skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Effect of Zn coprecipitation on the structure of layered Mn oxides

Abstract

Mn oxides (MnOx) are a group of ubiquitous metal oxides in the environment and can significantly affect the biogeochemical cycles of metals, nutrients, and contaminants. Due to their negative surface charge across a wide range of environmental conditions, metal cations have strong affinities for MnOx, and the presence of metal cations during or after the formation of MnO x might significantly affect their structure and reactivity. This study systematically investigates the effects of Zn 2+ presence during mineral formation (i.e. coprecipitation) on the structure of acid birnessite and delta-MnO 2, two synthetic analogs that are structurally similar to fresh biogenic MnO x but with different crystallinity. For both acid birnessite and delta-MnO 2, Zn 2+ existed as surface adsorbed species at vacancy sites, interrupted layer stacking along c axis, and caused reductions of the lateral particle size. Zn 2+ also reduced Mn(III) contents in delta-MnO 2 layers, leaving more vacancy sites (capped by adsorbed Zn 2+). The reduction of layer stacking was more obvious for acid birnessite, while the modification of layer structure was more significant for delta-MnO 2. These structural changes will likely lead to modified reactivity of MnO x in natural systems.

Authors:
 [1];  [2];  [3];  [4];  [5];  [5];  [5];  [3];  [2];  [5]
  1. Georgia Inst. of Technology, Atlanta, GA (United States). School of Earth and Atmospheric Sciences
  2. Univ. of Wyoming, Laramie, WY (United States). Dept. of Ecosystem Science and Management
  3. Univ. of Houston, Houston, TX (United States). Dept. of Physics and Texas Center for Superconductivity
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  5. Georgia Inst. of Technology, Atlanta, GA (United States). School of Earth and Atmospheric Sciences
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Aeronautic and Space Administration (NASA); National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division
OSTI Identifier:
1483988
Grant/Contract Number:  
[AC02-06CH11357; AC02-76SF00515; 1710285; NNA15BB03A; EAR-1529937]
Resource Type:
Accepted Manuscript
Journal Name:
Chemical Geology
Additional Journal Information:
[ Journal Volume: 493]; Journal ID: ISSN 0009-2541
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; 36 MATERIALS SCIENCE; Birnessite; Coprecipitation; Manganese oxide; Structure; Zinc

Citation Formats

Zhao, Shiliang, Wang, Qian, Sun, Jingying, Borkiewicz, Olaf J., Huang, Rixiang, Saad, Emily M., Fields, Benjamin, Chen, Shuo, Zhu, Mengqiang, and Tang, Yuanzhi. Effect of Zn coprecipitation on the structure of layered Mn oxides. United States: N. p., 2018. Web. doi:10.1016/j.chemgeo.2018.05.044.
Zhao, Shiliang, Wang, Qian, Sun, Jingying, Borkiewicz, Olaf J., Huang, Rixiang, Saad, Emily M., Fields, Benjamin, Chen, Shuo, Zhu, Mengqiang, & Tang, Yuanzhi. Effect of Zn coprecipitation on the structure of layered Mn oxides. United States. doi:10.1016/j.chemgeo.2018.05.044.
Zhao, Shiliang, Wang, Qian, Sun, Jingying, Borkiewicz, Olaf J., Huang, Rixiang, Saad, Emily M., Fields, Benjamin, Chen, Shuo, Zhu, Mengqiang, and Tang, Yuanzhi. Thu . "Effect of Zn coprecipitation on the structure of layered Mn oxides". United States. doi:10.1016/j.chemgeo.2018.05.044. https://www.osti.gov/servlets/purl/1483988.
@article{osti_1483988,
title = {Effect of Zn coprecipitation on the structure of layered Mn oxides},
author = {Zhao, Shiliang and Wang, Qian and Sun, Jingying and Borkiewicz, Olaf J. and Huang, Rixiang and Saad, Emily M. and Fields, Benjamin and Chen, Shuo and Zhu, Mengqiang and Tang, Yuanzhi},
abstractNote = {Mn oxides (MnOx) are a group of ubiquitous metal oxides in the environment and can significantly affect the biogeochemical cycles of metals, nutrients, and contaminants. Due to their negative surface charge across a wide range of environmental conditions, metal cations have strong affinities for MnOx, and the presence of metal cations during or after the formation of MnOx might significantly affect their structure and reactivity. This study systematically investigates the effects of Zn2+ presence during mineral formation (i.e. coprecipitation) on the structure of acid birnessite and delta-MnO2, two synthetic analogs that are structurally similar to fresh biogenic MnOx but with different crystallinity. For both acid birnessite and delta-MnO2, Zn2+ existed as surface adsorbed species at vacancy sites, interrupted layer stacking along c axis, and caused reductions of the lateral particle size. Zn2+ also reduced Mn(III) contents in delta-MnO2 layers, leaving more vacancy sites (capped by adsorbed Zn2+). The reduction of layer stacking was more obvious for acid birnessite, while the modification of layer structure was more significant for delta-MnO2. These structural changes will likely lead to modified reactivity of MnOx in natural systems.},
doi = {10.1016/j.chemgeo.2018.05.044},
journal = {Chemical Geology},
number = ,
volume = [493],
place = {United States},
year = {2018},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

Save / Share: