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Title: Hydrothermal Atomic Force Microscopy Investigation of Barite Growth: Role of Spectator Ions in Elementary Step Edge Growth Kinetics and Hillock Morphology [Plus Supporting Information]

Abstract

In this paper to better understand the role of spectator ions in barite growth, the kinetics of step edge growth on barite (001) surfaces were studied under various salt solutions. Hydrothermal atomic force microscopy (HAFM) was used to investigate the effect of background electrolytes (NaCl, NaBr, and NaNO 3) as a function of saturation index and ionic strength ( I) on barite growth sourced at dislocations at 108 °C. Results demonstrate that hillock morphology is affected by I, as well as type of anion, where the prevalence of steps aligned on the [010] direction is highest under Cl . There is a modest increase in kinetic coefficient of 55–130% with a 10-fold increase in I for each salt. In comparing the kinetic coefficients of the salts at low ionic strength (0.01 M), there is a moderate difference, suggesting that the anion may play a role in barium attachment.

Authors:
 [1];  [1]; ORCiD logo [2]; ORCiD logo [1]
  1. Wright State Univ., Dayton, OH (United States)
  2. Wright State Univ., Dayton, OH (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1399228
Alternate Identifier(s):
OSTI ID: 1461407
Grant/Contract Number:  
[AC05-00OR22725; AC02-06CH11357]
Resource Type:
Accepted Manuscript
Journal Name:
Crystal Growth and Design
Additional Journal Information:
[ Journal Volume: 17; Journal Issue: 11]; Journal ID: ISSN 1528-7483
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Jindra, Sarah A., Bertagni, Angela L., Bracco, Jacquelyn N., and Higgins, Steven R. Hydrothermal Atomic Force Microscopy Investigation of Barite Growth: Role of Spectator Ions in Elementary Step Edge Growth Kinetics and Hillock Morphology [Plus Supporting Information]. United States: N. p., 2017. Web. doi:10.1021/acs.cgd.7b01198.
Jindra, Sarah A., Bertagni, Angela L., Bracco, Jacquelyn N., & Higgins, Steven R. Hydrothermal Atomic Force Microscopy Investigation of Barite Growth: Role of Spectator Ions in Elementary Step Edge Growth Kinetics and Hillock Morphology [Plus Supporting Information]. United States. doi:10.1021/acs.cgd.7b01198.
Jindra, Sarah A., Bertagni, Angela L., Bracco, Jacquelyn N., and Higgins, Steven R. Mon . "Hydrothermal Atomic Force Microscopy Investigation of Barite Growth: Role of Spectator Ions in Elementary Step Edge Growth Kinetics and Hillock Morphology [Plus Supporting Information]". United States. doi:10.1021/acs.cgd.7b01198. https://www.osti.gov/servlets/purl/1399228.
@article{osti_1399228,
title = {Hydrothermal Atomic Force Microscopy Investigation of Barite Growth: Role of Spectator Ions in Elementary Step Edge Growth Kinetics and Hillock Morphology [Plus Supporting Information]},
author = {Jindra, Sarah A. and Bertagni, Angela L. and Bracco, Jacquelyn N. and Higgins, Steven R.},
abstractNote = {In this paper to better understand the role of spectator ions in barite growth, the kinetics of step edge growth on barite (001) surfaces were studied under various salt solutions. Hydrothermal atomic force microscopy (HAFM) was used to investigate the effect of background electrolytes (NaCl, NaBr, and NaNO3) as a function of saturation index and ionic strength (I) on barite growth sourced at dislocations at 108 °C. Results demonstrate that hillock morphology is affected by I, as well as type of anion, where the prevalence of steps aligned on the [010] direction is highest under Cl–. There is a modest increase in kinetic coefficient of 55–130% with a 10-fold increase in I for each salt. In comparing the kinetic coefficients of the salts at low ionic strength (0.01 M), there is a moderate difference, suggesting that the anion may play a role in barium attachment.},
doi = {10.1021/acs.cgd.7b01198},
journal = {Crystal Growth and Design},
number = [11],
volume = [17],
place = {United States},
year = {2017},
month = {9}
}

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