Formation of three-dimensional bicontinuous structures via molten salt dealloying studied in real-time by in situ synchrotron X-ray nano-tomography.

Nature Communications
Xiaoyang LiuYu-Chen Karen Chen-Wiegart

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.

References

Mar 22, 2001·Nature·J ErlebacherK Sieradzki
Jun 22, 2005·Journal of Synchrotron Radiation·B Ravel, M Newville
Oct 13, 2006·Nano Letters·Juergen BienerFarid F Abraham
May 7, 2010·Physical Chemistry Chemical Physics : PCCP·John J RehrKevin Jorissen
Jun 28, 2011·Physical Review Letters·J Erlebacher
Jun 25, 2013·ACS Nano·Zhen Qi, Jörg Weissmüller
Aug 27, 2013·Nature Materials·Qing Chen, Karl Sieradzki
Sep 2, 2014·Journal of Synchrotron Radiation·Dogˇa GürsoyChris Jacobsen
Nov 20, 2015·Nature Communications·Pierre-Antoine GeslinAlain Karma
Sep 5, 2017·ACS Applied Materials & Interfaces·Chonghang ZhaoYu-Chen Karen Chen-Wiegart
Jan 11, 2018·Nature Communications·Dakota E McCoyRichard O Prum
Jul 31, 2019·Nature Materials·Matteo StefanoniBernhard Elsener
Mar 11, 2020·Journal of Synchrotron Radiation·Mingyuan Ge, Wah Keat Lee
Mar 28, 2020·ACS Applied Materials & Interfaces·Arthur RonneYu-Chen Karen Chen-Wiegart
May 10, 2020·Journal of Synchrotron Radiation·Stephen AntonelliXianghui Xiao

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Citations

Oct 29, 2021·Advanced Science·Handong JiaoDaining Fang

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