TiO2 나노 튜브의 합성과 염료감응형 태양전지

Abstract

Titanium dioxide (TiO2) is one of the most important products in the industry. TiO2 is the most investigated, having many emerging applications for white pigments, cosmetic products, fillers, corrosion-protective coatings, gas sensors, photocatalyst, etc. One-dimensional nanostructure TiO2 such as nanotubes and nanorods have attracted intensive research interests because of their size and dimensionally dependent physicochemical properties and potential applications in the fields of solar energy conversion, lithium batteries and super capacitors. The anatase TiO2 nanotubes were successfully fabricated by hydrothermal synthesis. By the 400 ℃ heat treatment, anatase phase was transformed well in the nanotubes. The morphology of anatase TiO2 nanotubes were tubular structures with the inner diameters of about 2 nm and outer diameters of 10-20 nm. The BET surface area and the pore volume of anatase TiO2 nanotubes are greater by about 5.2 times and 2.5 times, respectively. By using the electrospray-compression method, TiO2 nanotubes could deposit to electrode as binder-free. Then, we assembled the DSSC using the anatase TiO2 nanotubes as the working electrode. The cell efficiency of 3.01% was achieved. These results imply that prepared anatase TiO2 nanotubes could be the products used as photocatalyst applications such as DSSC.