The electronic structure,adsorption and optical properties of Ptn(n = 1-3) clusters loaded anatase TiO2 nanotube were in-vestigated based on the density functional theory with generalized gradiemt approximation.The TiO2 nanotube was obtained by roll-ing up TiO2(101) surface,which was prepared by shearing anatase bulk TiO2 perpendicular to direction.The possible configu-rations of adsorbed Pt monomers,dimmers and trimers at optimized TiO2 nanotube were investigated,respectively.The most stable structure was ...