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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...

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Main Authors: 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.
Format: Article
Language:English
Published: American Chemical Society 2014
Online Access:http://psasir.upm.edu.my/id/eprint/37856/1/High%20activity%20redox%20catalysts%20synthesized%20by%20chemical%20vapor%20impregnation.pdf
http://psasir.upm.edu.my/id/eprint/37856/
http://pubs.acs.org/doi/abs/10.1021/nn405757q
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spelling my.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
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
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.
format Article
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.
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
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.
title High activity redox catalysts synthesized by chemical vapor impregnation
title_short 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_sort high activity redox catalysts synthesized by chemical vapor impregnation
publisher American Chemical Society
publishDate 2014
url http://psasir.upm.edu.my/id/eprint/37856/1/High%20activity%20redox%20catalysts%20synthesized%20by%20chemical%20vapor%20impregnation.pdf
http://psasir.upm.edu.my/id/eprint/37856/
http://pubs.acs.org/doi/abs/10.1021/nn405757q
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score 13.211869

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