Understanding the effect of surface/bulk defects on the photocatalytic activity of TiO2: anatase versus rutile

2013 ◽  
Vol 15 (26) ◽  
pp. 10978 ◽  
Author(s):  
Junqing Yan ◽  
Guangjun Wu ◽  
Naijia Guan ◽  
Landong Li ◽  
Zhuoxin Li ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Tio2 Anatase ◽  
Effect Of Surface

The stabilization effect of surface capping on photocatalytic activity and recyclable stability of Ag3PO4

2014 ◽  
Vol 46 ◽  
pp. 138-141 ◽  
Author(s):  
Jinghai Liu ◽  
Xin Li ◽  
Fang Liu ◽  
Luhua Lu ◽  
Liang Xu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Stabilization Effect ◽  
Surface Capping ◽  
Effect Of Surface

The effect of surface OH-population on the photocatalytic activity of rare earth-doped P25-TiO2 in methylene blue degradation

2008 ◽  
Vol 260 (1) ◽  
pp. 75-80 ◽  
Author(s):  
P. Du ◽  
A. Bueno-López ◽  
M. Verbaas ◽  
A.R. Almeida ◽  
M. Makkee ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Rare Earth ◽  
Methylene Blue Degradation ◽  
Rare Earth Doped ◽  
Effect Of Surface

scholarly journals Ti2O3/TiO2-Assisted Solar Photocatalytic Degradation of 4-tert-Butylphenol in Water

Catalysts ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1379
Author(s):  
Saule Mergenbayeva ◽  
Timur Sh. Atabaev ◽  
Stavros G. Poulopoulos
Keyword(s):  
Photocatalytic Activity ◽  
Treatment Method ◽  
Treatment Temperature ◽  
Tio2 Anatase ◽  
Bicarbonate Ions ◽  
Photocatalytic Activities ◽  
Structure Surface ◽  
Negative Effect ◽  
Water Constituents ◽  
Tio2 Rutile

Colored Ti2O3 and Ti2O3/TiO2 (mTiO) catalysts were prepared by the thermal treatment method. The effects of treatment temperature on the structure, surface area, morphology and optical properties of the as-prepared samples were investigated by XRD, BET, SEM, TEM, Raman and UV–VIS spectroscopies. Phase transformation from Ti2O3 to TiO2 rutile and TiO2 anatase to TiO2 rutile increased with increasing treatment temperatures. The photocatalytic activities of thermally treated Ti2O3 and mTiO were evaluated in the photodegradation of 4-tert-butylphenol (4-t-BP) under solar light irradiation. mTiO heated at 650 °C exhibited the highest photocatalytic activity for the degradation and mineralization of 4-t-BP, being approximately 89.8% and 52.4%, respectively, after 150 min of irradiation. The effects of various water constituents, including anions (CO32−, NO3, Cl and HCO3−) and humic acid (HA), on the photocatalytic activity of mTiO-650 were evaluated. The results showed that the presence of carbonate and nitrate ions inhibited 4-t-BP photodegradation, while chloride and bicarbonate ions enhanced the photodegradation of 4-t-BP. As for HA, its effect on the degradation of 4-t-BP was dependent on the concentration. A low concentration of HA (1 mg/L) promoted the degradation of 4-t-BP from 89.8% to 92.4% by mTiO-650, but higher concentrations of HA (5 mg/L and 10 mg/L) had a negative effect.

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