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Photooxidation of ethylene over gold deposited titanium dioxide |
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| รหัสดีโอไอ | |
| Title | Photooxidation of ethylene over gold deposited titanium dioxide |
| Creator | Peerapon Buakaew |
| Contributor | Akawat Sirisak |
| Publisher | Chulalongkorn University |
| Publication Year | 2548 |
| Keyword | Titanium dioxide, Ethylene |
| Abstract | Each type of titanium dioxide has different photocatalytic activity on photooxidation of ethylene. Titanium dioxide synthesized via sol-gel method type I (prepared in nitric acid and water) yielded the most conversion of ethylene and less for that synthesized via sol-gel method type II (prepared in ethanol and water), solvothermal method and JRC-TIO1, respectively. When gold was deposited. For titanium dioxide synthesized via sol-gel method type I and type II including solvothermal method, conversion of ethylene decreases with increasing of pH values due to decreasing of amount of Ti[superscript 3+] affected from gold nanoparticles confirmed by Electron Spin Resonance results (ESR) and decreasing of active gold nanoparticles confirmed by Transmission Electron Microscope results (TEM). However, JRC-TIO1 titanium dioxide yielded more conversion of ethylene when it was deposited with gold nanoparticles. The highest conversion could be obtained at pH value of 9 at which the average particle size of gold nanoparticles were less than 5 nm and gave high activity for the reaction at the surface of titanium dioxide. |
| ISBN | 9741743963 |
| URL Website | cuir.car.chula.ac.th |
