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Updated: Jul 14, 2025

Author Spotlight: A Rapid, Microwave-Assisted Hydrothermal Synthesis Of Nickel Hydroxide Nanosheets
Published on: August 18, 2023
Development of Novel Decarboxylation-Urea Method toward Interlayer-Anion-Controlled Layered Double Hydroxides
Masahiro Uga1, Yusuke Taniguchi1, Mitsuhiro Matsumoto1
1Department of Chemical Engineering, National Institute of Technology, Nara College, 22 Yata-cho, Yamatokoriyama, Nara 639-1080, Japan.
Abstract:
Layered double hydroxides (LDHs) are representative of a 2D anionic clay. Simple and homogeneous synthesis of interlayer-anion-controlled LDH is essential for studies and industrial production. In this study, we report the one-pot synthesis of an LDH that is selective for interlayer anions, which was labeled as "decarboxylation-urea method". We obtained LDHs intercalated with NO3-, Cl-, and SO42- by removing CO2 in this method. The ionic conductivities of the prepared LDHs were investigated for their applicability to electrolytes, and it was found that Zn-Al LDH intercalated with NO3- showed the highest ionic conductivity (18 mS cm-1). Therefore, the LDH intercalated with NO3- synthesized using the decarboxylation-urea method is promising as an alkaline solid electrolyte.
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