Jump to main content
Jump to site search

Issue 20, 2011
Previous Article Next Article

Enhanced TiO2 surface electrochemistry with carbonised layer-by-layer cellulose-PDDA composite films

Author affiliations

Abstract

In this report we demonstrate a versatile (and potentially low-cost) cellulose nano-whisker-based surface carbonisation method that allows well-defined films of TiO2 nanoparticles surface-modified with carbon to be obtained. In a layer-by-layer electrostatic deposition process based on TiO2 nanoparticles, cellulose nano-whiskers, and poly(diallyl-dimethylammonium) or PDDA are employed to control the ratio of surface carbon to TiO2. Characterisation based on optical, AFM, XRD, and XPS methods is reported. Electrochemical measurements suggest improved access to surface states, dopamine binding at the anatase surface, and surface redox cycling aided by the thin amorphous carbon film in mesoporous TiO2. In future, the amorphous carbon layer method could be applied for surface processes for a wider range of semiconductor or insulator surfaces.

Graphical abstract: Enhanced TiO2 surface electrochemistry with carbonised layer-by-layer cellulose-PDDA composite films

Back to tab navigation

Publication details

The article was received on 27 Feb 2011, accepted on 25 Mar 2011 and first published on 18 Apr 2011


Article type: Paper
DOI: 10.1039/C1CP20532C
Citation: Phys. Chem. Chem. Phys., 2011,13, 9857-9862
  •   Request permissions

    Enhanced TiO2 surface electrochemistry with carbonised layer-by-layer cellulose-PDDA composite films

    A. Vuorema, S. Shariki, M. Sillanpää, W. Thielemans, G. W. Nelson, J. S. Foord, S. E. C. Dale, S. Bending and F. Marken, Phys. Chem. Chem. Phys., 2011, 13, 9857
    DOI: 10.1039/C1CP20532C

Search articles by author

Spotlight

Advertisements