Electro-deposition of thin cellulose films at boron-doped diamond substrates

M J Bonne, M Helton, K Edler, F Marken

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Cellulose films of variable thickness are electro-deposited from aqueous alkaline thiourea solution onto polished boron-doped diamond substrates in an anodic process. Films with "net-like" topography are formed and shown to consist of both cellulose-I and cellulose-II components. Properties of these films are investigated. When immersed in aqueous electrolyte solution, ion partitioning into the electro-deposited cellulose films occurs. The accumulation and release of two aqueous redox systems, Ru(NH3)(6)(3+/2+) and methylviologen(2+/+), is reported. Relatively slow diffusion of these cations is observed within cellulose (approximately 5 orders of magnitude slower when compared to diffusion in aqueous media). For the methylviologen(2+/+) redox system partitioning leads to irreversibility in the voltammetric response and to the preferred formation of aggregates immobilized within the cellulose film. (c) 2006 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)42-48
Number of pages7
JournalElectrochemistry Communications
Volume9
Issue number1
DOIs
Publication statusPublished - 2007

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