+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

N-doped SiO2/TiO2 mesoporous nanoparticles with enhanced photocatalytic activity under visible-light irradiation



N-doped SiO2/TiO2 mesoporous nanoparticles with enhanced photocatalytic activity under visible-light irradiation



Chemosphere 72(3): 414-421



Mesoporous nanocrystalline N-doped SiO2/TiO2 visible-light photocatalysts were prepared by treating SiO2/TiO2 xerogels in a flow of nitrogen gas bubbled through concentrated ammonia solution. Structural characterization and performance analysis results revealed that the addition of SiO2 remarkably altered the phase composition, specific surface area, microstructure, as well as the photocatalytic activity of N-doped TiO2. The presence of SiO2 in N-doped TiO2 particles suppressed the formation of rutile phase and the crystal growth of N-doped TiO2 particles during thermal calcinations. When weight ratio of SiO2/TiO2 was in 0.05-0.20, the N-doped SiO2/TiO2 exhibited higher photocatalytic activity than the N-doped TiO2, and optimum ratio was found to be 0.05. The enhanced photocatalytic activity could be attributed to the higher specific area, larger pore volume, and more surface hydroxyl groups in the catalyst.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 023085472

Download citation: RISBibTeXText

PMID: 18423518

DOI: 10.1016/j.chemosphere.2008.02.035


Related references

S-doped mesoporous nanocomposite of HTiNbO5 nanosheets and TiO2 nanoparticles with enhanced visible light photocatalytic activity. Physical Chemistry Chemical Physics 18(2): 801-810, 2016

Enhanced photocatalytic activity of S-doped TiO2-ZrO2 nanoparticles under visible-light irradiation. Journal of Hazardous Materials 166(2-3): 939-944, 2009

Comparative investigation of mesoporous- and non-mesoporous-assembled TiO2 nanocrystals for photocatalytic H2 production over N-doped TiO2 under visible light irradiation. International Journal of Hydrogen Energy 33(21): 5947-5957, 2008

BiY doped and co-doped TiO2 nanoparticles: Characterization and photocatalytic activity under visible light irradiation. Journal of Molecular Catalysis A: Chemical 380: 34-42, 2013

Simple fabrication of N-doped mesoporous TiO2 nanorods with the enhanced visible light photocatalytic activity. Nanoscale Research Letters 9(1): 34, 2014

Enhanced visible light photocatalytic activity of interlayer-isolated triplex [email protected]@TiO2 core-shell nanoparticles. Nanoscale 5(8): 3359-3366, 2013

Silver-loaded nitrogen-doped yolk-shell mesoporous TiO2 hollow microspheres with enhanced visible light photocatalytic activity. Nanoscale 7(2): 784-797, 2015

Synthesis of Metal Ion-Doped TiO2 Nanoparticles Using Two-Phase Method and Their Photocatalytic Activity Under Visible Light Irradiation. Journal of Nanoscience and Nanotechnology 16(2): 1911-1915, 2016

One-step synthesis of M-doped TiO2 nanoparticles in TUD-1 (M-TiO2-TUD-1, M=Cr or V) and their photocatalytic performance under visible light irradiation. Journal of Molecular Catalysis A: Chemical 393: 39-46, 2014

Mesoporous nitrogen-doped TiO2 for the photocatalytic destruction of the cyanobacterial toxin microcystin-LR under visible light irradiation. Environmental Science and Technology 41(21): 7530-7535, 2007

Enhanced photocatalytic activity of mesoporous SiO2/TiO2solgel coatings doped with Ag nanoparticles. Journal of Sol-Gel Science and Technology 76(1): 180-194, 2015

A comparative study of two techniques for determining photocatalytic activity of nitrogen doped TiO2 nanotubes under visible light irradiation: Photocatalytic reduction of dye and photocatalytic oxidation of organic molecules. Journal of Photochemistry and Photobiology A: Chemistry 222(1): 258-262, 2011

Fabrication of Fe-doped TiO2 nanoparticles and investigation of photocatalytic decolorization of reactive red 198 under visible light irradiation. Ultrasonics Sonochemistry 32: 314-319, 2016

Photocatalytic treatment of 2,4,6-trinitotoluene in red water by multi-doped TiO2 with enhanced visible light photocatalytic activity. Colloids and Surfaces A: Physicochemical and Engineering Aspects 452: 103-108, 2014

Biomimetic synthesis of TiO₂-SiO₂-Ag nanocomposites with enhanced visible-light photocatalytic activity. Acs Applied Materials and Interfaces 5(9): 3824-3832, 2013