Manganese(ii) phosphate nanosheet assembly with native out-of-plane Mn centres for electrocatalytic water oxidation†,Chemical Science

当前位置： X-MOL 学术 › Chem. Sci. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Manganese(ii) phosphate nanosheet assembly with native out-of-plane Mn centres for electrocatalytic water oxidation†
Chemical Science ( IF 7.6 ) Pub Date : 2018-10-02 00:00:00 , DOI: 10.1039/c8sc03764g
Hongfei Liu ₁ , Xueqing Gao ₁ , Xiaolong Yao ₂ , Mingxing Chen ₃ , Guojun Zhou ₁ , Jing Qi ₁ , Xueli Zhao ₁ , Weichao Wang ₂ , Wei Zhang ₁ , Rui Cao _{1,

3}

Affiliation

Nature selects Mn-clusters as catalysts for water oxidation, which is a significant reaction in photosynthesis. Thus, it is of critical importance to develop Mn-based superstructures and study their catalytic details for water-splitting-based renewable energy research. Herein, we report a manganese(II) phosphate nanosheet assembly with asymmetric out-of-plane Mn centers from the transformation of amine-intercalated nanoplates for efficient electrocatalytic water oxidation in neutral aqueous solutions. From structural and computational studies, it is found that the native out-of-plane Mn centers with terminal water ligands are accessible and preferential oxidation sites to form active intermediates for water oxidation. In addition, the asymmetry can stabilize the key Mn^III intermediate, as demonstrated by electrochemical and spectrometric studies. This study delivers a convenient strategy to prepare unique nanosheet assemblies for electrocatalysis and fundamental understandings of oxygen evolution chemistry.

中文翻译：

用于电催化水氧化的具有天然面外 Mn 中心的磷酸锰 (ii) 纳米片组件†

大自然选择锰簇作为水氧化的催化剂，这是光合作用中的一个重要反应。因此，开发锰基超结构并研究其催化细节对于基于水分解的可再生能源研究至关重要。在此，我们报告了一种具有不对称面外 Mn 中心的磷酸锰 ( II ) 纳米片组件，该组件来自胺插层纳米板的转化，用于在中性水溶液中进行有效的电催化水氧化。从结构和计算研究中发现，具有末端水配体的天然平面外 Mn 中心是可接近的，并且优先氧化位点以形成水氧化的活性中间体。此外，不对称性可以稳定关键的 Mn ^III中间体，如电化学和光谱研究所证明的那样。这项研究提供了一种方便的策略来制备独特的纳米片组件，用于电催化和对析氧化学的基本理解。

更新日期：2018-10-02

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11