Photocatalytic activity and characterization of sol–gel-derived Ni-doped TiO2-coated active carbon composites

2012 ◽  
Vol 261 ◽  
pp. 835-841 ◽  
Author(s):  
R.R. Bhosale ◽  
S.R. Pujari ◽  
M.K. Lande ◽  
B.R. Arbad ◽  
S.B. Pawar ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Active Carbon ◽  
Sol Gel ◽  
Carbon Composites ◽  
Doped Tio2

Structural characterization of Ag-doped TiO2 with enhanced photocatalytic activity

RSC Advances ◽  
2015 ◽  
Vol 5 (125) ◽  
pp. 103752-103759 ◽  
Author(s):  
Lidiaine M. Santos ◽  
Werick A. Machado ◽  
Marcela D. França ◽  
Karen A. Borges ◽  
Roberto M. Paniago ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Thermal Treatment ◽  
Structural Characterization ◽  
Sol Gel ◽  
Cost Effective ◽  
Doped Tio2 ◽  
Cost Effective Method ◽  
Gel Technique

Ag-doped TiO2 nanoparticles with different metallic content (0.5, 2.0, and 5.0% m/m) were prepared using a simple and cost-effective method based on a sol–gel technique, followed by thermal treatment.

scholarly journals Microwave treated sol–gel synthesis and characterization of hybrid ZnS–RGO composites for efficient photodegradation of dyes

2017 ◽  
Vol 41 (4) ◽  
pp. 1723-1735 ◽  
Author(s):  
Lellala Kashinath ◽  
Keerthiraj Namratha ◽  
Shivanna Srikantaswamy ◽  
Ajayan Vinu ◽  
Kullaiah Byrappa
Keyword(s):  
Electron Transfer ◽  
Photocatalytic Activity ◽  
Sol Gel ◽  
Charge Recombination ◽  
Synthesis And Characterization ◽  
Excellent Photocatalytic Activity ◽  
Sol Gel Synthesis

Excellent photocatalytic activity by highly photo-responsive electron transfer from ZnS–RGO, and RGO acts as an electron reservoir and effectively suppresses charge recombination.

Cr Doped TiO2 Supported on TUD-1 Photocatalyst for Dye Photodegradation

2014 ◽  
Vol 69 (5) ◽  
Author(s):  
Ooi Yee Khai ◽  
Leny Yuliati ◽  
Siew Ling Lee
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
High Surface ◽  
Sol Gel ◽  
High Surface Area ◽  
Xrd Analysis ◽  
Bandgap Energy ◽  
Doped Tio2 ◽  
Visible Light Driven ◽  
Synthesized Materials

New visible light driven photocatalysts of 1 mol% Cr doped TiO2 supported on TUD-1 have been successfully synthesized. The Cr-TiO2/xTUD-1 (x = 10, 20, 30, 40 and 50) photocatalysts were prepared via surfactant-free sol-gel method followed by wet impregnation procedures. XRD analysis revealed that both TiO2 and Cr were incorporated in the highly porous siliceous matrix. FTIR analysis showed the existence of Si-O-Ti in all the materials. As observed, tetrahedral-coordinated Ti species were dominant in Cr-TiO2/10TUD-1, Cr-TiO2/20TUD-1 and Cr-TiO2/30TUD-1. Meanwhile, octahedral- coordinated Ti species were the dominant species in Cr-TiO2/40TUD-1 and Cr-TiO2/50TUD-1. It has been demonstrated that the amount of TUD-1 as photocatalyst support affected the wavelength response and the bandgap energy of the resulting materials. All the materials have bandgap energy of ~2.9 eV. The photocatalytic performance of the synthesized materials was tested out in dye photodegradation under visible light irradiation at 298 K for 5 hours. Results showed that all Cr-TiO2/TUD-1 materials had higher photocatalytic activity than that of Cr-TiO2. This could be explained by the high surface area and porosity provided by TUD-1 in enhancing the adsorption and diffusivities of the dye molecules, hence leading to the promising photocatalytic activity. Among the materials prepared, Cr-TiO2/30TUD-1 appeared as the most superior photocatalyst which gave the highest dye photodegradation.

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