JP5428066B2 - ナノカーボン材料の製造装置及びその製造方法 - Google Patents
ナノカーボン材料の製造装置及びその製造方法 Download PDFInfo
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- JP5428066B2 JP5428066B2 JP2011541960A JP2011541960A JP5428066B2 JP 5428066 B2 JP5428066 B2 JP 5428066B2 JP 2011541960 A JP2011541960 A JP 2011541960A JP 2011541960 A JP2011541960 A JP 2011541960A JP 5428066 B2 JP5428066 B2 JP 5428066B2
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- organic liquid
- tank body
- catalyst
- tank
- gas
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/02—Pretreatment of the material to be coated
- C23C16/0272—Deposition of sub-layers, e.g. to promote the adhesion of the main coating
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/26—Deposition of carbon only
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/448—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials
- C23C16/4481—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials by evaporation using carrier gas in contact with the source material
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Description
<基板>Si(100)面方位、寸法9×15×0.5mm3のシリコン基板を用いてカーボンナノチューブの合成試験を行なった。基板はあらかじめアセトン中で超音波洗浄し、さらに大気中1000℃で一時間、酸化処理を行い基板表面にSiO2膜を形成させた。
<触媒の調製>
(1)エタノール4mlに触媒原料となる酢酸鉄と酢酸コバルトを溶かした溶液に、ゼオライト(超安定化Y型、平均細孔直径0.74nm)0.1gを超音波分散させた。金属重量比はゼオライトに対してそれぞれ2.5wt%とした。
(2)80℃でエタノールを蒸発させて乾燥させた。
(3)得られた乾燥粉末をエタノール溶液4mlに再度超音波分散させた。
(4)80℃でエタノールを蒸発させ、ゼオライトへ触媒原料を担持させた。
(5)酢酸鉄担持ゼオライトを0.7wt%の割合でエタノール中に分散させ触媒原料担体分散液とした。
(6)100℃に加熱したSi基板上に触媒原料担体分散液を滴下して触媒原料担体塗付膜を形成した。
<合成>(6)で触媒原料担体を塗付したSi基板を槽体200にセットし、槽体200内に窒素(N2)ガスを導入しながら槽体200をエタノール中に沈降配置させた。そして、基板表面温度を放射温度計で外部から計測しながら基板背後のカーボンヒータ5aに直流電流を流し、基板を加熱した。そして、基板表面温度を700℃から1100℃まで50℃刻みで合成温度条件を変えてそれぞれ合成実験を行った。設定した合成温度への昇温途中も槽体200内に窒素(N2)ガスを導入し続け、基板表面温度が設定した合成温度に達した時点で窒素ガス導入を停止し、窒素ガスと置換して反応空間に飽和したエタノール蒸発ガスと触媒とを反応させて10分間カーボンナノチューブを成長させた。窒素ガス導入を停止し、エタノール蒸発ガスが反応空間に進入して窒素ガスと置換する際に、気相の反応空間から窒素ガスやエタノールガス、反応による生成ガスが泡となって槽体200内から排出されるのが観察された(図9参照)。窒素ガス導入停止から10分後に窒素ガス導入を再開し、同時にヒータへの通電を停止した。そして、基板温度が室温に戻ってから基板上に堆積したカーボンナノチューブとともに、槽体200をエタノール中から取り出した。
Microscope、SEM)画像で図14が二層のカーボンナノチューブ、図15、図16が単層のカーボンナノチューブを示す。図14の二層カーボンナノチューブでは、チューブが入れ子状に配置され間隔の狭い筋が見られる。図15より、側面が濃い二本線で直径が1.0[nm]程度でバンドル状の何本かの束となった単層カーボンナノチューブが確認される。また、図16では、結晶性の高い1本の単層カーボンナノチューブが確認される。
2、200 槽体
2a 閉鎖空間
2b 反応空間
3 触媒
4 触媒担持基板
5 加熱装置
6 有機液体
7 不活性ガス供給装置
8 境界部
9 連通部
10 冷却装置
16 有機液体供給装置
21a〜21d、201a〜201d 四周壁
31 液槽
33 蓋部材
IG 不活性ガス
VG 蒸発ガス
F 槽璧で囲まれた面
N ナノカーボン材料
Claims (5)
- 閉鎖空間を内部に形成し有機液体との連通部を有する槽体と、
閉鎖空間内に配置した触媒担持基板であって、担持した触媒を槽体の閉鎖空間に曝し、かつ触媒を有機液体に直接に接触させない位置に配置した触媒担持基板と、
触媒担持基板の加熱装置と、
槽体の連通部において槽体の閉鎖空間と接するように配置された有機液体と、
触媒担持基板の加熱による有機液体の蒸発時にその蒸発ガスと置換される不活性ガスであり、槽体の閉鎖空間に該不活性ガスを供給する不活性ガス供給装置と、を有し、
槽体の閉鎖空間が反応空間とされ、槽体の槽璧で囲まれた面全体が反応空間と有機液体との境界部となるように有機液体と槽体との連通部が形成されていることを特徴とするナノカーボン材料の製造装置。 - 有機液体を収容し槽体全体をその有機液体中に浸漬させ得る液槽を有し、
槽体は下面開口を連通部とする反転ケース体からなり、有機液体中に浸漬された状態で内部を閉鎖空間とし、支持機構を介して液槽内の有機液体に対して浸漬、引き揚げ可能に設けられ、
さらに、槽体は、同槽体を液槽内の有機液体へ浸漬操作するとき、又は触媒担持基板を合成温度に向けて加熱昇温するとき、を含む非合成時には槽体内に不活性ガスを供給して閉鎖空間を不活性ガスによる高濃度状態とする態様と、
有機液体中での触媒担持基板の加熱によるナノカーボン材料の合成中には不活性ガスの供給を停止し有機液体の蒸発ガスで置換して閉鎖空間内を有機液体の蒸発ガスによる高濃度状態とする態様と、を有することを特徴とする請求項1記載のナノカーボン材料の製造装置。 - 槽体の閉鎖空間に面する有機液体の液面外縁サイズが槽体の内法サイズと略同一であることを特徴とする請求項1又は2記載のナノカーボン材料の製造装置。
- 槽体の槽壁で囲まれた面全体が有機液体と反応空間との境界をなすように槽体内の反応空間に面して有機液体を配置し、
触媒を有機液体に直接に接触させない位置で、かつ触媒を槽体の反応空間に曝した状態で触媒担持基板を配置し、
触媒担持基板が合成温度に加熱されるとき以外は、反応空間内に不活性ガスを供給し、触媒担持基板が合成温度に加熱された場合に有機液体の蒸発ガスと置換して槽体の槽壁で囲まれた面全体で有機液体蒸発ガスを供給しつつ触媒上にナノカーボン材料を合成することを特徴とするナノカーボン材料の製造方法。 - 下面を開口した槽体内を反応空間とし該反応空間に不活性ガスを充填した状態で有機液体を収容した液槽内に槽体を浸漬し、その状態でナノカーボン材料を合成することを特徴とする請求項4記載のナノカーボン材料の製造方法。
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| JP6569675B2 (ja) * | 2014-07-31 | 2019-09-11 | 国立大学法人 熊本大学 | ポット型ナノカーボン材料及びその製造方法 |
| US10683572B2 (en) | 2018-10-15 | 2020-06-16 | Goodrich Corporation | Silane recirculation for rapid carbon/silicon carbide or silicon carbide/silicon carbide ceramic matrix composites |
| JP2020197544A (ja) * | 2020-09-17 | 2020-12-10 | 国立大学法人鳥取大学 | 吸着装置及び分析装置 |
Citations (2)
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| JP2003012312A (ja) * | 2001-06-26 | 2003-01-15 | Japan Science & Technology Corp | 有機液体による高配向整列カーボンナノチューブの合成方法及びその合成装置 |
| JP2006219362A (ja) * | 2005-02-08 | 2006-08-24 | Microphase Co Ltd | 液相中への気相導入によるカーボンナノチューブ膜の合成方法および合成装置 |
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| JP2003012312A (ja) * | 2001-06-26 | 2003-01-15 | Japan Science & Technology Corp | 有機液体による高配向整列カーボンナノチューブの合成方法及びその合成装置 |
| JP2006219362A (ja) * | 2005-02-08 | 2006-08-24 | Microphase Co Ltd | 液相中への気相導入によるカーボンナノチューブ膜の合成方法および合成装置 |
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