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Two kinds of novel In 2 O 3 nanotowers were synthesized in an improved chemical vapor deposition (CVD) system through controlling the kinetics factors (saturation ratio). The morphologies and crystalline structures were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). A periodical one-dimensional (1-D) and persistent 0-D growth was proposed to explain the formation of nanotower I, and the formation of nanotower II was ascribed to the alternate 1-D and 0-D growth. The growth mechanism analysis was useful to realize the relation between the kinetics factors and the complex nanostructure. The synthesis of complex tower-shaped structures not only enriched the synthesis science but also provided new blocks in future architecture of functional nanodevices.

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Type II porous liquids are demonstrated to be promise porous materials. However, the category of porous hosts is very limited. Here, a porous host metal–organic polyhedra (MOP‐18) is reported to construct type II porous liquids. MOP‐18 is dissolved into 15‐crown‐5 as an individual cage (5 nm). Both the molecular dynamics simulations and experimental gravimetric CO2 solubility test indicate that the inner cavity of MOP‐18 in porous liquids is unoccupied by 15‐crown‐5 and is accessible to CO2. Thus, the prepared porous liquids show enhanced gas solubility. Furthermore, the prepared porous liquid is encapsulated into graphene oxide (GO) nanoslits to form a GO‐supported porous liquid membrane (GO‐SPLM). Owing to the empty cavity of MOP‐18 unit cages in porous liquids that reduces the gas diffusion barrier, GO‐SPLM significantly enhances the permeability of gas.

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