ZnSn(OH)6　nanocubes　(ZHS)　were　synthesized　by　solvothermal　method　and　then　characterized　by　X-ray　diffraction　(XRD),　UV-vis　diffuse　reflectance　spectroscopy　(UV-vis　DRS),　N2　sorption　(BET　surface　area),　transmission　electron　microscopy　(TEM),　and　scanning　electron　microscopy　(SEM).　Photocatalytic　reforming　of　ethanol　for　H2　production　over　ZHS　samples　were　investigated　and　compared　under　different　reaction　conditions.　The　results　indicated　that　the　cubes　were　formed　by　the　adsorption　of　small　irregular　ZHS　particles　via　the　Ostwald　ripening　process.　ZHS　showed　high　photoactivity　for　reforming　ethanol　to　H2　and　CH4.　The　H2　evolution　rate　of　ZHS　was　found　more　susceptible　to　the　crystallinity　of　the　samples　than　the　surface　area,　and　could　be　significantly　enhanced　by　loading　with　Pt.　©　2010　Professor　T.　Nejat　Veziroglu.　Published　by　Elsevier　Ltd.　All　rights　reserved.