High activity redox catalysts synthesized by chemical vapor impregnation
The use of precious metals in heterogeneous catalysis relies on the preparation of small nanoparticles that are stable under reaction conditions. To date, most conventional routes used to prepare noble metal nanoparticles have drawbacks related to surface contamination, particle agglomeration, and r...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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American Chemical Society
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/37856/1/High%20activity%20redox%20catalysts%20synthesized%20by%20chemical%20vapor%20impregnation.pdf |
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| author | Forde, Michael M. Kesavan, Lokesh Saiman, Mohd Izham He, Qian Dimitratos, Nikolaos Lopez-Sanchez, Jose Antonio Jenkins, Robert L. Taylor, Stuart H. Kiely, Christopher J. Hutchings, Graham J. |
| author_facet | Forde, Michael M. Kesavan, Lokesh Saiman, Mohd Izham He, Qian Dimitratos, Nikolaos Lopez-Sanchez, Jose Antonio Jenkins, Robert L. Taylor, Stuart H. Kiely, Christopher J. Hutchings, Graham J. |
| author_sort | Forde, Michael M. |
| collection | UPM |
| description | The use of precious metals in heterogeneous catalysis relies on the preparation of small nanoparticles that are stable under reaction conditions. To date, most conventional routes used to prepare noble metal nanoparticles have drawbacks related to surface contamination, particle agglomeration, and reproducibility restraints. We have prepared titania-supported palladium (Pd) and platinum (Pt) catalysts using a simplified vapor deposition technique termed chemical vapor impregnation (CVI) that can be performed in any standard chemical laboratory. These materials, composed of nanoparticles typically below 3 nm in size, show remarkable activity under mild conditions for oxidation and hydrogenation reactions of industrial importance. We demonstrate the preparation of bimetallic Pd–Pt homogeneous alloy nanoparticles by this new CVI method, which show synergistic effects in toluene oxidation. The versatility of our CVI methodology to be able to tailor the composition and morphology of supported nanoparticles in an easily accessible and scalable manner is further demonstrated by the synthesis of Pdshell–Aucore nanoparticles using CVI deposition of Pd onto preformed Au nanoparticles supported on titania (prepared by sol immobilization) in addition to the presence of monometallic Au and Pd nanoparticles. |
| first_indexed | 2024-03-06T08:39:34Z |
| format | Article |
| id | upm.eprints-37856 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T08:39:34Z |
| publishDate | 2014 |
| publisher | American Chemical Society |
| record_format | dspace |
| spelling | upm.eprints-378562020-04-15T16:50:50Z http://psasir.upm.edu.my/id/eprint/37856/ High activity redox catalysts synthesized by chemical vapor impregnation Forde, Michael M. Kesavan, Lokesh Saiman, Mohd Izham He, Qian Dimitratos, Nikolaos Lopez-Sanchez, Jose Antonio Jenkins, Robert L. Taylor, Stuart H. Kiely, Christopher J. Hutchings, Graham J. The use of precious metals in heterogeneous catalysis relies on the preparation of small nanoparticles that are stable under reaction conditions. To date, most conventional routes used to prepare noble metal nanoparticles have drawbacks related to surface contamination, particle agglomeration, and reproducibility restraints. We have prepared titania-supported palladium (Pd) and platinum (Pt) catalysts using a simplified vapor deposition technique termed chemical vapor impregnation (CVI) that can be performed in any standard chemical laboratory. These materials, composed of nanoparticles typically below 3 nm in size, show remarkable activity under mild conditions for oxidation and hydrogenation reactions of industrial importance. We demonstrate the preparation of bimetallic Pd–Pt homogeneous alloy nanoparticles by this new CVI method, which show synergistic effects in toluene oxidation. The versatility of our CVI methodology to be able to tailor the composition and morphology of supported nanoparticles in an easily accessible and scalable manner is further demonstrated by the synthesis of Pdshell–Aucore nanoparticles using CVI deposition of Pd onto preformed Au nanoparticles supported on titania (prepared by sol immobilization) in addition to the presence of monometallic Au and Pd nanoparticles. American Chemical Society 2014 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/37856/1/High%20activity%20redox%20catalysts%20synthesized%20by%20chemical%20vapor%20impregnation.pdf Forde, Michael M. and Kesavan, Lokesh and Saiman, Mohd Izham and He, Qian and Dimitratos, Nikolaos and Lopez-Sanchez, Jose Antonio and Jenkins, Robert L. and Taylor, Stuart H. and Kiely, Christopher J. and Hutchings, Graham J. (2014) High activity redox catalysts synthesized by chemical vapor impregnation. ACS Nano, 8 (1). pp. 957-969. ISSN 1936-0851; ESSN: 1936-086X http://pubs.acs.org/doi/abs/10.1021/nn405757q 10.1021/nn405757q |
| spellingShingle | Forde, Michael M. Kesavan, Lokesh Saiman, Mohd Izham He, Qian Dimitratos, Nikolaos Lopez-Sanchez, Jose Antonio Jenkins, Robert L. Taylor, Stuart H. Kiely, Christopher J. Hutchings, Graham J. High activity redox catalysts synthesized by chemical vapor impregnation |
| title | High activity redox catalysts synthesized by chemical vapor impregnation |
| title_full | High activity redox catalysts synthesized by chemical vapor impregnation |
| title_fullStr | High activity redox catalysts synthesized by chemical vapor impregnation |
| title_full_unstemmed | High activity redox catalysts synthesized by chemical vapor impregnation |
| title_short | High activity redox catalysts synthesized by chemical vapor impregnation |
| title_sort | high activity redox catalysts synthesized by chemical vapor impregnation |
| url | http://psasir.upm.edu.my/id/eprint/37856/1/High%20activity%20redox%20catalysts%20synthesized%20by%20chemical%20vapor%20impregnation.pdf |
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