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Photocatalytic activity of porous titania nanocrystals prepared by nanoscale permeation process in supercritical CO2: Effects of supercritical conditions

Paper ID Volume ID Publish Year Pages File Format Full-Text
51199 46835 1989 5 PDF Available
Title
Photocatalytic activity of porous titania nanocrystals prepared by nanoscale permeation process in supercritical CO2: Effects of supercritical conditions
Abstract

Porous TiO2 nanocrystals (PTN) were synthesized using activated carbon templates with supercritical CO2 by using the nanoscale permeation (NP) process. The photoactivity of PTN was tested by methylene blue (MB) degradation. Compared with the commercially available P-25, all PTN exhibited significant photocatalytic degradation of MB mainly due to their porous structure with high surface area, high hydroxy concentration and small crystalline size. The optimum temperature and pressure are found to be 60 °C and 26 MPa, under which obtained PTN-1 shows the highest photoactivity and slow deactivation for MB degradation after 15 trials.

Keywords
Supercritical CO2; TiO2 nanocrystals; Pores; Photocatalysis; Methylene blue
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Photocatalytic activity of porous titania nanocrystals prepared by nanoscale permeation process in supercritical CO2: Effects of supercritical conditions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 10, Issue 15, 15 September 2009, Pages 1985–1989
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us