Molecular imprinting of a cellulose/silica composite with caffeine and its characterization

Rajinder S. Gill, Manuel Marquez, Gustavo Larsen

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

A molecularly imprinted "paper" (MIP) based on molecular imprinting of caffeine on cellulose/silica composites was successfully produced. Several techniques such as diffuse reflectance infrared spectroscopy (DRIFTS), transmission Fourier transform infrared (FTIR) spectroscopy using demountable path length cell, liquid-phase adsorption rate measurements, scanning electron microscopy, and BET specific surface area tests were used to characterize these MIP composites. These materials not only show enhanced binding capabilities towards the template molecules (caffeine) in comparison to blank experiments, but also were found to discriminate between theophylline and caffeine with relatively good selectivity. A cellulose:silica ratio of 4:2 was found to be close to optimal.

Original languageEnglish (US)
Pages (from-to)129-135
Number of pages7
JournalMicroporous and Mesoporous Materials
Volume85
Issue number1-2
DOIs
StatePublished - Oct 23 2005

Keywords

  • Cellulose
  • Cellulose/silica composite
  • Fiber
  • Filter
  • Silica

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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