scholarly journals Enhanced photocatalytic activity of Fe-doped TiO2 coated on N-doped activated carbon composites for photocatalytic degradation of dyeing wastewater

2017 ◽  
Author(s):  
Jie Zhou ◽  
Beibei Zhu ◽  
Lu Wang ◽  
Ya Li ◽  
Qichen Qiao
Keyword(s):  
Photocatalytic Activity ◽  
Activated Carbon ◽  
Photocatalytic Degradation ◽  
Carbon Composites ◽  
Dyeing Wastewater ◽  
Doped Tio2

scholarly journals Enhancement of photocatalytic activity of TiO2 nanoparticles by silver doping: photodeposition versus liquid impregnation methods

2013 ◽  
Vol 10 (1) ◽  
pp. 1-7 ◽  
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Tio2 Nanoparticles ◽  
Model Compound ◽  
Scanning Electron Micrographs ◽  
X Ray Diffraction ◽  
Electron Hole ◽  
Doped Tio2 ◽  
Liquid Impregnation ◽  
Positive Effect

Silver doped TiO2 nanoparticles have been prepared by liquid impregnation (LI) and photodeposition (PD) methods and characterized by surface analytical methods such as scanning electron micrographs (SEM) and X-ray diffraction (XRD). The photocatalytic activity of silver doped TiO2 was tested by photocatalytic degradation of C.I. Acid Red 88 (AR88) as a model compound from monoazo textile dyes. Results show silver doped TiO2 is more efficient than undoped TiO2 at photocatalytic degradation of AR88. The positive effect of silver on the photoactivity of TiO2 at degradation of AR88 may be explained by its ability to trap electrons. This process reduces the recombination of light generated electron-hole pairs at TiO2 surface. Silver content has an optimum value 2% in LI and 0.5% in PD methods for achieving high photocatalytic activity. The AR88 decomposition with Ag-photodeposited method was much higher than that of deposited with LI method.

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

scholarly journals Photocatalytic Degradation of Humic Acid by Fe-TiO2Supported on Spherical Activated Carbon with Enhanced Activity

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Mi-Hwa Baek ◽  
Ji-Sook Hong ◽  
Ji-Won Yoon ◽  
Jeong-Kwon Suh
Keyword(s):  
Photocatalytic Activity ◽  
Activated Carbon ◽  
Humic Acid ◽  
Photocatalytic Degradation ◽  
Wavelength Range ◽  
High Photocatalytic Activity ◽  
Exchange Method ◽  
Process Step ◽  
Fe Content ◽  
Spherical Activated Carbon

Fe-TiO2supported on spherical activated carbon (Fe-TiO2/SAC) with different Fe contents was prepared by heat treatment process after ion exchange method. The prepared Fe-TiO2/SAC was characterized by SEM, EDS, and BET. Batch experiments for photocatalytic degradation of humic acid by Fe-TiO2/SAC were carried out in the fluidized bed photoreactor. It was found that 0 wt% Fe-TiO2/SAC had high photocatalytic activity in the wavelength range of 100~280 nm. However, Fe-TiO2/SAC with Fe contents of 0.4, 0.6, and 0.8 wt% exhibited higher photocatalytic activity than 0 wt% Fe-TiO2/SAC in the wavelength range of 315~400 nm compared to that of 100~280 nm. The optimum Fe content was 0.6 wt% for maximum photocatalytic degradation of humic acid. Moreover, Fe-TiO2/SAC does not require an additional process step for separation of photocatalyst from treated water after photocatalysis.

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