Combining Photocatalysis and Optical Fiber Technology toward Improved Microreactor Design for Hydrogen Generation with Metallic Nanoparticles

Matthew E. Potter, Daniel J. Stewart, Alice E. Oakley, Richard P. Boardman, Tom Bradley, Pier J.A. Sazio, Robert Raja

Research output: Contribution to journalArticlepeer-review

14 Citations (SciVal)

Abstract

The use of solar energy to activate chemical pathways in a sustainable manner drives the development in photocatalysis. While catalyst optimization is a major theme in this pursuit, the development of novel photocatalytic reactors to enhance productivity is also imperative. In this work we combine, for the first time, microstructured optical fiber technology with photocatalysis, creating a photocatalytic microreactor coated with TiO2, decorated with palladium nanoparticles. In doing so, we create a system capable of effectively combining photons, liquids, and gases within a monolithic, highly confined, transparent silica geometry. We utilize a range of characterization techniques to selectively focus on the photocatalyst, that resides exclusively within the internal capillaries of this system. In doing so, we validate our design approach and demonstrate the ability to simultaneously control both nanoparticle size and metal content. Further, we justify our unique design, showing its activity in photocatalytic hydrogen generation from water. In doing so highlights the importance in developing light propagation properties from optical fibers and the significant potential of this technology in the expansive photocatalysis landscape.

Original languageEnglish
Pages (from-to)714-722
Number of pages9
JournalACS Photonics
Volume7
Issue number3
DOIs
Publication statusPublished - 18 Mar 2020

Keywords

  • catalysis
  • hydrogen production
  • nanoparticles
  • optical fiber
  • photonics
  • solar energy
  • tomography

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biotechnology
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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