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Science | AAAS
https://www.science.org › doi
Atomically dispersed hexavalent iridium oxide from MnO2
The key to the successful synthesis of Ir VI-ado was the introduction of MnO 2 as an oxidant to oxidize tetravalent iridium (Ir IV) to hexavalent Ir VI, a process that was accompanied by ligand …
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ScienceDirect
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Confined Ir single sites with triggered lattice oxygen redox: Toward ...
2021年8月18日 · Ir–MnO 2 thus presented a promising low overpotential (218 mV @10 mA cm −2 in 0.5 M H 2 SO 4) and quite impressive TOF (7.7 s −1) at an overpotential of 300 mV. …
- 作者: Zhaoping Shi, Zhaoping Shi, Ying Wang, Ji Li, Xian Wang, Xian Wang, Yibo Wang, Yibo Wang, Yang Li, Y...
- Publish Year: 2021
Nature
https://www.nature.com › articles
Tensile straining of iridium sites in manganese oxides for proton ...
2024年1月2日 · Herein, we present a low-iridium electrocatalyst in which tensile-strained iridium atoms are localized at manganese-oxide surface cation sites (TS-Ir/MnO2) for high and …
- 作者: Hui Su
MnO2 Ir 的视频

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MnO2 oxidation reaction|| solved questions
2020年7月14日
YouTubeChemicos Academy
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Oxidation Number of Manganese in MnO2 ?
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YouTubechemistNATE
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How to find the Oxidation Number for Mn in the MnO2 2- ion. (Manganate ion)
已浏览 2.5万次2019年9月23日
YouTubeWayne Breslyn (Dr. B.)
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How to find the Oxidation Number for Mn in MnO2
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YouTubeWayne Breslyn (Dr. B.)
ACS Publications
https://pubs.acs.org › doi
Rational Design of β-MnO2 via Ir/Ru Co-substitution for Enhanced …
2025年1月17日 · Here, we combine density functional theory (DFT) calculations with experimental validation to enhance the activity and stability of β-MnO 2 via co-substitution with ruthenium …
Wiley Online Library
https://onlinelibrary.wiley.com › doi › full
Strain‐Induced Electronic Structure Modulation on …
2023年10月16日 · Here, a strained MnO 2 nanosheet induced by Ir incorporation is developed with optimized electronic structure by a simple hydrothermal method. With the incorporation of Ir, the strain induces elongated Mn ─ O …
知乎专栏
https://zhuanlan.zhihu.com
Nature：MnO2中Ir中心拉伸应变，助力构建高活性和稳 …
2024年3月28日 · 限制在耐酸MnO2中的扭曲的正方形平面(Ir-O4)部分引入的张应变可以增强Ir-O键的共价性，从而提高反应过程中的去质子化能力，并增加键与金属d带的轨道重叠程度。
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Is -MNO 2 a novel IR single site?
In this work, a novel Ir single site embedded in γ-MnO 2 (with only 0.87 atom % Ir) is fabricated through a simple thermal decomposition procedure. Benefiting from the locally activated lattice oxygen redox, the as-prepared sample exhibited outstanding electrocatalytic activity and long-term stability, much superior to commercial IrO 2.
Confined Ir single sites with triggered lattice oxygen redox: Toward
sciencedirect.com
Does -MNO 2 occupy the same position as IR-MNO 2?
Specifically, as the structure of Ir–MnO 2 resembles that of γ-MnO 2 based on the results from XRD Rietveld refinements (Table S2; Figure S11), it can be considered that Ir and Mn occupy the same position in the Ir–MnO 2. 36 Figure 1. Characterization of the physical structure of catalysts
Confined Ir single sites with triggered lattice oxygen redox: Toward
sciencedirect.com
What is the electric conductivity of -MNO 2 & IR-MNO 2?
Besides, the electric conductivity was determined to be 5.38 and 5.41 S cm −1 for γ-MnO 2 and Ir–MnO 2, respectively (Figure S20 A), attributable to the similarity in the overall electronic structure of γ-MnO 2 and Ir–MnO 2, which is consistent with the total density of states (DOS) based on DFT calculation (Figure S20 B).
Confined Ir single sites with triggered lattice oxygen redox: Toward
sciencedirect.com
What is the IR loading in TS-IR/MNO 2?
The Ir loading obtained using inductively coupled plasma optical emission spectroscopy (ICP–OES) is approximately 3.9 wt% in TS–Ir/MnO 2. Furthermore, the ICP–OES result shows that the Ir loading is similar in Ir–MnO 2, which is attributed to the same raw material feeding.
Tensile straining of iridium sites in manganese oxides for proton
nature.com
Does -MNO 2 have IR doping?
As the ICP-OES (Table S1) and surface sensitive XPS (Figure S6) characterization reveal similar Ir doping levels, we confirm that Ir is doped into the bulk of γ-MnO 2 homogeneously, rather than sitting on the surface.
Confined Ir single sites with triggered lattice oxygen redox: Toward
sciencedirect.com
Is ts-IR/MNO 2 more gentle than IR-MNO 2?
Clearly, TS–Ir/MnO 2 exhibits the gentlest Tafel slope of 56.6 mV dec −1, which is substantially gentler than those of Ir–MnO 2 (101.2 mV dec −1), MnO 2 (264.7 mV dec −1), and commercial IrO 2 (76.1 mV dec −1) and reveals faster OER kinetics and electron transfer over Ir active sites in TS–Ir/MnO 2 owing to suitably covalent Ir–O bonds.
Tensile straining of iridium sites in manganese oxides for proton
nature.com
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知乎专栏
https://zhuanlan.zhihu.com
中南大学AM：MnO2 NS掺入Ir应变诱导电子调节促进酸性水氧化
2023年10月20日 · 本文采用简单的水热法制备了一种具有优化电子结构的Ir掺杂MnO2纳米片。随着Ir的加入，应变诱导Mn-O键长度拉长，从而调整电子结构，有利于析氧反应 (OER)性能。
RSC Publishing
https://pubs.rsc.org › en › content › articlelanding › se
Ultrasmall Ir nanoclusters on MnO2 nanorods for pH-universal …
Decreasing the size of noble metals and integrating with transition-metal oxides have been proven as effective means to promote Ir-based catalysts for the oxygen evolution reaction (OER). …
X-MOL科学知识平台
https://www.x-mol.com › paper
MnO2-Ir 纳米线：将超小纳米颗粒尺寸、O 空位和低贵金属负载与 …
目前的研究表明，通过在低 Ir 负载（1.2 wt.%）下沉积在 MnO 2纳米线表面上的 1.8 ± 0.7 nm Ir 纳米粒子 (NPs) 可以实现对 ORR 的高催化活性。有趣的是，我们观察到 MnO 2-Ir 纳米杂化物 …
X-MOL科学知识平台
https://www.x-mol.com › paper
<br>通过掺入 Ir 对 MnO2 纳米片进行应变诱导电子 ... - X-MOL
在这里，通过简单的水热方法开发了由Ir掺入引起的应变MnO 2纳米片，其具有优化的电子结构。随着 Ir 的掺入，应变会导致 Mn ─ O 键长延长，从而调整电子结构以有利于析氧反应 (OER) …
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