Photocatalytic reverse water gas shift co2 reduction to co over montmorillonite supported tio2 nanocomposite
Photocatalytic CO2 reduction with H2 as a reductant over gold (Au)doped TiO2 nanocatalysts in a continuous monolith photoreactor has been investigated. The nanocatalysts were characterized by XRD, SEM, N2 adsorptiondesorption and UVVisible spectroscopy. Crystalline nanoparticles of anatase phas...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Published: |
The Italian Association of Chemical Engineering
2016
|
| Subjects: | |
| Online Access: | http://eprints.utm.my/68316/ http://eprints.utm.my/68316/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Photocatalytic CO2 reduction with H2 as a reductant over gold (Au)doped TiO2 nanocatalysts in a continuous monolith photoreactor has been investigated. The nanocatalysts were characterized by XRD, SEM, N2 adsorptiondesorption and UVVisible spectroscopy. Crystalline nanoparticles of anatase phase TiO2 were obtained in the Audoped TiO2 samples. CO was the major product over 0.5 wt. % Audoped TiO2 with the yield rate of 12,305 ppm gcatal.(1) h(1), 318 times higher than un doped TiO2 catalyst. Significantly higher photoactivity of Audoped TiO2 was obviously due to fast electron transfer with hindered recombination rates and larger illuminated surface area inside the monolith channels. The CO production rate was gradually reduced with increasing the space velocity. The stability of the reused catalysts for CO production sustained at cyclic runs. It is evident Audoped TiO2 nanocatalyst supported over monolith channels is highly potential for continuous CO2 photoreduction to CO and hydrocarbons. |
|---|