The　present　work　investigates　the　photoelectrochemical　behavior　of　nanotubular　N/C-TiO2　electrode　for　hydrogen　production.　Via　the　sonoelectrochemical　anodization　process　of　1　h,　N-containing　TiO2　based　nanotube　arrays(N-TNT)　with　the　length　of　about　650　nm　were　fabricated　in　fluoride　aqueous　solution　added　0.25　M　NH4NO3;　C-containing　TiO2　based　nanotube　arrays(C-TNT)　with　the　length　of　about　2　mu　m　were　prepared　in　fluoride　ethylene　glycol　solution.　In　virtue　of　the　longer　tubes　with　the　larger　surface　areas,　C-TNT　can　harvest　more　light　and　produce　more　photoactive　sites　than　N-TNT,　which　also　made　the　charge　transfer　resistance　in　C-TNT　larger　than　that　in　N-TNT.　Considered　the　more　negative　flat　band　potential　of　C-TNT,　C-TNT　has　the　smaller　energy　barrier　and　the　better　photoelectrochemical　activity.　It　may　be　attributed　to　the　appropriate　defect　concentration　gradient　owing　to　the　modification　of　C　element.　Under　UV-vis　light　(320-780　nm)　irradiation,　the　average　hydrogen　generation　rate　of　C-TNT　was　282　mu　L　h(-1)　cm(-2).　The　surface　properties　and　near-surface　properties　of　the　resultant　electrode　were　synthetically　analyzed　by　using　UV-vis　diffuse　reflectance　spectra(DRS),　field　emission　scanning　electron　microscopy　(FESEM),　I-t　curves,　and　electrochemical　impedance　spectroscopy　(EIS)　techniques.　Copyright　(C)　2011,　Hydrogen　Energy　Publications,　LLC.　Published　by　Elsevier　Ltd.　All　rights　reserved.