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

Anne Vuorema, Sara Shariki, Mika Sillanpää, Wim Thielemans, Geoffrey W. Nelson, John S. Foord, Sara E.C. Dale, Simon Bending, Frank Marken

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)9857-9862
Number of pages6
JournalPhysical Chemistry Chemical Physics
Issue number20
Publication statusPublished - 28 May 2011
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


Dive into the research topics of 'Enhanced TiO2 surface electrochemistry with carbonised layer-by-layer cellulose-PDDA composite films'. Together they form a unique fingerprint.

Cite this