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Ion-exchange properties of High Pressure High Temperature synthetic diamond

Citation

Peristyy, A and Koreshkova, AN and Paull, B and Nesterenko, PN, Ion-exchange properties of High Pressure High Temperature synthetic diamond, Diamond and Related Materials, 75 pp. 131-139. ISSN 0925-9635 (2017) [Refereed Article]


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Abstract

The adsorption and chromatographic properties of microparticulated diamond (12 μm and 46 μm fractions) from high pressure and high temperature synthesis (HPHT diamond) are investigated, with a focus on their cation-exchange capacity. Several adsorbents were prepared, either by wet oxidation of the surface of HPHT with H2O2/H2SO4or HNO3/H2SO4 mixtures, or by oxidation in air at 700 C, or following a four-step reduction using LiAlH4 and n-butyllithium. The zeta-potential profiles as a function of pH and ion-exchange capacities were measured for the prepared adsorbents as well as isotherms of adsorption. The ion-exchange selectivity of oxidised HPHT diamond was studied towards alkali, alkaline-earth and transition metal cations.

Item Details

Item Type:Refereed Article
Keywords:Synthetic diamond, Adsorption, Metal cations, Ion-exchange, Liquid chromatography,
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
Author:Peristyy, A (Dr Anton Peristyy)
Author:Koreshkova, AN (Ms Aleksandra Koreshkova)
Author:Paull, B (Professor Brett Paull)
Author:Nesterenko, PN (Professor Pavel Nesterenko)
ID Code:115311
Year Published:2017
Funding Support:Australian Research Council (DP150102608)
Deposited By:Chemistry
Deposited On:2017-03-16
Last Modified:2017-03-20
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