Effect of Synthesis conditions on CVC-made TiO2 Nanoparticles and those Photocatalytic Performances for Methylene Blue

Title
Effect of Synthesis conditions on CVC-made TiO2 Nanoparticles and those Photocatalytic Performances for Methylene Blue
Authors
진성민박은석정종수
Keywords
CVC; TiO2
Issue Date
2011-05
Publisher
Colloids and Materials 2011
Abstract
Nanosized TiO2 photocatalysts were synthesized using a chemical vapor condensation method under a range of synthesis conditions (synthesis temperature, precursor vapor concentration, and residence time in a tubular electric furnace). X-ray diffraction showed that the prepared TiO2 powders consisted mainly of anatase (> 94%) with a small amount of rutile. The mean particle diameter from the Brunauer–Emmett–Teller surface area and transmission electron microscopy measurements ranged from 9.4 to 16.6 nm. The specific surface area (92.5-163.5 m2 g-1) of the prepared TiO2 powders was found to be dependent on the synthesis conditions. The content of hydroxyl groups on the surface of the prepared TiO2 sample was higher than those on commercial TiO2, resulting in increased photocatalytic oxidation. The photocatalytic activity of the TiO2 samples prepared in a methylene blue solution was strongly dependent on the crystallinity and specific surface area, which were affected by the TTIP vapor concentration and residence time.
URI
http://pubs.kist.re.kr/handle/201004/40020
Appears in Collections:
KIST Publication > Conference Paper
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE