关键词: 二氧化钛, 溶胶-凝胶法, 纳米粒子, 原位合成

Abstract: The structure of hair was replicated via a sol-gel process using human hair as the template. When using silicate and TEOS as the precursor, the cell structure of hair cuticle was not well replicated. When using Ti (OnBu)4 as the precursor, however, titania microtubes were obtained, with nanopores in their wall and nanoporous platelets on their outer surfaces, which were derived from cuticle cells on hair surfaces. The nanopores in the microtubes acted as an effective nanoreactor for in situ synthesis of Au nanoparticles. The microchannels, nanopores and noble metal nanoparticles may provide a unique combination that would be attractive in such applications as catalysis, adsorption, and separation.

Key words: titania, sol-gel method, gold nanoparticles, in-situ