Influence of Silicon Content on the Photocatalytic Activity of Methyl Orange by TiO2-SiO2 Composite Aerogels
Abstract
TiO2-SiO2 aerogel has been synthesized at an ambient pressure with a silica-precursor of waterglass and a titania-precursor titanium tetrachloride with a variable silicon content (10%, 20%, 30%) by sol-gel method/surface modification. The photocatalytic performance of these materials was tested by degrading the methyl orange following UV light irradiation at l =465nm. The experimental results have shown that the as-prepared aerogels have entirely consisted with anatase crystalline phase. With the increase of silicon content, the photocatalytic degradation capacity of the as-synthesized aerogels was decreased. When the silicon content is 10%, the best catalytic degradation effect was obtained, the decolorizing efficiency of MO is detected as 97.13% after 160 mins exposure to UV light irradiation.
Keywords
TiO2-SiO2 composite aerogel, Silicon content, Sol-gel method, Photocatalysis
DOI
10.12783/dtmse/icmsea/mce2017/10859
10.12783/dtmse/icmsea/mce2017/10859
Refbacks
- There are currently no refbacks.