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Preparation, characterisation and modification of carbon-based monolithic rods for chromatographic applications


Eltmimi, AH and Barron, L and Rafferty, A and Hanrahan, JP and Fedyanina, O and Nesterenko, E and Nesterenko, PN and Paull, B, Preparation, characterisation and modification of carbon-based monolithic rods for chromatographic applications, Journal of Separation Science, 33, (9) pp. 1231-1243. ISSN 1615-9306 (2010) [Refereed Article]

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DOI: doi:10.1002/jssc.200900845


A range of porous carbon-based monolithic (PCM) rods with flow-through pore sizes of 1, 2, 5 and 10 m, were produced using a silica particle template method. The rods were characterised using SEM and energy-dispersive X-ray spectroscopy, BET surface area and porous structure analysis, dilatometry and thermal gravimetry. SEM evaluation of the carbon monolithic structures revealed an interconnected rigid bimodal porous structure and energy-dispersive X-ray spectroscopy analysis verified the quantitative removal of the embedded silica beads. The specific surface areas of the 1, 2, 5 and 10 m rods were 178, 154, 84 and 125 m2/g after pyrolysis and silica removal, respectively. Shrinkage of the monolithic rods during pyrolysis is proportional to the particle size of the silica used and ranged from 9 to 12%. Mercury porosimetry showed a narrow distribution of pore sizes, with an average of 700 nm for the 1 m carbon monolith. The suitability of bare and surface oxidised PCM rods for the use as a stationary phase for reversed and normal phase LC was explored. The additional modification of PCM rods with gold micro-particles followed by 6-mercaptohexanoic acid was performed and ion-exchange properties were evaluated.

Item Details

Item Type:Refereed Article
Keywords:Gold micro-particles � LC porous carbon monoliths � Silica gel template
Research Division:Chemical Sciences
Research Group:Analytical chemistry
Research Field:Separation science
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the chemical sciences
UTAS Author:Fedyanina, O (Ms Olga Fedyanina)
UTAS Author:Nesterenko, PN (Professor Pavel Nesterenko)
UTAS Author:Paull, B (Professor Brett Paull)
ID Code:63379
Year Published:2010
Web of Science® Times Cited:18
Deposited By:Austn Centre for Research in Separation Science
Deposited On:2010-05-03
Last Modified:2015-01-20
Downloads:3 View Download Statistics

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