Mesporous　hollow　semiconducting　materials　have　received　much　attention　in　recent　years　owing　to　their　unique　chemico-physical　properties　for　applications　in　many　fields.　Herein,　we　firstly　report　a　green,　rapid,　one-step　route　towards　the　facile　fabrication　of　mesporous　Ag2O　nanotube　via　plasma　etching　of　corresponding　silver　nanowire　templates.　Characterization　by　X-ray　diffraction　(XRD),　fieldemission　scanning　electron　microscopy　(FESEM),　transmission　electron　microscopy　(TEM)　and　high　resolution　transmission　electron　microscopy　(HRTEM)　techniques　indicates　that　phase　pure　cubic　Ag2O　nanotube　with　mesporous　structure　were　formed.　Time-independent　experiments　demonstrate　Kirken-dall　effect　involved　in　forming　hollow　structure　at　nanoscale　in　solid-gas　reaction.　This　green　and　simple　strategy　is　expected　to　be　extended　for　the　rapid　fabrication　of　similar　hollow　metal-oxide　nanostructure　and　device.　(C)　2014　Elsevier　B.V.　All　rights　reserved.