N-doped nano-crystalline TiO2 powders have been synthesized by the sol-gel method.The shape and crystal structure of the......

随着化石燃料的日益枯竭,能源危机已经成为一个严重的全球性问题.开发氢气等环境友好型的可再生能源来替代化石燃料己迫在眉睫.光......