Diffusion of Nicotinamide Adenine Dinuncleotide in Calcium Alginate Hydrogel Beads Doped with Carbon and Silica Nanotubes

Autor:	and Weikang Yuan, Songwei Xu, Ting Wang, Zhongyi Jiang, Yang Lu
Rok vydání:	2005
Předmět:	Calcium alginate Dopant Nicotinamide General Chemical Engineering Diffusion chemistry.chemical_element Nanoparticle Nanotechnology General Chemistry Carbon nanotube law.invention chemistry.chemical_compound chemistry law Graphite Carbon Nuclear chemistry
Zdroj:	Journal of Chemical & Engineering Data. 50:1319-1323
ISSN:	1520-5134 0021-9568
DOI:	10.1021/je0500476
Popis:	Alginate gel beads doped with nanotubes or nanoparticles were prepared using four kinds of dopants: carbon nanotubes (CNTs), silica nanotubes, graphite, or silica nanoparticles (SiO2). The effective diffusion coefficients (De) of reduced nicotinamide adenine dinuncleotide (NADH) in hybrid gels were calculated using an unsteady-state model developed by Nguyen and Luong. The maximum De values of NADH in the four kinds of hybrid gels obey the following sequence: De (CNTs-alginate) > De (silica nanotubes-alginate) > De (SiO2-alginate) > De (graphite-alginate). The effect of the dopant concentration on De was examined at five dopant concentration levels (0.3, 0.5, 0.9, and 1.25) g/L. For the CNTs-alginate and silica nanotubes-alginate gels, the maximum De values of NADH were obtained at 0.3 g/L and 0.9 g/L dopant concentrations, respectively. For the silica-alginate and graphite-alginate gels, the maximum De values of NADH were obtained at 0.5 g/L dopant concentration. The maximum De value of NADH in the CNT...
Databáze:	OpenAIRE
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