Carbonate-assisted transformation of manganese silicate nanoparticles via solid-to-hollow structural transition

作者：Zhang, Ye; Gu, Zhengying^*; Hu, Wenli; Li, Shumin; Yao, Yining; Yu, Chengzhong^*

来源：Microporous and Mesoporous Materials, 2023, 354: 112560.

DOI：10.1016/j.micromeso.2023.112560

• Bubble-like manganese silicate
• Solid-to-hollow conversion
• Thermal decomposition

The bubble-like manganese silicate nanoparticles with a diameter of-10 nm have attracted much attention in diverse applications, however their formation mechanisms are under debate. Herein, we revisit the formation of bubble-like manganese silicate nanoparticles and demonstrate a solid-to-hollow conversion process. The solid MnxOy(CO3)mSiz as an intermediate is formed during hydrothermal reaction. The thermal decomposition of MnxOy(CO3)mSiz leads to the solid to hollow structure transformation. Finally, bubble-like manganese silicate nanoparticles are formed. These findings are expected to provide insights in designing other hollow metal silicate nanoparticles.