DNA-directed growth of Pd nanocrystals on carbon nanotubes towards efficient oxygen reduction reactions

Unique DNA-promoted Pd nanocrystals on carbon nanotubes (Pd/DNA–CNTs) are synthesized for the first time, in which through its regularly arranged PO43− groups on the sugar–phosphate backbone, DNA directs the growth of ultrasmall Pd nanocrytals with an average size of 3.4 nm uniformly distributed on...

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Main Authors: Zhang, Lian Ying, Guo, Chun Xian, Cui, Zhiming, Guo, Jun, Dong, Zhili, Li, Chang Ming
Other Authors: School of Chemical and Biomedical Engineering
Format: Article
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/99585
http://hdl.handle.net/10220/12921
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-995852020-06-01T10:01:50Z DNA-directed growth of Pd nanocrystals on carbon nanotubes towards efficient oxygen reduction reactions Zhang, Lian Ying Guo, Chun Xian Cui, Zhiming Guo, Jun Dong, Zhili Li, Chang Ming School of Chemical and Biomedical Engineering School of Materials Science & Engineering Centre for Advanced Bionanosystems Unique DNA-promoted Pd nanocrystals on carbon nanotubes (Pd/DNA–CNTs) are synthesized for the first time, in which through its regularly arranged PO43− groups on the sugar–phosphate backbone, DNA directs the growth of ultrasmall Pd nanocrytals with an average size of 3.4 nm uniformly distributed on CNTs. The Pd/DNA–CNT catalyst shows much more efficient electrocatalytic activity towards oxygen reduction reaction (ORR) with a much more positive onset potential, higher catalytic current density and better stability than other Pd-based catalysts including Pd nanocrystals on carbon nanotubes (Pd/CNTs) without the use of DNA and commercial Pd/C catalyst. In addition, the Pd/DNA–CNTs catalyst provides high methanol tolerance. The high electrocatalytic performance is mainly contributed by the ultrasmall Pd nanocrystal particles grown directed by DNA to enhance the mass transport rate and to improve the utilization of the Pd catalyst. This work may demonstrate a universal approach to fabricate other superior metal nanocrystal catalysts with DNA promotion for broad applications in energy systems and sensing devices. 2013-08-02T06:37:55Z 2019-12-06T20:09:16Z 2013-08-02T06:37:55Z 2019-12-06T20:09:16Z 2012 2012 Journal Article Zhang, L. Y., Guo, C. X., Cui, Z., Guo, J., Dong, Z.,& Li, C. M. (2012). DNA-Directed Growth of Pd Nanocrystals on Carbon Nanotubes towards Efficient Oxygen Reduction Reactions. Chemistry - A European Journal, 18(49), 15693-15698. 0947-6539 https://hdl.handle.net/10356/99585 http://hdl.handle.net/10220/12921 10.1002/chem.201201571 en Chemistry - a European journal
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
description Unique DNA-promoted Pd nanocrystals on carbon nanotubes (Pd/DNA–CNTs) are synthesized for the first time, in which through its regularly arranged PO43− groups on the sugar–phosphate backbone, DNA directs the growth of ultrasmall Pd nanocrytals with an average size of 3.4 nm uniformly distributed on CNTs. The Pd/DNA–CNT catalyst shows much more efficient electrocatalytic activity towards oxygen reduction reaction (ORR) with a much more positive onset potential, higher catalytic current density and better stability than other Pd-based catalysts including Pd nanocrystals on carbon nanotubes (Pd/CNTs) without the use of DNA and commercial Pd/C catalyst. In addition, the Pd/DNA–CNTs catalyst provides high methanol tolerance. The high electrocatalytic performance is mainly contributed by the ultrasmall Pd nanocrystal particles grown directed by DNA to enhance the mass transport rate and to improve the utilization of the Pd catalyst. This work may demonstrate a universal approach to fabricate other superior metal nanocrystal catalysts with DNA promotion for broad applications in energy systems and sensing devices.
author2 School of Chemical and Biomedical Engineering
author_facet School of Chemical and Biomedical Engineering
Zhang, Lian Ying
Guo, Chun Xian
Cui, Zhiming
Guo, Jun
Dong, Zhili
Li, Chang Ming
format Article
author Zhang, Lian Ying
Guo, Chun Xian
Cui, Zhiming
Guo, Jun
Dong, Zhili
Li, Chang Ming
spellingShingle Zhang, Lian Ying
Guo, Chun Xian
Cui, Zhiming
Guo, Jun
Dong, Zhili
Li, Chang Ming
DNA-directed growth of Pd nanocrystals on carbon nanotubes towards efficient oxygen reduction reactions
author_sort Zhang, Lian Ying
title DNA-directed growth of Pd nanocrystals on carbon nanotubes towards efficient oxygen reduction reactions
title_short DNA-directed growth of Pd nanocrystals on carbon nanotubes towards efficient oxygen reduction reactions
title_full DNA-directed growth of Pd nanocrystals on carbon nanotubes towards efficient oxygen reduction reactions
title_fullStr DNA-directed growth of Pd nanocrystals on carbon nanotubes towards efficient oxygen reduction reactions
title_full_unstemmed DNA-directed growth of Pd nanocrystals on carbon nanotubes towards efficient oxygen reduction reactions
title_sort dna-directed growth of pd nanocrystals on carbon nanotubes towards efficient oxygen reduction reactions
publishDate 2013
url https://hdl.handle.net/10356/99585
http://hdl.handle.net/10220/12921
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