【公開日：2023.08.01】【最終更新日：2023.05.29】
課題データ / Project Data
課題番号 / Project Issue Number
22NU0215
利用課題名 / Title
Electrochemical CO2 Reduction
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）加工・デバイスプロセス/Nanofabrication（副 / Sub）-
【重要技術領域 / Important Technology Area】（主 / Main）マテリアルの高度循環のための技術/Advanced materials recycling technologies（副 / Sub）-
キーワード / Keywords
Single metal atom catalysts (SACs), N-doped carbon matrix, Lignin
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)
中村 真季
所属名 / Affiliation
名古屋大学大学院工学研究科
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
利用形態 / Support Type
（主 / Main）機器利用/Equipment Utilization（副 / Sub）-
利用した主な設備 / Equipment Used in This Project
NU-228：走査型電子顕微鏡
NU-207：X線光電子分光装置
NU-205：3元マグネトロンスパッタ装置
報告書データ / Report
概要（目的・用途・実施内容）/ Abstract (Aim, Use Applications and Contents)
In this study, we report biomass-derived Ni single-atom catalyst supported on N-doped carbon (NiSA-NC) with high selectivity for CO2R to CO. The resulting biomass-derived Ni-SAC manifests a high CO faradaic efficiency (FE) of 98.2 % in 0.1 M KHCO3 electrolyte.
実験 / Experimental
1. NU-228 Scanning Electron Microscope; SEM (Hitachi High-Technologies Corporation), S-4300 for Observation of the morphology of catalyst with various magnifications.2. NU-207 X-ray photoelectron spectrometer (Thermo Fisher Scientific), ESCALAB250Xi for analyzing elemental composition and electronic structure of N 1s and Ni 2p.3. NU-205 (3元ﾏｸﾞﾈﾄﾛﾝｽﾊﾟｯﾀ装置) was used to add silver nanoparticles catalyst onto the surface of carbon paper electrode (Figure 3).
結果と考察 / Results and Discussion
From SEM images (Figure 1), we could verify the irregular porous morphology of lignin-derived Ni single-atom catalysts that can see the porous structure of Ni single-atom nitrogen-doped on carbon derived from lignin at various nickel content.In XPS results (Figure 2) show that the atomically dispersed Ni sites can be determined more precisely by focusing on the N 1s and Ni 2p spectra of lignin-derived carbon structure varied different nickel loading content compared to the nitrogen-doped carbon without nickel. The N 1s spectrum was deconvoluted into five peaks corresponding to pyridinic N (∼398 eV), M–Nx (∼399.7 eV), pyrrolic N (∼400.8 eV), quaternary N (∼402.2 eV), and oxidized N (∼404.9 eV).
図・表・数式 / Figures, Tables and Equations
Figure 1. SEM images of Ni-single atom catalysts.
Figure 2. XPS spectra of N 1s and Ni 2p of Ni-single atom catalysts.
Figure 3. Silver nanoparticles catalyst onto the surface of carbon paper substrate.
その他・特記事項（参考文献・謝辞等） / Remarks(References and Acknowledgements)
なし。
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