【公開日：2024.07.25】【最終更新日：2024.06.22】
課題データ / Project Data
課題番号 / Project Issue Number
23NU0029
利用課題名 / Title
SWCNTなどのカーボン系材料で形成されたエネルギデバイスの材料観察や構造解析
利用した実施機関 / Support Institute
名古屋大学 / Nagoya Univ.
機関外・機関内の利用 / External or Internal Use
内部利用（ARIM事業参画者以外）/Internal Use (by non ARIM members)
技術領域 / Technology Area
【横断技術領域 / Cross-Technology Area】（主 / Main）計測・分析/Advanced Characterization（副 / Sub）-
【重要技術領域 / Important Technology Area】（主 / Main）革新的なエネルギー変換を可能とするマテリアル/Materials enabling innovative energy conversion（副 / Sub）次世代ナノスケールマテリアル/Next-generation nanoscale materials
キーワード / Keywords
SWCNT, エネルギーデバイス,燃料電池/ Fuel cell,太陽電池/ Solar cell,電子顕微鏡/ Electronic microscope,ナノカーボン/ Nano carbon
利用者と利用形態 / User and Support Type
利用者名（課題申請者）/ User Name (Project Applicant)
松尾 豊
所属名 / Affiliation
名古屋大学工学研究科 化学システム工学専攻
共同利用者氏名 / Names of Collaborators in Other Institutes Than Hub and Spoke Institutes
ARIM実施機関支援担当者 / Names of Collaborators in The Hub and Spoke Institutes
樋口公孝
利用形態 / Support Type
（主 / Main）共同研究/Joint Research（副 / Sub）-
利用した主な設備 / Equipment Used in This Project
NU-102：高分解能電子状態計測走査透過型電子顕微鏡システム
報告書データ / Report
概要（目的・用途・実施内容）/ Abstract (Aim, Use Applications and Contents)
Noble metals such as Platinum and Palladium have been proving its high performance and application potential in various fields. However, its high price has become one of the main limitations to its application. To deal with this problem, one of the attempts is to synthesize 1-dimensional nanostructure such as nanowires and nanorods to increase its atomic utilization [1]. It’s known that the catalytic performance of the metallic nanostructure is largely influenced by its morphology, composition and structure. Compared with nanoparticles, 1-D nanostructure has many unique characteristics based on its special high-aspect ratio structure such as high surface area, flexible transport properties and potential high capacity of electron transportation due to its anisotropy structure. In this study, we reported the synthesis of PtPd bimetallic nanorods supported on single-walled carbon nanotubes (SWCNT) by solvothermal method. By changing certain experimental parameters, the morphology of product possessed corresponding changes.
実験 / Experimental
H2PtCl6.6H2O (8wt%) aqueous solution, PdCl2 (2.8wt%, HCl 30wt%) aqueous solution, DMF (dehydrated), and ethylene glycol, according to a certain proportion, were mixed together to prepare the precursor. After stirring, SWCNTs was added. Then, the mixture was kept at temperature of 170℃ to react in an autoclave. The products were characterized by TEM, STEM, and EDS (JEM-ARM200F Cold : NU-102). To investigate the influence factors on morphology of the product, several experimental parameters and acid treatment were applied.
結果と考察 / Results and Discussion
Experiments were
conducted with difference HCl-treatment conditions. HCl-treatment
against SWCNT was conducted before solvothermal reaction.
Based
on the experimental results, it can be concluded that using HCl to
make surface treatment on SWCNTs can make the synthesized nanorods
possess longer length (Fig, 1 and Table 1). As the treatment time length goes longer, the
effect on extending length of nanorods is more significant. However,
though at present we’ve got the PtPd@SWCNT with nanorod average
length longer than 30 nm, to spend 14 days to make surface treatment
on SWCNTs is not an efficient method because time cost is also an
important limitation for the application.
The measurement and
calculation result of nanorod parameter from sample 8 h and 4 h (Fig, 2 and Table 2). What
needs to be noted is that a few nanorod was found in the sample of 4
h. one speculated reason is because the reaction time length is only
4 hours, meaning that the reaction is not completed and the amount of
metallic supported nanostructures on SWCNTs is a bit low. Yet the
average length of nanorods still reaches 18.42 nm, already close to
the average nanorod-length of 19.35 nm on typical sample. Meaning
that during the reaction, some nanorods is generated independently
and extend their length as the reaction time goes. But more detailed
information about the influence of time length need to use more
samples to investigate in the future research.
図・表・数式 / Figures, Tables and Equations
Fig.1 TEM images of PtPd@SWCNT: (a) HCl-treatment SWCNTs for 10h, (b) HCl-treatment SWCNTs for 72h, (c) HCl-treatment SWCNTs for 14 days.
Table 1
Fig.2 TEM images of PtPd@SWCNT (A) 8-hour reaction, (B) 4-hour reaction.
Table 2
その他・特記事項（参考文献・謝辞等） / Remarks(References and Acknowledgements)
TEM,STEM,EDS観察は樋口技術職員の支援を受けました。
成果発表・成果利用 / Publication and Patents
論文・プロシーディング（DOIのあるもの） / DOI (Publication and Proceedings)
口頭発表、ポスター発表および、その他の論文 / Oral Presentations etc.
特許 / Patents
特許出願件数 / Number of Patent Applications：0件
特許登録件数 / Number of Registered Patents：0件