Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

Metal-Ligand Bonds02:51

Metal-Ligand Bonds

20.7K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
20.7K
Properties of Transition Metals02:58

Properties of Transition Metals

25.4K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
25.4K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

26.3K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
26.3K
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide02:44

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

10.1K
Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.
10.1K
Balancing Redox Equations02:58

Balancing Redox Equations

52.0K
Electrochemistry is the science involved in the interconversion of electrical and chemical reactions. Such reactions are called reduction-oxidation, or redox reactions. These important reactions are defined by changes in oxidation states for one or more reactant elements and include a subset of reactions involving the transfer of electrons between reactant species. Electrochemistry as a field has evolved to yield sufficient insights on the fundamental principles of redox chemistry and multiple...
52.0K
Formation of Complex Ions03:45

Formation of Complex Ions

23.6K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
23.6K

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Amide Monomer-Mediated Solubilization Strategy Enables Nonflammable Deep Eutectic Gel Polymer Electrolytes for High-Temperature-Stable Lithium Metal Batteries.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

W<sub>1</sub>/TiO<sub>2-</sub> <sub>x</sub> Enabled Photoelectrochemical Tandem Upgrading of Glycerol to Nucleoside Precursors.

Angewandte Chemie (International ed. in English)·2026
Same author

Correction to "Dense Platinum-Based Intermetallic Nanoparticles Confined into Hollow Mesoporous Carbon for Durable High-Power Heavy-Duty Fuel Cells".

Journal of the American Chemical Society·2026
Same author

Accelerated Tandem Catalysis for Industrial-Level Nitric Oxide Electroreduction to Ammonia.

Angewandte Chemie (International ed. in English)·2026
Same author

Sub-Nanometer PtSn Interlayer Tuning Ligand and Strain Effects Boosts Oxygen Reduction Electrocatalysis.

Angewandte Chemie (International ed. in English)·2026
Same author

Interfacial Water Reorientation in Gadolinium-Doped Ru/RuO<sub>x</sub> Heterostructures Boosts Alkaline Hydrogen Oxidation Electrocatalysis.

Angewandte Chemie (International ed. in English)·2026

関連する実験動画

Updated: Jun 21, 2025

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods
05:41

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods

Published on: February 11, 2016

9.5K

原子層のIROは,リガンド効果を活性化させ,水の酸化電解を促進する.

Heng Luo1, Fangxu Lin1, Qinghua Zhang2

  • 1School of Materials Science and Engineering, Peking University, Beijing 100871, People's Republic of China.

Journal of the American Chemical Society
|July 8, 2024
PubMed
まとめ

研究者は,強化酸素進化反応 (OER) の電気触媒のために,インターメタリックのIrVMnナノ粒子に超薄のイリジウム酸化物 (IrO2) 層を開発した. この設計は効率的なエネルギー変換に不可欠な触媒活動と安定性を改善します.

さらに関連する動画

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
10:52

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics

Published on: April 12, 2019

12.8K
Reaction Kinetics and Combustion Dynamics of I4O9 and Aluminum Mixtures
09:16

Reaction Kinetics and Combustion Dynamics of I4O9 and Aluminum Mixtures

Published on: November 7, 2016

10.8K

関連する実験動画

Last Updated: Jun 21, 2025

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods
05:41

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods

Published on: February 11, 2016

9.5K
Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
10:52

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics

Published on: April 12, 2019

12.8K
Reaction Kinetics and Combustion Dynamics of I4O9 and Aluminum Mixtures
09:16

Reaction Kinetics and Combustion Dynamics of I4O9 and Aluminum Mixtures

Published on: November 7, 2016

10.8K

科学分野:

  • 材料科学
  • 電気化学
  • カタリシス

背景:

  • 酸素進化反応 (OER) はエネルギー変換技術にとって極めて重要です.
  • イリジウムベースの材料は有望なOER電触媒ですが,その効率は活性IrO2層の形成によって制限されています.
  • これらのIrO2層の厚さや性質を制御することは困難です.

研究 の 目的:

  • 超薄いIrO2層のin situ形成を誘導するインターメタリックIrVMnナノ粒子を設計し,合成する.
  • O-IrVMn/IrO2システムにおける電子相互作用と表面再構築のダイナミクスを調査する.
  • OERのO-IrVMn/IrO2触媒の電解性能と安定性を評価する.

主な方法:

  • インターメタリックIrVMnナノ粒子の合成
  • エッジに近いX線吸収スペクトル (XANES) と拡張X線吸収微細構造 (EXAFS) を用いたインシトの特徴化.
  • 表面分析のためのX線光電子光譜 (XPS)
  • 理論的検証のための密度関数理論 (DFT) 計算.

主要な成果:

  • O-IrVMn/IrO2触媒は,より低いIr酸化状態と不飽和酸素調整を有する超薄のIrO2層を示した.
  • 10 mA cm-2で279 mVの超電位と2.3 A mg-1の質量活動で優れたOER性能を達成した.
  • 不規則な触媒と比較して,Ir溶解が著しく減少した優れた触媒の安定性を示した.

結論:

  • インターメタリックのIrVMn戦略は,超薄のIrO2層の形成を効果的に誘導し,OERのリガンド効果を高めます.
  • O-IrVMn/IrO2のオーダーされた原子配列は,金属の浸出を最小限に抑え,活性部位を安定させます.
  • このアプローチは,非常に活発で安定したIrベースのOER電触媒を開発するための有望な経路を提供します.