To　improve　titanium　dioxide　(TiO2)　nanotube　arrays＇　performance　on　dye　sensitized　solar　cells　(DSSCs),　TiO2　nano-capsule　arrays　(TNCP)　have　been　designed　and　prepared　by　planting　TiO2　nanoparticles　into　TiO2　nanotube　(TNT)　using　a　facile　liquid　phase　deposition　(LPD)　route　which　does　not　require　any　special　equipment　and　both　improve　the　specific　surface　area　and　surface　energy　of　TNT　at　low　temperature.　It　has　been　found　that　TiO2　nanoparticles　are　homogeneously　distributed　along　the　wall　of　TNT　and　their　crystal　size　is　calculated　to　be　5-10　nm.　The　obtained　TNCP＇s　specific　surface　area　and　surface　energy　have　been　increased　from　27.1　(for　pure　TNT)　to　33.4　m(2)/g　and　from　67.7　(for　pure　TNT)　to　76.4　mJ/m(2),　respectively.　When　used　as　photo-anodes　of　DSSCs,　TNCP　shows　higher　energy　conversion　efficiency,　which　is　1.7　times　that　of　pure　TNT.　Therefore,　the　present　work　provides　one　effective　strategy　to　better　TNT＇s　performance　on　DSSCs,　which　can　be　assembled　on　metal　substrate　in　large　scale.　(C)　2015　Elsevier　B.V.　All　rights　reserved.