Synthesis and CO2 capture property of high aspect-ratio Li2ZrO3 nanotubes arrays

► High aspect-ratio Li2ZrO3 nanotubes were prepared by hydrothermal method using ZrO2 nanotubes layers as templates. That was not reported before. ► The Li2ZrO3 nanotubes had a uniform morphology, tetragonal structure and high specific surface area. ► Comparing to the nanoparticle or bulk Li2ZrO3, the nanotubal nature gives rise to improve the CO2 capture capacity of the layers. ► The tetragonal crystalline structure and introduction of ZrO2 crystal in the layers were also responsible to their high CO2 capture nature.