The layered material Rb x Mn x Ti 2-x O 4 (x ) 0.75) was pillared with silica. The Rb ions were first exchanged with n-alkylammonium ions (C n H 2n+1 NH 3 , n ) 6-18) to separate the interlayer space of the titanate, and then tetraethoxysilane was hydrolyzed between the layers. Burning off the organic parts resulted in silica pillared microporous solids with a surface area as large as 500-800 m 2 /g. The porous structure was stable up to 600 °C. Adsorption-desorption isotherms for various vapors, such as water, methanol, toluene, and mesitylene, were measured, which suggested that the porous structure formed between the layers was very similar to those of zeolites and uniform without mesopores. The pores showed hydrophobic properties. Their size was on the order of that of mesitylene.

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Iron fluoride is a kind of high-capacity conversion-type cathode material for lithium-ion batteries (LIBs) and shows attractive practical application potential. However, it still faces many challenges, such as poor electronic conductivity and volume change while cycling. Reducing particle size to nanoscale has been proved to be an effective way to address the poor electronic conductivity and huge volume change of iron fluoride cathodes for LIBs. In this study, a low temperature nanotailoring (LTNT) strategy is proposed to realize the conversion of microsized FeF 3 •3H 2 O to nanosized FeF 3 •0.33H 2 O by one-step treating with the assistance of alcohols. Meanwhile, the particle size and morphology of iron fluorides can be controlled by regulating the processing conditions. When evaluated as a cathode material for LIBs, the as-prepared bare FeF 3 •0.33H 2 O shows a high capacity of 190 mAh g −1 after 50 cycles with excellent rate capability. This LTNT method is applicable to hydrates and even can be extended to easily hydrated compounds.

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