Large-Scale Synthesis and Comprehensive Structure Study of δ-MnO2

Inorganic Chemistry
Jue LiuKatharine Page

Abstract

Layered δ-MnO2 (birnessites) are ubiquitous in nature and have also been reported to work as promising water oxidation catalysts or rechargeable alkali-ion battery cathodes when fabricated under appropriate conditions. Although tremendous effort has been spent on resolving the structure of natural/synthetic layered δ-MnO2 in the last few decades, no conclusive result has been reached. In this Article, we report an environmentally friendly route to synthesizing homogeneous Cu-rich layered δ-MnO2 nanoflowers in large scale. The local and average structure of synthetic Cu-rich layered δ-MnO2 has been successfully resolved from combined Mn/Cu K-edge extended X-ray fine structure spectroscopy and X-ray and neutron total scattering analysis. It is found that appreciable amounts (∼8%) of Mn vacancies are present in the MnO2 layer and Cu2+ occupies the interlayer sites above/below the vacant Mn sites. Effective hydrogen bonding among the interlayer water molecules and adjacent layer O ions has also been observed for the first time. These hydrogen bonds are found to play the key role in maintaining the intermediate and long-range stacking coherence of MnO2 layers. Quantitative analysis of the turbostratic stacking disorder in this compo...Continue Reading

References

Aug 22, 2001·Journal of Synchrotron Radiation·M Newville
Mar 21, 2002·Journal of the American Chemical Society·Xun Wang, Yadong Li
Mar 29, 2002·Environmental Science & Technology·Bruce A ManningDonald L Suarez
Feb 18, 2004·Acta Crystallographica. Section A, Foundations of Crystallography·Gábor Oszlányi, András Süto
Jun 22, 2005·Journal of Synchrotron Radiation·B Ravel, M Newville
Aug 24, 2006·Journal of the American Chemical Society·Ian SaratovskyKenneth R Poeppelmeier
Dec 25, 2007·Acta Crystallographica. Section A, Foundations of Crystallography·Gábor Oszlányi, András Süto
Apr 8, 2009·Acta Crystallographica. Section A, Foundations of Crystallography·Christopher L Farrow, Simon J L Billinge
Aug 22, 2007·Journal of Physics. Condensed Matter : an Institute of Physics Journal·C L FarrowS J L Billinge
Oct 1, 2011·Environmental Science & Technology·Richard HarringtonJohn B Parise
Dec 31, 2011·Journal of the American Chemical Society·Toshihiro TakashimaRyuhei Nakamura
Mar 26, 2013·Physical Chemistry Chemical Physics : PCCP·Xiaohao YangSimon J L Billinge
Apr 24, 2013·Journal of the American Chemical Society·Hsiu-Wen WangRick L Paul
Oct 3, 2014·Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials·Sylvain GrangeonMartine Lanson
Nov 18, 2015·Journal of the American Chemical Society·Michael HuynhDaniel G Nocera
Jul 7, 2018·Acta Crystallographica. Section A, Foundations and Advances·Tedi Marie UsherKatharine Page

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