The Effect of Silver Ion Occupancy on Hollandite Lattice Structure

Alexander B. Brady; Jianping Huang; Jessica L. Durham; Paul F. Smith; Jianming Bai; Esther S. Takeuchi; Amy C. Marschilok; Kenneth J. Takeuchi

doi:10.1557/adv.2018.238

The Effect of Silver Ion Occupancy on Hollandite Lattice Structure

Alexander B. Brady
, Jianping Huang
, Jessica L. Durham
, Paul F. Smith
, Jianming Bai
, Esther S. Takeuchi
, Amy C. Marschilok
, Kenneth J. Takeuchi

Stony Brook University
Brookhaven National Laboratory

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

The effect of tunnel cations on tunnel size in α-MnO₂ structured (hollandite, cryptomelane) materials has long been of interest, as the tunnel size effects catalytic and transport properties. Previous research on the tunnel size has focused on potassium cryptomelane (K_xMn₈O₁₆). This paper uses synthetic control of silver content in Ag_xMn₈O₁₆ to investigate the effect that tunnel silver occupancy has on the lattice parameters. Materials with silver (x) content between 1.14 and 1.66 were synthesized, synchrotron diffraction and Rietveld Refinement was used to determine lattice parameters. The lattice parameters were found to contract as silver content increases (from 9.774 Å to 9.738 Å), in contrast to previous investigations of other tunnel cations.

Original language	English
Pages (from-to)	547-552
Number of pages	6
Journal	MRS Advances
Volume	3
Issue number	10
DOIs	https://doi.org/10.1557/adv.2018.238
State	Published - 2018

Keywords

Ag
energy storage
Mn

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10.1557/adv.2018.238

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title = "The Effect of Silver Ion Occupancy on Hollandite Lattice Structure",

abstract = "The effect of tunnel cations on tunnel size in α-MnO2 structured (hollandite, cryptomelane) materials has long been of interest, as the tunnel size effects catalytic and transport properties. Previous research on the tunnel size has focused on potassium cryptomelane (KxMn8O16). This paper uses synthetic control of silver content in AgxMn8O16 to investigate the effect that tunnel silver occupancy has on the lattice parameters. Materials with silver (x) content between 1.14 and 1.66 were synthesized, synchrotron diffraction and Rietveld Refinement was used to determine lattice parameters. The lattice parameters were found to contract as silver content increases (from 9.774 {\AA} to 9.738 {\AA}), in contrast to previous investigations of other tunnel cations.",

keywords = "Ag, energy storage, Mn",

author = "Brady, \{Alexander B.\} and Jianping Huang and Durham, \{Jessica L.\} and Smith, \{Paul F.\} and Jianming Bai and Takeuchi, \{Esther S.\} and Marschilok, \{Amy C.\} and Takeuchi, \{Kenneth J.\}",

note = "Publisher Copyright: {\textcopyright} 2018 Materials Research Society.",

year = "2018",

doi = "10.1557/adv.2018.238",

language = "English",

volume = "3",

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journal = "MRS Advances",

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TY - JOUR

T1 - The Effect of Silver Ion Occupancy on Hollandite Lattice Structure

AU - Brady, Alexander B.

AU - Huang, Jianping

AU - Durham, Jessica L.

AU - Smith, Paul F.

AU - Bai, Jianming

AU - Takeuchi, Esther S.

AU - Marschilok, Amy C.

AU - Takeuchi, Kenneth J.

PY - 2018

Y1 - 2018

N2 - The effect of tunnel cations on tunnel size in α-MnO2 structured (hollandite, cryptomelane) materials has long been of interest, as the tunnel size effects catalytic and transport properties. Previous research on the tunnel size has focused on potassium cryptomelane (KxMn8O16). This paper uses synthetic control of silver content in AgxMn8O16 to investigate the effect that tunnel silver occupancy has on the lattice parameters. Materials with silver (x) content between 1.14 and 1.66 were synthesized, synchrotron diffraction and Rietveld Refinement was used to determine lattice parameters. The lattice parameters were found to contract as silver content increases (from 9.774 Å to 9.738 Å), in contrast to previous investigations of other tunnel cations.

AB - The effect of tunnel cations on tunnel size in α-MnO2 structured (hollandite, cryptomelane) materials has long been of interest, as the tunnel size effects catalytic and transport properties. Previous research on the tunnel size has focused on potassium cryptomelane (KxMn8O16). This paper uses synthetic control of silver content in AgxMn8O16 to investigate the effect that tunnel silver occupancy has on the lattice parameters. Materials with silver (x) content between 1.14 and 1.66 were synthesized, synchrotron diffraction and Rietveld Refinement was used to determine lattice parameters. The lattice parameters were found to contract as silver content increases (from 9.774 Å to 9.738 Å), in contrast to previous investigations of other tunnel cations.

KW - Ag

KW - energy storage

KW - Mn

UR - https://www.scopus.com/pages/publications/85044968664

U2 - 10.1557/adv.2018.238

DO - 10.1557/adv.2018.238

M3 - Article

AN - SCOPUS:85044968664

SN - 2059-8521

VL - 3

SP - 547

EP - 552

JO - MRS Advances

JF - MRS Advances

IS - 10

ER -

The Effect of Silver Ion Occupancy on Hollandite Lattice Structure

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