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公开(公告)号：KR100995388B1
公开(公告)日：2010-11-19
申请号：KR1020080092351
申请日：2008-09-19
Applicant: 한국과학기술원
Abstract: 본원발명은 탄소나노튜브의 직경제어방법에 관한 것이다. 상세하게는, 탄소나노튜브의 직경제어방법은 템플릿에 금속 프리커서(metal precursor)를 도핑시키는 단계; 수소 분위기에서의 열처리에 의하여 환원시키는 단계; 질소플라즈마를 처리하여 템플릿 외벽에 존재하는 금속을 제거하는 단계; 메탄가스를 공급하여 탄소나노튜브를 성장시키는 단계를 포함한다.
상기의 탄소나노튜브는 템플릿의 기공 속에 존재하는 금속촉매로부터 성장하는 것이므로, 성장된 탄소나노튜브의 직경은 템플릿의 기공 크기와 일치하게 된다. 즉, 본원발명은 템플릿을 이용하여 탄소나노튜브의 직경을 제어할 수 있게 되는 것이다.
또한, 본원발명은 상기의 방법으로 제조된 직경이 제어된 탄소나노튜브에 관한 것이다.
템플릿, 탄소나노튜브, 금속, 플라즈마-
公开(公告)号：KR100842810B1
公开(公告)日：2008-07-01
申请号：KR1020080001145
申请日：2008-01-04
Applicant: 한국과학기술원
Abstract: A noble method is provided to produce hydrogen while controlling the generation of hydrogen by preventing oxidation of pure metal nanoparticles using a block copolymer and performing an oxidation reaction of the metals only when the metal nanoparticles are exposed to water, thereby decomposing hydrogen from water, a hydrogen produced by the method is provided. In a hydrogen producing method comprising the steps of: (a) forming metal nanoparticles from a metal salt using a block copolymer; and (b) exposing the metal nanoparticles to water to generate hydrogen by an oxidation reaction of the metal nanoparticles with water, the hydrogen producing method is characterized in that a block copolymer micelle process is used, the block copolymer micelle process comprising a process of forming metal nanoparticles by allowing the block copolymer to form a micelle by self-assembly and adding a metal salt selected from the group consisting of iron(Fe), nickel(Ni), and cobalt(Co) into the micelle in the step(a). The method comprises forming the micelle by self-assembly when dissolving the block copolymer into a solvent. The block copolymer is at least one selected from the group consisting of poly(styrene-block-4-vinylpyridine), poly(styrene-block-2-vinylpyridine), poly(styrene-block-ethylene oxide), poly(styrene-block-methacrylic acid), and poly(styrene-block-acrylic acid). The solvent is at least one selected from the group consisting of water, toluene, N,N-dimethylformamide, ethylacetate, methylene chloride, chloroform, acetone, dimethylsulfoxide, N-methylpyrrolidone, dioxane, tetrahydrofuran, methyl ethyl ketone, acetonitrile, methanol, and ethanol. Further, the metal salt is acetate salt or chloride salt.
Abstract translation: 通过使用嵌段共聚物防止纯金属纳米粒子的氧化，仅在金属纳米粒子暴露在水中时进行金属的氧化反应，从而分解氢，从而提供氢来制造氢气，同时控制氢的产生。 提供了通过该方法产生的氢。 在制氢方法中，包括以下步骤：（a）使用嵌段共聚物从金属盐形成金属纳米粒子; 和（b）通过金属纳米颗粒与水的氧化反应将金属纳米颗粒暴露于水以产生氢，其制氢方法的特征在于使用嵌段共聚物胶束法，该嵌段共聚物胶束法包括形成 通过使嵌段共聚物通过自组装形成胶束并在步骤（a）中将选自铁（Fe），镍（Ni）和钴（Co）的金属盐添加到胶束中， 。 该方法包括在将嵌段共聚物溶解在溶剂中时通过自组装形成胶束。 嵌段共聚物是选自聚（苯乙烯 - 嵌段-4-乙烯基吡啶），聚（苯乙烯 - 嵌段-2-乙烯基吡啶），聚（苯乙烯 - 嵌段 - 环氧乙烷），聚（苯乙烯嵌段） - 甲基丙烯酸）和聚（苯乙烯 - 嵌段 - 丙烯酸）。 溶剂是选自水，甲苯，N，N-二甲基甲酰胺，乙酸乙酯，二氯甲烷，氯仿，丙酮，二甲基亚砜，N-甲基吡咯烷酮，二恶烷，四氢呋喃，甲基乙基酮，乙腈，甲醇和 乙醇。 此外，金属盐是乙酸盐或氯化物盐。
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公开(公告)号：KR1020100033263A
公开(公告)日：2010-03-29
申请号：KR1020080092351
申请日：2008-09-19
Applicant: 한국과학기술원
CPC classification number: C01B32/168 , B01J19/12 , B82B3/0009 , B82Y40/00 , C01B2202/36
Abstract: PURPOSE: A diameter control method of a carbon nanotube using a template is provided to insure convenience of a process by selectively removing a metal on the outer surface of the template before growing the carbon nanotube. CONSTITUTION: A diameter control method of a carbon nanotube comprises the following steps: doping a metal precursor on a template; reducing the precursor by heat-treating under the hydrogen atmosphere; removing a metal on the outer surface of the template by processing with nitrogen plasma; and growing the carbon nanotube by providing methane gas. The template is an organic silica mesoporous template. The metal precursor is transition metal salt.
Abstract translation: 目的：提供使用模板的碳纳米管的直径控制方法，以便在生长碳纳米管之前通过选择性去除模板外表面上的金属来确保方法的便利。 构成：碳纳米管的直径控制方法包括以下步骤：在模板上掺杂金属前体; 在氢气氛下热处理减少前体; 通过用氮等离子体处理去除模板外表面上的金属; 并通过提供甲烷气体生长碳纳米管。 该模板是有机二氧化硅介孔模板。 金属前体是过渡金属盐。
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公开(公告)号：KR100794386B1
公开(公告)日：2008-01-15
申请号：KR1020060106741
申请日：2006-10-31
Applicant: 한국과학기술원
CPC classification number: B82Y40/00 , B01J21/185 , B01J23/75 , B01J23/755 , B01J37/0203 , B01J37/16 , B82Y30/00 , C01B3/0021 , C01B32/162 , H01J1/304 , H01J9/025 , H01J2201/30449 , H01J2201/30469 , Y02E60/325 , B82B3/0009 , C01B32/168
Abstract: A method for manufacturing a transition metal-carbon nanotube hybrid material is provided to produce the hybrid material simply by the medium of nitrogen having high reactivity present within carbon nanotubes even without using a separate surface treatment or an inhibitor. A method for manufacturing a transition metal-carbon nanotube hybrid material includes a step of reducing a transition metal by a reduction reaction within a solution comprising nitrogen-containing carbon nanotubes and a transition metal salt. A nitrogen content in the carbon nanotubes is 0.01-20at%. A solvent forming the solution is polyol. The transition metal salt is an acetate or chloride salt. The nitrogen-containing carbon nanotubes are prepared by reacting hydrocarbon gas with nitrogen gas in the presence of a metal catalyst by plasma chemical vapor deposition.
Abstract translation: 提供了制造过渡金属 - 碳纳米管混合材料的方法，即使不使用单独的表面处理或抑制剂，也可以简单地通过在碳纳米管内具有高反应性的氮的介质来制备杂化材料。 制造过渡金属 - 碳纳米管混合材料的方法包括通过在含氮碳纳米管和过渡金属盐的溶液中还原反应来还原过渡金属的工序。 碳纳米管中的氮含量为0.01-20％。 形成溶液的溶剂是多元醇。 过渡金属盐是乙酸盐或氯化物盐。 含氮碳纳米管通过等离子体化学气相沉积在金属催化剂存在下使烃气与氮气反应来制备。
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