Formation of three-dimensional bicontinuous structures via molten salt dealloying studied in real-time by in situ synchrotron X-ray nano-tomography
Abstract
Three-dimensional bicontinuous porous materials formed by dealloying contribute significantly to various applications including catalysis, sensor development and energy storage. This work studies a method of molten salt dealloying via real-time in situ synchrotron three-dimensional X-ray nano-tomography. Quantification of morphological parameters determined that long-range diffusion is the rate-determining step for the dealloying process. The subsequent coarsening rate was primarily surface diffusion controlled, with Rayleigh instability leading to ligament pinch-off and creating isolated bubbles in ligaments, while bulk diffusion leads to a slight densification. Chemical environments characterized by X-ray absorption near edge structure spectroscopic imaging show that molten salt dealloying prevents surface oxidation of the metal. In this work, gaining a fundamental mechanistic understanding of the molten salt dealloying process in forming porous structures provides a nontoxic, tunable dealloying technique and has important implications for molten salt corrosion processes, which is one of the major challenges in molten salt reactors and concentrated solar power plants.
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
- OSTI Identifier:
- 1787400
- Alternate Identifier(s):
- OSTI ID: 1809057; OSTI ID: 1819558
- Report Number(s):
- BNL-221827-2021-JAAM
Journal ID: ISSN 2041-1723; 3441; PII: 23598
- Grant/Contract Number:
- SC0012704; AC05-00OR22725; DGE-1922639
- Resource Type:
- Published Article
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Name: Nature Communications Journal Volume: 12 Journal Issue: 1; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United Kingdom
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; corrosion; energy
Citation Formats
Liu, Xiaoyang, Ronne, Arthur, Yu, Lin-Chieh, Liu, Yang, Ge, Mingyuan, Lin, Cheng-Hung, Layne, Bobby, Halstenberg, Phillip, Maltsev, Dmitry S., Ivanov, Alexander S., Antonelli, Stephen, Dai, Sheng, Lee, Wah-Keat, Mahurin, Shannon M., Frenkel, Anatoly I., Wishart, James F., Xiao, Xianghui, and Chen-Wiegart, Yu-chen Karen. Formation of three-dimensional bicontinuous structures via molten salt dealloying studied in real-time by in situ synchrotron X-ray nano-tomography. United Kingdom: N. p., 2021.
Web. doi:10.1038/s41467-021-23598-8.
Liu, Xiaoyang, Ronne, Arthur, Yu, Lin-Chieh, Liu, Yang, Ge, Mingyuan, Lin, Cheng-Hung, Layne, Bobby, Halstenberg, Phillip, Maltsev, Dmitry S., Ivanov, Alexander S., Antonelli, Stephen, Dai, Sheng, Lee, Wah-Keat, Mahurin, Shannon M., Frenkel, Anatoly I., Wishart, James F., Xiao, Xianghui, & Chen-Wiegart, Yu-chen Karen. Formation of three-dimensional bicontinuous structures via molten salt dealloying studied in real-time by in situ synchrotron X-ray nano-tomography. United Kingdom. https://doi.org/10.1038/s41467-021-23598-8
Liu, Xiaoyang, Ronne, Arthur, Yu, Lin-Chieh, Liu, Yang, Ge, Mingyuan, Lin, Cheng-Hung, Layne, Bobby, Halstenberg, Phillip, Maltsev, Dmitry S., Ivanov, Alexander S., Antonelli, Stephen, Dai, Sheng, Lee, Wah-Keat, Mahurin, Shannon M., Frenkel, Anatoly I., Wishart, James F., Xiao, Xianghui, and Chen-Wiegart, Yu-chen Karen. Wed .
"Formation of three-dimensional bicontinuous structures via molten salt dealloying studied in real-time by in situ synchrotron X-ray nano-tomography". United Kingdom. https://doi.org/10.1038/s41467-021-23598-8.
@article{osti_1787400,
title = {Formation of three-dimensional bicontinuous structures via molten salt dealloying studied in real-time by in situ synchrotron X-ray nano-tomography},
author = {Liu, Xiaoyang and Ronne, Arthur and Yu, Lin-Chieh and Liu, Yang and Ge, Mingyuan and Lin, Cheng-Hung and Layne, Bobby and Halstenberg, Phillip and Maltsev, Dmitry S. and Ivanov, Alexander S. and Antonelli, Stephen and Dai, Sheng and Lee, Wah-Keat and Mahurin, Shannon M. and Frenkel, Anatoly I. and Wishart, James F. and Xiao, Xianghui and Chen-Wiegart, Yu-chen Karen},
abstractNote = {Three-dimensional bicontinuous porous materials formed by dealloying contribute significantly to various applications including catalysis, sensor development and energy storage. This work studies a method of molten salt dealloying via real-time in situ synchrotron three-dimensional X-ray nano-tomography. Quantification of morphological parameters determined that long-range diffusion is the rate-determining step for the dealloying process. The subsequent coarsening rate was primarily surface diffusion controlled, with Rayleigh instability leading to ligament pinch-off and creating isolated bubbles in ligaments, while bulk diffusion leads to a slight densification. Chemical environments characterized by X-ray absorption near edge structure spectroscopic imaging show that molten salt dealloying prevents surface oxidation of the metal. In this work, gaining a fundamental mechanistic understanding of the molten salt dealloying process in forming porous structures provides a nontoxic, tunable dealloying technique and has important implications for molten salt corrosion processes, which is one of the major challenges in molten salt reactors and concentrated solar power plants.},
doi = {10.1038/s41467-021-23598-8},
journal = {Nature Communications},
number = 1,
volume = 12,
place = {United Kingdom},
year = {Wed Jun 09 00:00:00 EDT 2021},
month = {Wed Jun 09 00:00:00 EDT 2021}
}
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