Microcatalysis in Photonic Crystal Fibers

  • Author: Lois O'Leary
  • Published Date: 13 March 2013
  • Source / Publisher: ChemCatChem/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
thumbnail image: Microcatalysis in Photonic Crystal Fibers

Related Societies

Optofluidic microdevices where light and fluids can interact for spectroscopic or photoactivation purposes are excellent platforms for photocatalysis and in situ reaction analysis. Photonic crystal fiber (PCF) has emerged as a new class of optical fiber for such devices.

Bastian J. M. Etzold and co-workers, Excellence Cluster Engineering of Advanced Materials, Erlangen, Germany, describe how both homo- and heterogeneous catalysis are performed with ultra-high power densities at moderate laser powers in the new PCF design of cladding surrounding a waveguide of small core diameter (pictured). Chemical samples are introduced to micrometer-sized holes in the PCF, overcoming the limited light-sample interaction or leakage of light typical to conventional optical fibers.

Schematic of a conventional 1 cm cuvette and a 20 μm core kagomé hollow-core PCF (not to scale).

Dispersed catalytic systems in PCF enable advanced oxidation processes such as the degradation of organic pollutants. PCF-immobilized catalysts, for example in the supported ionic liquid phase, catalyze key reactions such as hydroformylations, hydrogenations, carbonylation, hydroaminations, Friedel-Crafts alkylations, and the water-gas shift reaction. Metal nanoparticles can also be deposited in PCFs, for example, gold or silver are used to form surface-enhanced Raman scattering-active fibers.

Ingeniously, this design, compared to the conventional centimeter-sized cuvettes, also improves quantitative photospectroscopic reaction analysis, enabling the detection of analytes in ultra-low concentrations.

Article Views: 3615

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission and consult our permission guidance prior to making your request

Follow on Facebook Follow on Twitter Follow on YouTube Follow on LinkedIn Follow on Instagram RSS Sign up for newsletters

Magazine of Chemistry Europe (16 European Chemical Societies) published by Wiley-VCH