Synthesis of TiO2/Au Nanocomposites via Sol-Gel Process for Photooxidation of Methanol
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Adel A. Ismail
and
Detlef W. Bahnemann
Abstract
Well-ordered TiO2/Au nanocomposites were prepared using sol-gel process in presence of poly(ethylene oxide)106-poly(propylene oxide)70-poly(ethylene oxide)106 triblock copolymer (Pluronic F127) as the structuredirecting agents. The content of Au into TiO2 network was amounted to be 0.3, 0.5, 1 and 2 wt%. The produced TiO2/Au gels were calcined at 500 °C for 4 hours under atmospheric conditions. The findings indicated that TEM images of 2 wt%Au/TiO2 nanocomposites correspondeds anatase TiO2 nanoparticles, which mainly consisted of nanoscale cubes and rhombohedra. These nanoparticles are homogenously distribution and have average sizes of TiO2 and Au 12 ± 2 and 20 ± 5 nm respectively. TiO2/Au nanocomposites were investigated for their photooxidation efficiencies for methanol to produce formaldehyde at room temperature. The results indicated that, the TiO2/Au nanocomposites show good performance in methanol photooxidation due to their highly ordered crystalline, one crystal phase, small particle size and strong adsorptive capacity. Additionally, the results of this study demonstrate that 1 wt%Au/TiO2 is more photoactive than pure TiO2 and P25 degussa. The photonic efficiencies of the TiO2/Au nanocomposites at varies Au content was determined. In general, a large surface area, and highly TiO2 crystalline anatase obtained contributes high adsorptive capacity and hence resulting in high photocatalytic activity.
© 2016 by Walter de Gruyter Berlin/Boston
Articles in the same Issue
- Synthesis of TiO2/Au Nanocomposites via Sol-Gel Process for Photooxidation of Methanol
- Design of CeyCoxTi (1-x) O3+δ Perovskite for Photocatalysis: A Statistical Study
- Electro-Fenton Treatment of TNT in Aqueous Media in Presence of Cyclodextrin. Application to Ex-situ Treatment of Contaminated Soil
- A Quantum Mechanical Approach to TiO2 Photocatalysis
- Removal of Color Compounds from Recycled Water Using Combined Activated Carbon Adsorption and AOP Decomposition
- Preparation of Co-doped TiO2 for Photocatalytic Degradation of NOx in Air under Visible Light
- Depletion of Several Antibiotics Used in Industrial Process Using Immobilized TiO2
- Oxidative Pretreatment of Fresh and Mature Landfill Leachate
- Titanium Dioxide onto Polyethylene for Water Decontamination
- Application of Photocatalysis for the Removal of Natural Organic Matter in Simulated Surface and Ground Waters
- Photocatalytic Treatment of A Dye Polluted Industrial Effluent With A Solar Pilot-Scale CPC Reactor
- Evaluation of the Algaecide Activity of Titanium Dioxide on Autoclaved Aerated Concrete
- Degradation of 4-n-nonylphenol in Water by 20 kHz Ultrasound
- Integration of Photocatalysis with Ultrafiltration or Membrane Distillation for Removal of Azo Dye Direct Green 99 from Water
- Binder Effect on Photocatalytic Performance of TiO2 Solution Coating Layers
- Rhodamine B Discolouration on TiO2 in the Cement Environment: A Look at Fundamental Aspects of the Self-cleaning Effect in Concretes
- Effects of Inorganic Anions and Humic Acid on the Photocatalytic and Ozone Oxidation of Oxytetracycline in Aqueous Solution
Articles in the same Issue
- Synthesis of TiO2/Au Nanocomposites via Sol-Gel Process for Photooxidation of Methanol
- Design of CeyCoxTi (1-x) O3+δ Perovskite for Photocatalysis: A Statistical Study
- Electro-Fenton Treatment of TNT in Aqueous Media in Presence of Cyclodextrin. Application to Ex-situ Treatment of Contaminated Soil
- A Quantum Mechanical Approach to TiO2 Photocatalysis
- Removal of Color Compounds from Recycled Water Using Combined Activated Carbon Adsorption and AOP Decomposition
- Preparation of Co-doped TiO2 for Photocatalytic Degradation of NOx in Air under Visible Light
- Depletion of Several Antibiotics Used in Industrial Process Using Immobilized TiO2
- Oxidative Pretreatment of Fresh and Mature Landfill Leachate
- Titanium Dioxide onto Polyethylene for Water Decontamination
- Application of Photocatalysis for the Removal of Natural Organic Matter in Simulated Surface and Ground Waters
- Photocatalytic Treatment of A Dye Polluted Industrial Effluent With A Solar Pilot-Scale CPC Reactor
- Evaluation of the Algaecide Activity of Titanium Dioxide on Autoclaved Aerated Concrete
- Degradation of 4-n-nonylphenol in Water by 20 kHz Ultrasound
- Integration of Photocatalysis with Ultrafiltration or Membrane Distillation for Removal of Azo Dye Direct Green 99 from Water
- Binder Effect on Photocatalytic Performance of TiO2 Solution Coating Layers
- Rhodamine B Discolouration on TiO2 in the Cement Environment: A Look at Fundamental Aspects of the Self-cleaning Effect in Concretes
- Effects of Inorganic Anions and Humic Acid on the Photocatalytic and Ozone Oxidation of Oxytetracycline in Aqueous Solution
