媒的效果。 According to the press, photocatalyst is a product developed by combining with ultraviolet light source. The principle of photocatalyst is to use light energy and nano titanium dioxide (TiO 2 ) as a catalyst to initiate a series of chemical reactions; specifically, when the catalyst material is irradiating wavelength of light, electrons and holes generated, with the water molecules and oxygen molecules in the air can effect hydroxide ions OH -, which is easy to cut and binding organic molecules to break down, with this effect may be The malodorous chemical substances in the air are simply decomposed into "harmless substances". Therefore, the photocatalyst has the functions of deodorization, antibacterial, mildew prevention, and decomposition of dirt. Photocatalysts have been extensively studied and applied in environmental protection, energy, sterilization, self-cleaning, etc. Since 1972, Fujishma and Honda first published in Nature magazine that TiO 2 will decompose water to produce H 2 and O 2 after illumination. More and more people are investing in the research related to the photocatalytic properties of TiO2, and are committed to various possible modification methods to improve the effect of TiO2 photocatalyst.
次按,TiO2的結晶構造有正方晶系的高溫金紅石(rutile)型、低溫銳鈦礦(anatase)型及屬於斜方晶系的板鈦礦(brookite)型3種。惟查,僅有銳鈦礦結構具光觸媒的效果。由於具有優異之光觸媒、超親水性等特性,已成為業界爭相研發之產品,傳統上以電化學陽極氧化法製備TiO2,大都使用鈦塊材做為基材,其應用範圍有限;其他製造方法如將鈦塊材直接浸泡在強鹼溶液中,可形成多孔結構之TiO2膜,然該製程之浸泡時間一般至少需要數小時,且常須加溫至60℃以上。 Secondly, the crystal structure of TiO 2 has three types: high-temperature rutile type of tetragonal system, low-temperature anatase type and brookite type belonging to orthorhombic system. However, only the anatase structure has the effect of photocatalyst. Due to its excellent photocatalyst and super-hydrophilic properties, it has become a product that the industry is competing to develop. Traditionally, TiO 2 has been prepared by electrochemical anodization. Most of them use titanium blocks as substrates, and their application scope is limited; other manufacturing If the titanium block is immersed in a strong alkaline solution directly, a TiO 2 film with a porous structure can be formed. However, the immersion time of this process generally requires at least several hours, and it is often necessary to heat it to above 60°C.
將奈米TiO2高溫燒結於陶瓷表面,由於高溫控制不易,製作成本過高且造成奈米銳鈦礦顆粒產生紅石礦失去光觸媒功能或者效能不彰。將TiO2利用樹脂噴塗於器物表面,但是易受樹脂密著力不佳或者TiO2表面清潔不夠造成表面顆粒因久剝落或樹脂蒙蔽效能下降,無法發揮效能。 Sintering nano-TiO 2 on the ceramic surface at high temperature is difficult to control at high temperature, the production cost is too high and the nano anatase particles produce redstone ore to lose the photocatalyst function or have poor performance. TiO 2 is sprayed on the surface of the utensils with resin, but it is susceptible to poor resin adhesion or insufficient cleaning of the TiO 2 surface, which can cause the surface particles to peel off for a long time or the effectiveness of the resin masking to be reduced, which cannot be effective.
是以,TiO2雖具有極佳之光觸媒特性,然實際應用時仍有許多技術上之問題有待克服,特別如何將TiO2與金屬網等基材結合在一起而不會脫落,為一待克服之技術問題。 Therefore, although TiO 2 has excellent photocatalyst properties, there are still many technical problems to be overcome in practical application, especially how to combine TiO 2 with metal mesh and other substrates without falling off, as one to be overcome Technical issues.
本發明之主要目的,係在提供一種可淨化空氣之光觸媒濾網的製法,濾網是由含有嵌鍍二氧化鈦奈米顆粒組成的金屬網,經由UV光照射後,可產生自由基分子自動分解有毒氣體分子,具有淨化空氣之功效增進。 The main purpose of the present invention is to provide a method for preparing a photocatalyst filter that can purify air. The filter is a metal mesh composed of embedded titanium dioxide nanoparticles. After irradiation with UV light, free radical molecules can be automatically decomposed and toxic Gas molecules have the effect of purifying the air.
為達上述目的,本發明所採用的技術手段,其實施步驟包含:a).提供一濾網,該濾網係由孔徑10~200mech的金屬網所構成;b).提供一脫脂程序:係以表面活性劑或碱類化學物質作為脫脂材料,用以清潔該濾網表面,防止油脂的滲入影響後續流程的清潔度;c).提供一預浸程序:預浸作用主要在於除去脫脂後之表面活性劑與碱類化學物質殘留;d).提供一活化程序:主要在於活化該濾網表面,防止雜物殘留在該濾網表面,影響後電鍍作業;以及e).提供一電鍍程序:此電鍍作業包含鍍銅、鍍鎳及鍍銀流程,在過程中的電鍍浴內含有粒度為5~100nm及濃度約5ppm~2.0g/l的TiO2顆粒,電鍍浴中含Ni2+、Cu2+及Ag2+約3g/l~7g/l,次亞磷酸鈉約10~30g/l,PH值6~10,鍍槽溫度40℃~60℃,電流密度10~35AsF;
f).藉此,能將TiO2均勻分佈地沈積嵌鍍在該濾網上,據以製成一光觸媒濾網。
To achieve the above purpose, the technical means adopted by the present invention, the implementation steps include: a) to provide a filter screen, the filter screen is composed of a metal mesh with a pore size of 10 ~ 200mech; b) to provide a degreasing program: Department Use surfactants or alkali chemicals as the degreasing material to clean the surface of the filter to prevent the penetration of grease and affect the cleanliness of the subsequent process; c). Provide a prepreg procedure: the role of prepreg is mainly to remove the degreasing Surfactant and alkali chemical residues; d). Provide an activation procedure: mainly to activate the surface of the filter to prevent impurities from remaining on the surface of the filter and affect the post-plating operation; and e). Provide an electroplating procedure: This electroplating operation includes copper plating, nickel plating and silver plating processes. The plating bath in the process contains TiO 2 particles with a particle size of 5~100nm and a concentration of about 5ppm~2.0g/l. The plating bath contains Ni 2+ and Cu 2+ and Ag 2+ about 3g/l~7g/l, sodium hypophosphite about 10~30g/l, PH value 6~10, plating
依據前揭特徵,該濾網可包括選自:鐵網、不銹鋼網及銅網。 According to the aforementioned features, the filter may include a steel mesh, a stainless steel mesh, and a copper mesh.
依據前揭方法所製成之光觸媒濾網,所組成的一種光觸媒空氣淨化裝置,包含:一外殼體,其內部具有一容置空間,且該外殼體前端二側設有一進風孔,其後端二側至少設有一個出風孔;一活性碳濾網,係設在臨近該進風孔之容置空間內,其內含活性炭成分,可有效過濾含PM2.5顆粒的微細分子;一風扇,係設在該活性碳濾網的後側;一光觸媒濾網,係由含有嵌鍍TiO2奈米顆粒組成的金屬網所構成,其設置於該風扇後方,且令該風扇自該進風孔抽入之空氣通過該光觸媒濾網;以及一LED UV光觸媒燈組,係設置於該容置空間內,其包含數個可產UV光源的LED晶粒,用以產生UV波長係介於250~400nm範圍的光源,且令該LED UV光觸媒燈組的光源照射該光觸媒濾網,可產生自由基分子來自動分解有毒氣體分子,用以淨化空氣;藉此,組合成一具有過濾微細顆粒和自動分解有機體有害物質的光觸媒空氣淨化裝置。 The photocatalyst filter made according to the pre-exposed method comprises a photocatalyst air purification device, which comprises: an outer casing with an accommodating space inside, and an air inlet on the two sides of the front end of the outer casing, followed by There is at least one air outlet on both sides of the end; an activated carbon filter is located in the accommodating space adjacent to the air inlet, which contains activated carbon components, which can effectively filter fine molecules containing PM2.5 particles; The fan is located on the rear side of the activated carbon filter; a photocatalyst filter is composed of a metal mesh containing embedded TiO 2 nanoparticles, which is arranged behind the fan and allows the fan to pass from the inlet The air drawn by the air hole passes through the photocatalyst filter; and an LED UV photocatalyst lamp set, which is arranged in the accommodating space, contains several LED dies that can produce UV light sources, and is used to generate UV wavelengths between A light source in the range of 250~400nm, and the light source of the LED UV photocatalyst lamp set irradiates the photocatalyst filter, which can generate free radical molecules to automatically decompose toxic gas molecules to purify the air; by this, it is combined into a filter with fine particles and Photocatalyst air purification device that automatically decomposes harmful substances of organisms.
依據前揭特徵,該外殼體之材質可包括:不鏽鋼、陶瓷、壓克力、及PET其中任一材質所構成的管體或任一形體。 According to the aforementioned features, the material of the outer casing may include: a tube or any shape made of any one of stainless steel, ceramic, acrylic, and PET.
藉助上揭技術手段,本發明以脫脂→預浸→活化→電鍍等程序來製作該光觸媒濾網,達到將奈米級TiO2顆粒均勻分布的嵌鍍沈積在濾網上,其具有不需要經過高溫燒結,亦不需要使用樹脂噴塗造成TiO2顆粒失效;因此可防止TiO2顆粒脫落,增進食用壽命之功效者。進一步,以該光觸媒濾網所組成的光觸媒空氣淨化裝置,可有效地將有害氣體分子分解成無害成分釋放出乾淨氣體,以達到淨化空氣作用。 With the help of the above-mentioned technical means, the present invention uses degreasing→pre-soaking→activation→electroplating and other procedures to make the photocatalyst filter screen, so as to deposit and deposit nano-scale TiO 2 particles evenly on the filter screen. High-temperature sintering does not require the use of resin spraying to cause the failure of TiO 2 particles; therefore, it can prevent the TiO 2 particles from falling off and improve the efficacy of eating life. Further, the photocatalyst air purification device composed of the photocatalyst filter can effectively decompose harmful gas molecules into harmless components and release clean gas to achieve the effect of purifying air.
10:光觸媒濾網 10: Photocatalyst filter
11:濾網 11: Filter
12:TiO2顆粒 12: TiO 2 particles
20:外殼體 20: outer shell
21:容置空間 21: accommodating space
22:進風孔 22: air inlet
23:出風孔 23: Outlet
30:活性碳濾網 30: Activated carbon filter
40:風扇 40: fan
50:LED UV光觸媒燈組 50: LED UV photocatalyst lamp group
51:LED晶粒 51: LED die
60:光觸媒空氣淨化裝置 60: Photocatalyst air purification device
圖1 係本發明光觸媒濾網之製法實施步驟流程圖。 FIG. 1 is a flow chart of the implementation steps of the manufacturing method of the photocatalyst filter of the present invention.
圖2 係本發明光觸媒濾網之外觀立體圖。 2 is a perspective view of the appearance of the photocatalyst filter of the present invention.
圖3 係圖2中之部分結構放大圖。 Fig. 3 is an enlarged view of a part of the structure in Fig. 2.
圖4 係本發明光觸媒空氣淨化裝置之結構示意圖。 4 is a schematic structural view of the photocatalyst air purification device of the present invention.
以下說明將配合圖式作為實施例,但不限定於此,本發明尚可施行於其它的實施例中,而公知的步驟或元件並未描述於細節中,以避免對本發明形成不必要之限制。特別注意的是,圖式僅為示意之用,並非代表元件實際之尺寸或數量,有些細節可能未完全繪出,以求圖式之簡潔。 The following description uses the drawings as an embodiment, but it is not limited thereto. The present invention can be implemented in other embodiments, and well-known steps or elements are not described in details to avoid unnecessary restrictions on the present invention. . It is important to note that the drawings are for illustrative purposes only, and do not represent the actual size or number of components. Some details may not be fully drawn for simplicity.
首先,請參閱圖1~圖4所示,本發明一種光觸媒濾網10之製法,其實施步驟包含:a).提供一濾網11,該濾網係由孔徑10~200mech的金屬網所構成;本實施例中,該濾網11包括可選自:鐵網、不銹鋼網及銅網,但不限定於此;b).提供一脫脂程序:係以表面活性劑或碱類化學物質作為脫脂材料,用以清潔該濾網11表面,防止油脂的滲入影響後續流程的清潔度;c).提供一預浸程序:預浸作用主要在於除去脫脂後之表面活性劑與碱類化學物質殘留;d).提供一活化程序:主要在於活化該濾網11表面,防止雜物殘留在該濾網11表面,影響後電鍍作業;以及e).提供一電鍍程序:此電鍍作業包含鍍銅、鍍鎳及鍍銀流程,在過程中
的電鍍浴內含有粒度為5~100nm及濃度約5ppm~2.0g/l的TiO2顆粒,電鍍鍍浴中含Ni2+、Cu2+及Ag2+約3g/l~7g/l,次亞磷酸鈉約10~30g/l,PH值6~10,鍍槽溫度40℃~60℃,電流密度10~35AsF;f).藉此,能將TiO2顆粒12均勻分佈地沈積嵌鍍在該濾網11上,據以製成一光觸媒濾網10。
First, please refer to FIG. 1 to FIG. 4, a method for manufacturing a
進一步說明,一般TiO2在低溫製備時,大多形成非結晶的顆粒,必須在300℃左右煅燒,才會形成銳鈦礦結晶,這種型態的結晶才具有光催化效果,但有些載體,例如一般的玻璃、皮革、布料等無法耐此高溫,本發明即揭示在製備時即形成銳鈦礦奈米結晶顆粒,當其塗布在載體後,就不需再高溫煅燒。 To further explain, when TiO 2 is generally prepared at low temperature, most of it forms non-crystalline particles. It must be calcined at about 300°C to form anatase crystals. This type of crystals has a photocatalytic effect, but some carriers, such as General glass, leather, cloth, etc. cannot withstand this high temperature. The present invention discloses that anatase nanocrystalline particles are formed during preparation. When they are coated on a carrier, no high-temperature calcination is required.
進一步說明,本發明之光觸媒濾網10是利用上揭技術手段,該光觸媒濾網10之製作流程包含:脫脂→預浸→活化→電鍍等程序。達到將奈米級TiO2顆粒12均勻分布的嵌鍍沈積在濾網11上,不需要經過高溫燒結,亦不需要使用樹脂噴塗(UV光照射後會加速樹脂老化剝落)造成TiO2顆粒12失效。因此可永久沈積在濾網11上,防止TiO2顆粒12脫落之功效增進者。
To further explain, the
圖3所示為該光觸媒濾網10之放大圖。圖中之濾網11經由放大圖示可清楚看出濾網11上分布均勻的奈米TiO2顆粒12。當有毒氣體流經已激化的TiO2顆粒12表面時,TiO2表面釋出的自由基,分解有害氣體成分。
FIG. 3 shows an enlarged view of the
請續參閱圖4所示,本發明以上揭方法所製成的光觸媒濾網10,進一步組成的光觸媒空氣淨化裝置60,包含:一外殼體20,其內部具有一容置空間21,且該外殼體20前端二側設有一進風孔22,其後端二側至少設有一個出風孔23;本實施例
中,該外殼體之材質可包括:不鏽鋼、陶瓷、壓克力、及PET其中任一材質所構成的管體或任一形體。
Please continue to refer to FIG. 4, the
一活性碳濾網30,係設在臨近該進風孔22之容置空間21內,其內含活性炭成分,可有效過濾含PM2.5顆粒的微細分子;一風扇40,係設在該活性碳濾網30的後側;本實施例中,該活性碳濾網30作為空氣導入的顆粒組成過濾作用和吸附少量有毒氣體。易言之,該活性碳濾網30即為一初級過濾功能。
An activated
一光觸媒濾網10,係由含有嵌鍍TiO2奈米顆粒12組成的金屬網11所構成,其設置於該風扇40後方,且令該風扇40自該進風孔22抽人之空氣通過該光觸媒濾網10;本實施例中,該光觸媒濾網10是利用上揭技術手段所製成,將奈米級TiO2顆粒12均勻分布的嵌鍍沈積在濾網11上,具有防止TiO2脫落,增進使用壽命之功效者。
A
一LED UV光觸媒燈組50,係設置於該容置空間21內,其包含數個可產UV光源的LED晶粒51,用以產生UV波長係介於250~400nm範圍的光源,且令該LED UV光觸媒燈組50的光源照射該光觸媒濾網10,可產生自由基分子來自動分解有毒氣體分子,用以淨化空氣;藉此,組合成一具有過濾微細顆粒和自動分解有機體有害物質的光觸媒空氣淨化裝置60。
An LED UV
本發明所應用之原理,光催化處理程序之光分解機制是藉由紫外光或太陽光激發光觸媒,使觸媒產生電子以及電洞,藉以氧化表面吸附之物質,進而將表面吸附之物質裂化為小分子。以TiO2為例,TiO2反應從250~400nm之光波長開始反應(因為TiO2之能階差約為3.1eV,而400nm之光波長大約可提供3.1eV之能量),TiO2吸收光能量產生電子(e-)及電洞(h+),此電洞具有相當強之氧化力,可以直接將吸 附在物質表面之汚染物分子直接氧化使其分解,或者將吸附於物質表面之水分子氧化為氫氧自由基(‧OH)。原本大分子之汚染物,經由光觸媒照光反應將大分子裂解為小分子,達到汚染物清除之目的。 According to the principle applied in the present invention, the photolysis mechanism of the photocatalytic treatment process is to stimulate the photocatalyst by ultraviolet light or sunlight to make the catalyst generate electrons and holes, thereby oxidizing the material adsorbed on the surface, and then cracking the material adsorbed on the surface into Small molecule. Taking TiO2 as an example, the TiO2 reaction starts from the light wavelength of 250~400nm (because the energy level difference of TiO2 is about 3.1eV, and the light wavelength of 400nm can provide about 3.1eV of energy), TiO2 absorbs light energy to generate electrons (e -) and electric hole (h+), this hole has a very strong oxidizing power, can directly suck The pollutant molecules attached to the surface of the substance are directly oxidized to decompose it, or the water molecules adsorbed on the surface of the substance are oxidized into hydroxyl radicals (‧OH). Originally, the pollutants of the macromolecules were cleaved into small molecules by the photocatalyst light reaction to achieve the purpose of removing the pollutants.
本實施例中,該風扇40可透過外部電源,啟動風扇40的運作,提供該光觸媒空氣清淨裝置60的整個空氣流動力,其經由該LED UV光觸媒燈組50與光觸媒濾網10的同時啟動,提供有毒氣體的分解和風冷散熱作用。
In this embodiment, the
圖4所示為光觸媒空氣淨化裝置60之較佳實施例圖。該光觸媒濾網10,利用嵌鍍技術將奈米級銳鈦礦TiO2顆粒10嵌鍍在濾網12上。經由電源啟動後空氣開始由下而上流動,空氣經該活性炭過濾30後流經該光觸媒濾網10的同時與在濾網上的TiO2接觸,TiO2顆粒12表面已經過UV照射後產生自由基反應,空氣與自由基碰撞後,可將有害氣體分子分解成無害成分釋放出乾淨氣體,達到淨化空氣作用。
FIG. 4 shows a preferred embodiment of the photocatalyst
藉助上揭技術手段,本發明以脫脂→預浸→活化→電鍍等程序來製作該光觸媒濾網10,達到將奈米級TiO2顆粒12均勻分布的嵌鍍沈積在濾網11上,其具有不需要經過高溫燒結,亦不需要使用樹脂噴塗造成TiO2顆粒12失效;因此可防止TiO2顆粒12脫落,增進食用壽命之功效者。進一步,以該光觸媒濾網10所組成的光觸媒空氣淨化裝置60,可有效地將有害氣體分子分解成無害成分釋放出乾淨氣體,以達到淨化空氣作用。
With the help of the above-mentioned technical means, the present invention makes the
綜上所述,本發明所揭示之技術手段,確具「新穎性」、「進步性」及「可供產業利用」等發明專利要件,祈請 鈞局惠賜專利,以勵發明,無任德感。 In summary, the technical means disclosed by the present invention do have invention patent requirements such as "novelty", "progressiveness", and "availability for industrial use". Virtue.
惟,上述所揭露之圖式、說明,僅為本發明之較佳實施例,大凡熟悉此項技藝人士,依本案精神範疇所作之修飾或等效變化,仍應包括在本案申請專利範圍內。 However, the diagrams and descriptions disclosed above are only preferred embodiments of the present invention. Those who are familiar with this art and who make modifications or equivalent changes in accordance with the spirit of this case should still be included in the scope of the patent application in this case.
10:光觸媒濾網 10: Photocatalyst filter
11:濾網 11: Filter
12:TiO2顆粒 12: TiO 2 particles
20:外殼體 20: outer shell
21:容置空間 21: accommodating space
22:進風孔 22: air inlet
23:出風孔 23: Outlet
30:活性碳濾網 30: Activated carbon filter
40:風扇 40: fan
50:LED UV光觸媒燈組 50: LED UV photocatalyst lamp group
51:LED晶粒 51: LED die
60:光觸媒空氣淨化裝置 60: Photocatalyst air purification device
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