Gold nanoparticles-assisted sodium borohydride supported on titania as a catalyst for the oxidative steam reforming of methanol and CO oxidation
Gold (Au) nanoparticles (NPs) and Au-copper (ii) oxide (CuO) supported on titania (TiO2) catalysts prepared by deposition-precipitation were investigated for the oxidative steam reforming of methanol (OSRM) and CO oxidation reactions. The effect of sodium borohydride (NaBH4) as a reducing agent duri...
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th-mahidol.850682023-06-19T00:26:09Z Gold nanoparticles-assisted sodium borohydride supported on titania as a catalyst for the oxidative steam reforming of methanol and CO oxidation Atjayutpokin T. Mahidol University Materials Science Gold (Au) nanoparticles (NPs) and Au-copper (ii) oxide (CuO) supported on titania (TiO2) catalysts prepared by deposition-precipitation were investigated for the oxidative steam reforming of methanol (OSRM) and CO oxidation reactions. The effect of sodium borohydride (NaBH4) as a reducing agent during the Au catalyst preparation was studied. Characterization by high-resolution transmission electron microscopy established that an optimal NaBH4 quantity provided small Au NPs of less than 5 nm diameter with a uniform distribution that exhibited a higher catalytic activity than the others in the OSRM. The Au-CuO catalysts formed with different metal atomic ratios were also synthesized and compared for their catalytic activities in the OSRM and CO oxidation reactions with those from Au/TiO2 and Cu/TiO2. All Au-CuO catalysts achieved the highest methanol conversion at 400 °C, whereas the monometallic Au provided an almost five-fold higher catalytic CO oxidation activity due to the possession of smaller particles than in the other catalysts. 2023-06-18T17:26:09Z 2023-06-18T17:26:09Z 2022-12-01 Article Materials Today Communications Vol.33 (2022) 10.1016/j.mtcomm.2022.105019 23524928 2-s2.0-85142702467 https://repository.li.mahidol.ac.th/handle/123456789/85068 SCOPUS |
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Materials Science Atjayutpokin T. Gold nanoparticles-assisted sodium borohydride supported on titania as a catalyst for the oxidative steam reforming of methanol and CO oxidation |
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Gold (Au) nanoparticles (NPs) and Au-copper (ii) oxide (CuO) supported on titania (TiO2) catalysts prepared by deposition-precipitation were investigated for the oxidative steam reforming of methanol (OSRM) and CO oxidation reactions. The effect of sodium borohydride (NaBH4) as a reducing agent during the Au catalyst preparation was studied. Characterization by high-resolution transmission electron microscopy established that an optimal NaBH4 quantity provided small Au NPs of less than 5 nm diameter with a uniform distribution that exhibited a higher catalytic activity than the others in the OSRM. The Au-CuO catalysts formed with different metal atomic ratios were also synthesized and compared for their catalytic activities in the OSRM and CO oxidation reactions with those from Au/TiO2 and Cu/TiO2. All Au-CuO catalysts achieved the highest methanol conversion at 400 °C, whereas the monometallic Au provided an almost five-fold higher catalytic CO oxidation activity due to the possession of smaller particles than in the other catalysts. |
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Atjayutpokin T. |
title |
Gold nanoparticles-assisted sodium borohydride supported on titania as a catalyst for the oxidative steam reforming of methanol and CO oxidation |
title_short |
Gold nanoparticles-assisted sodium borohydride supported on titania as a catalyst for the oxidative steam reforming of methanol and CO oxidation |
title_full |
Gold nanoparticles-assisted sodium borohydride supported on titania as a catalyst for the oxidative steam reforming of methanol and CO oxidation |
title_fullStr |
Gold nanoparticles-assisted sodium borohydride supported on titania as a catalyst for the oxidative steam reforming of methanol and CO oxidation |
title_full_unstemmed |
Gold nanoparticles-assisted sodium borohydride supported on titania as a catalyst for the oxidative steam reforming of methanol and CO oxidation |
title_sort |
gold nanoparticles-assisted sodium borohydride supported on titania as a catalyst for the oxidative steam reforming of methanol and co oxidation |
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2023 |
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https://repository.li.mahidol.ac.th/handle/123456789/85068 |
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1781414936178589696 |