... nanoskeleton) [22, 23]. This system had some uniquefeatures and advantages, for example, a facile preparation, crystallization of titania in aqueous solution in mild condi-tions and formation of hexagonal-structured ... characterized by X-raydiffraction (XRD) and transmission electron microscopy(TEM). The influence of hydrochloric acid concentration on the morphology, crystalline and the formation of the nano-structures ... supported by the NationalNatural Science Foundation of China (Grant No. 20903034,10874040) and the Cultivation Fund of the Key Scientific and Technical Innovation Project, Ministry of Education of...