巻号一覧
2015 巻 (2015)
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2015 巻, 266 号
選択された号の論文の10件中1～10を表示しています
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巻頭言
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川口 雅之原稿種別: 巻頭言
2015 年 2015 巻 266 号 p. 1
発行日: 2015/01/15
公開日: 2015/02/16
ジャーナル 認証ありPDF形式でダウンロード (358K)
論文
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辻野 凱, 太田 拓, 蒲生西谷 美香, 中川 清晴, 小田 廣和原稿種別: 論文
2015 年 2015 巻 266 号 p. 2-6
発行日: 2015/01/15
公開日: 2015/02/16
ジャーナル フリーCarbon nanotubes (CNTs) and nanofilaments (CNFs) were synthesized by the decomposition of ethylene using oxidized diamond-supported catalysts at a relatively mild temperature. Oxidized diamond is proposed as a novel support material for the catalytic synthesis of CNTs and CNFs. We focused on the inner structure of the CNTs which were synthesized using Ni, Co, Fe, Ni-Fe, Co-Fe, and Ni-Co-loaded oxidized diamond catalysts. The oxidation state of loaded metals in bimetallic catalysts played an important role in producing a more uniform internal structure of the synthesized CNTs. CNFs synthesized over bimetal-loaded oxidized diamond catalysts had different internal structures and fiber axis/graphene layer angles.抄録全体を表示PDF形式でダウンロード (2565K)
ノート
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Yuji Konno, Tomoya Takada, Shigeaki Abe原稿種別: Short Paper
2015 年 2015 巻 266 号 p. 7-10
発行日: 2015/01/15
公開日: 2015/02/16
ジャーナル フリーCarboxylated multi-walled carbon nanotubes (MWCNTs-COOH) were attached to amino-functionalized glass by evaporation of water from an aqueous MWCNT-COOH dispersion. After attachment, MWCNTs-COOH did not detach from the glass despite physical treatments such as sonication and scrubbing with paper. Other combinations without the carboxyl and/or amino groups did not result in a firm attachment; the attachment of MWCNTs-COOH to the glass surface was achieved solely through ionic interaction (-COO- ... +H3N-). Transmittance and electrical resistance measurements suggested that MWCNTs-COOH were bundled through attractive interaction with the MWCNTs-COOH bound to the surface.抄録全体を表示PDF形式でダウンロード (624K)
総説
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稲垣 道夫原稿種別: 総説
2015 年 2015 巻 266 号 p. 11-20
発行日: 2015/01/15
公開日: 2015/02/16
ジャーナル 認証ありA brief review on materials coming after graphene (beyond graphene) is presented mainly by focusing on their preparation: hydrogenated and fluorinated graphene, oxidized graphene, graphyne and graphdiyne, boron nitride, silicene, transition metal dichalcogenides and composite nanosheets. Common strategy for the formation of these materials is to produce 2-dimensional structure composing from single to few layers.抄録全体を表示PDF形式でダウンロード (5609K)
解説
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伊藤 仁, 内村 允宣, 大間 敦史原稿種別: 解説
2015 年 2015 巻 266 号 p. 21-30
発行日: 2015/01/15
公開日: 2015/02/16
ジャーナル 認証ありThe fuel cell electric vehicle (FCEV) is expected to be one of the promising “ZERO” emission vehicles along with the battery electric vehicle. For the commercialization of the FCEV, it is significantly important to reduce the production cost, especially of the catalyst layer. Generally, the catalyst layer is composed mainly of Pt nano-particles and a carbon support, and their structure greatly affects the performance and durability of the fuel cell. For example, a Pt/C catalyst consisting of highly dispersed Pt nanoparticles loaded on a high-surface area carbon support is preferable to achieve a better initial performance, whereas such a catalyst often suffers from poor durability. In order to construct a well-balanced catalyst layer, the design of the carbon support is of essential importance. This review describes the mechanism of carbon corrosion caused by the drive modes of the vehicle in both cathode and anode catalyst layers, together with methods for analysis and characterization. Since these processes are often a bottleneck in the development of the FCEV, we hope that the present review will be helpful to the development and improvement of the technology related to FCEVs.抄録全体を表示PDF形式でダウンロード (2131K) -
松本 泰道, 鯉沼 陸央, 谷口 貴章原稿種別: 解説
2015 年 2015 巻 266 号 p. 31-34
発行日: 2015/01/15
公開日: 2015/02/16
ジャーナル 認証ありGraphene oxide (GO) has many functions, because it has many kinds of functional groups and defects. However, a detailed analysis of the functions and the relationships between the functions and functional groups, has never been made. Here, a detailed analysis of these functions and relationships is given based on our results. The epoxide of GO is unique, and shows a reversible reaction with changing pH. The high proton conductivity of GO is attributed to the presence of epoxide in the interlayers of GO. New types of electrochemical devices such as fuel cells and lead acid batteries where GO is used as a solid proton electrolyte, are proposed. CH defects are also important for the electrode with a high capacitance in supercapacitor and magnetism. GO is also very useful as electrocatalyst substrates because there are both hydrophilic and hydrophobic nano-level areas on the surface.抄録全体を表示PDF形式でダウンロード (803K) -
本山 幸弘, 細川 さとみ原稿種別: 解説
2015 年 2015 巻 266 号 p. 35-40
発行日: 2015/01/15
公開日: 2015/02/16
ジャーナル 認証ありThe easy synthesis of transition metal nanoparticles supported on three types of carbon nanofibers (platelet: CNF-P, tubular: CNF-T, herringbone: CNF-H) and nitrogen-doped CNF-H (N-CNF-H) is accomplished by pyrolysis of metal carbonyl clusters such as Ru3(CO)12, Rh4(CO)12, and Ir4(CO)12, and alkene complexes such as Pd2(dba)3·CHCl3 and Pt(dba)2 [dba: dibenzylideneacetone]. Transmission electron microscopy of these CNFs with immobilized metal nanoparticles (M/CNFs and M/N-CNF-H) showed that metal nanoparticles whose size could be controlled, existed on the CNFs, and that their location was dependent on the surface nanostructure of the CNFs: on the edge of the graphite layers (CNF-P), in the tubes and on the surface (CNF-T), and between the layers and on the edge (CNF-H). Among these M/CNFs, Ru/CNF-P and Rh/CNF-T showed excellent catalytic activity towards arene hydrogenation with high reusability and functional group tolerance, while the Pt/CNF-P behaves as an efficient catalyst for the hydrogenation of substituted nitroarenes to the corresponding aniline derivatives with the other functional groups remaining intact. Pt and Pd nanoparticles supported on N-CNF-H act as poisoning catalysts for the transformation of internal alkynes to (Z)-alkenes over Pd/N-CNF-H, and for the transformation of nitroarenes to the corresponding anilines and N-hydroxylamines over Pt/N-CNF-H.抄録全体を表示PDF形式でダウンロード (670K) -
飯島 孝原稿種別: 解説
2014 年 2015 巻 266 号 p. 41-48
発行日: 2015/01/15
公開日: 2015/02/16
ジャーナル 認証ありWe are focusing on the effects of a porous carbonaceous material as a catalyst support for polymer electrolyte fuel cells (PEFCs). One of the important functions of support is to provide pore structures for gas diffusion into the catalyst layer of PEFCs. The aggregate structure of Ketjenblack (KB) introduces an effective pore structure into the catalyst layer, and provides high performance. By inserting the pore structure into the catalyst layer, even activated carbons without a dendritic structure should have as good a performance as do KB catalysts. Another important feature of the carbon support is the micropores and mesopores inside it. MCND (Mesoporous Carbon Nano-Dendrites) which have a highly-developed dendritic structure and large mesopore volume, shows excellent performance as a catalyst support, especially in the high current region.抄録全体を表示PDF形式でダウンロード (5120K)
学位論文紹介
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石井 孝文原稿種別: 学位論文紹介
2015 年 2015 巻 266 号 p. 49-51
発行日: 2015/01/15
公開日: 2015/02/16
ジャーナル 認証あり炭素のエッジ面の定性・定量は，その炭素の化学的性質だけでなく，構造を議論するうえでも極めて重要である。炭素材料のエッジ面の分析は過去に多くの研究で行われてきた。しかし，高温処理炭素については，そのエッジ面が他の炭素材料（活性炭や炭素繊維など）に比べ極端に少ないため，定量的な分析が困難であり，その量や質を正確に分析した報告はいまだになかった。本論文は高温処理炭素のエッジ面の厳密かつ精密な分析手法を確立し，高温処理炭素をはじめとする様々な炭素材料のエッジ面の姿を明らかにするとともに，そのエッジ面の姿からその炭素構造や化学的性質に関する有用な知見を得ることを目的として行った研究であり，以下の6つの章から構成される。抄録全体を表示PDF形式でダウンロード (363K)
談話室
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白石 壮志原稿種別: 談話室
2015 年 2015 巻 266 号 p. 63-64
発行日: 2015/01/15
公開日: 2015/02/16
ジャーナル 認証ありPDF形式でダウンロード (283K)
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