Efficient Photocatalytic Degradation of Organic Compounds by Ilmenite AgSbO3under Visible and UV Light Irradiation

2009 ◽  
Vol 113 (28) ◽  
pp. 12483-12488 ◽  
Author(s):  
Jyoti Singh ◽  
S. Uma
Keyword(s):  
Photocatalytic Degradation ◽  
Organic Compounds ◽  
Uv Light ◽  
Light Irradiation ◽  
Uv Light Irradiation

Enhanced Photocatalytic Properties of N and Fe Co-Doped TiO2 Nanocomposites with Reduced Graphene Oxide for Volatile Organic Compounds

2019 ◽  
Vol 11 (9) ◽  
pp. 1263-1270 ◽  
Author(s):  
Zhanguo Li ◽  
Chao Shi ◽  
Lijuan Wang ◽  
Lijing Sun ◽  
Qiang Sun
Keyword(s):  
Graphene Oxide ◽  
Volatile Organic Compounds ◽  
Photocatalytic Degradation ◽  
Reduced Graphene Oxide ◽  
Organic Compounds ◽  
Uv Light ◽  
Light Irradiation ◽  
Uv Light Irradiation ◽  
Reduced Graphene ◽  
Volatile Organic

Photocatalytic nanocomposites of titanium dioxide (TiO2) were prepared by hydrothermal method. Reduced graphene oxide (RGO) was applied to prepare various TiO2 composites of doped nanoparticles by using NH4Cl and FeCl3 as sources. The structure and morphology of these composites showed that TiO2 was loaded on surface of RGO. Meanwhile, the agglomeration of TiO2 decreased and the dispersion became uniform for doped materials. Under ultraviolet (UV) light irradiation, the photocatalytic degradation of volatile organic compounds (VOC) by RGO/TiO2 composites with codoping of N and Fe reached to 90.5%. The photocatalytic degradation was higher than RGO/TiO2 composites and pure TiO2 by 1.8 and 5.9 times, respectively. The role of co-doping composites may have a possible mechanism for toluene under UV light irradiation. The enhanced photocatalytic properties were attributed to N and Fe doping which generated intermediate energy level, extended absorption and decreased band gap of UV light.

Enhanced Photocatalytic Properties of N and Fe Co-Doped TiO2 Nanocomposites with Reduced Graphene Oxide for Volatile Organic Compounds

2019 ◽  
Vol 11 (9) ◽  
pp. 1263-1270
Author(s):  
Zhanguo Li ◽  
Chao Shi ◽  
Lijuan Wang ◽  
Lijing Sun ◽  
Qiang Sun
Keyword(s):  
Graphene Oxide ◽  
Volatile Organic Compounds ◽  
Photocatalytic Degradation ◽  
Reduced Graphene Oxide ◽  
Organic Compounds ◽  
Uv Light ◽  
Light Irradiation ◽  
Uv Light Irradiation ◽  
Reduced Graphene ◽  
Volatile Organic

Photocatalytic nanocomposites of titanium dioxide (TiO2) were prepared by hydrothermal method. Reduced graphene oxide (RGO) was applied to prepare various TiO2 composites of doped nanoparticles by using NH4Cl and FeCl3 as sources. The structure and morphology of these composites showed that TiO2 was loaded on surface of RGO. Meanwhile, the agglomeration of TiO2 decreased and the dispersion became uniform for doped materials. Under ultraviolet (UV) light irradiation, the photocatalytic degradation of volatile organic compounds (VOC) by RGO/TiO2 composites with codoping of N and Fe reached to 90.5%. The photocatalytic degradation was higher than RGO/TiO2 composites and pure TiO2 by 1.8 and 5.9 times, respectively. The role of co-doping composites may have a possible mechanism for toluene under UV light irradiation. The enhanced photocatalytic properties were attributed to N and Fe doping which generated intermediate energy level, extended absorption and decreased band gap of UV light.

Solid-phase photocatalytic degradation of polyethylene–goethite composite film under UV-light irradiation

2009 ◽  
Vol 172 (2-3) ◽  
pp. 1424-1429 ◽  
Author(s):  
G.L. Liu ◽  
D.W. Zhu ◽  
S.J. Liao ◽  
L.Y. Ren ◽  
J.Z. Cui ◽  
...  
Keyword(s):  
Composite Film ◽  
Photocatalytic Degradation ◽  
Solid Phase ◽  
Uv Light ◽  
Light Irradiation ◽  
Uv Light Irradiation

scholarly journals Solid-Phase Photocatalytic Degradation of Polyvinyl Borate

Catalysts ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 499 ◽  
Author(s):  
Hafize Koysuren
Keyword(s):  
Electron Microscopy ◽  
Photocatalytic Degradation ◽  
Polymer Composites ◽  
Tio2 Nanoparticles ◽  
Solid Phase ◽  
Uv Light ◽  
Light Irradiation ◽  
Morphological Properties ◽  
Uv Light Irradiation ◽  
Vis Spectroscopy

In this study, polymer composites based on polyvinyl borate (PVB) with titanium dioxide (TiO2) nanoparticles were prepared through the condensation reaction of polyvinyl alcohol and boric acid in the presence of TiO2 nanoparticles. The solid-phase photocatalytic degradation of the polymer composites under UV light irradiation was investigated and compared with that of the pure PVB with the aid of weight loss measurements. The introduction of the photocatalyst nanoparticles in PVB enhanced the solid-phase photocatalytic degradation of the polymer matrix under UV light irradiation. The structural and morphological properties of PVB/TiO2 composites were analyzed by transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and UV-Vis spectroscopy, respectively. FTIR analysis revealed that PVB synthesis was successfully carried out in the presence of the photocatalyst nanoparticles. According to the morphological analyses, TiO2 nanoparticles were well dispersed in the PVB matrix.

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