Article ID Journal Published Year Pages File Type
1677148 Thin Solid Films 2006 7 Pages PDF
Abstract

Nanosized TiO2 with controlled crystal phase/structure was prepared by a sol–hydrothermal process using titanium (IV) n-butoxide as a precursor of TiO2. After hydrothermal processing at 200 °C for 1 h, the granulous anatase phase with average crystal size of 5 nm was formed. Upon increasing the heat treatment period to more than 5 h, the rod-like rutile phase with particle size of 19 × 70 nm became predominant. The structure evolution from X-ray diffraction (XRD), particle size/morphology from transmission electron microscopy (TEM), surface area from Brunauer–Emmitt–Teller (BET) analysis, and photocatalytic activity of TiO2 products show strong correlation with the hydrothermal conditions.

Related Topics
Physical Sciences and Engineering Materials Science Nanotechnology
Authors
, , , , , ,