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Synthesis of Thorium Dioxide Nanocrystals by Pyrolysis of a Thorium‐based Metal‐organic Framework

Ting Yu, Zhenghua Qian, Lin Li, Zonghui Lu, Bin Li, Qiang Zhang, Xiaofeng Liu, Hui He, Yanbo Qiao, Ye Guoan

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Abstract

Abstract A new method is demonstrated for synthesizing thorium dioxide (ThO 2 ) nanoparticles (NPs) by thermal decomposition of an undiscovered thorium‐based metal‐organic framework (MOF). Upon heating at 520 °C, the thorium‐based MOF crystals, designated Th‐MTB, are converted completely to ThO 2 NPs with an average size of 150 nm. The MOF‐derived ThO 2 NPs are easily sintered to form ThO 2 ceramics which have good thermal conductivity. The crystalline grains of ThO 2 grow continuously during sintering.The method for the synthesis of ThO 2 NPs could have potential applications in the production of nuclear materials.

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What this paper is about

Abstract A new method is demonstrated for synthesizing thorium dioxide (ThO 2 ) nanoparticles (NPs) by thermal decomposition of an undiscovered thorium‐based metal‐organic framework (MOF). Upon heating at 520 °C, the thorium‐based MOF crystals, designated Th‐MTB, are converted completely to ThO 2 NPs with an average size of 150 nm. The MOF‐derived ThO 2 NPs are easily sintered to form ThO 2 ceramics which have good thermal conductivity. The crystalline grains of ThO 2 grow continuously during sintering.The method for the synthesis of ThO 2 NPs could have potential applications in the production of nuclear materials.

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Available abstract

Abstract A new method is demonstrated for synthesizing thorium dioxide (ThO 2 ) nanoparticles (NPs) by thermal decomposition of an undiscovered thorium‐based metal‐organic framework (MOF). Upon heating at 520 °C, the thorium‐based MOF crystals, designated Th‐MTB, are converted completely to ThO 2 NPs with an average size of 150 nm. The MOF‐derived ThO 2 NPs are easily sintered to form ThO 2 ceramics which have good thermal conductivity. The crystalline grains of ThO 2 grow continuously during sintering.The method for the synthesis of ThO 2 NPs could have potential applications in the production of nuclear materials.

Key concepts: Thorium, Thorium dioxide, Materials science, Thermal decomposition, Decomposition, Nanocrystal, Sintering, Ceramic

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