Article ID Journal Published Year Pages File Type
182280 Electrochemistry Communications 2007 7 Pages PDF
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)63+/2+ and methylviologen2+/+, 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 methylviologen2+/+ redox system partitioning leads to irreversibility in the voltammetric response and to the preferred formation of aggregates immobilized within the cellulose film.

Related Topics
Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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