Acoustically assisted photo-catalysis employing surface acoustic waves

Research Topic

Acoustic fields can catalyze chemical reactions. This project explores SAW-assisted photocatalysis for the efficient splitting of water molecules. The experiments will be carried out in a mini chemical reactor on a semiconductor hybrid chip sustain a SAW.


The main goals of the project are to understand and realize acoustically assisted (photo)-catalysis, employing SAW on semiconductor hybrid chips. Here, we investigate experimentally the influence of SAW on water splitting reaction. First, Semiconductor materials TiO2 and C3N4 with Pt doping and without doping are synthesized, then we will check the photocatalytic properties of these material with SAW and without SAW. We will compare thin planar films with micro- and nanostructured surfaces (high resolution lith. at UCAM), nanosized particles and mesoporous solids of the same catalyst, e.g. TiO2. We will study the frequency-, wavelength- and amplitude dependence (CNR) of the catalytic rates and efficiencies (high frequency IDTs fabrication at TWENTE). Acoustic resonators and phononic crystals will be employed to optimize the coupling to the catalyst and SAW intensities (UVEG, UAU2).


Sixuan Wang

Host: Universität Augsburg – Institut für Physik

Scientific Background

I am a chemist who graduated from Central China Normal University. My research fields are about inorganic chemistry, photo-chemistry and material sciences. During my master period, I investigated the photo-catalysis properties of titanium dioxide nano-film.

Conference/Workshop Contributions
    • SAW- assisted water splitting
      S. Wang, R. Herrmann, A. Wixforth, C. Westerhausen
      SAWtrain Summer School: Physics and applications of GHz vibrations in semiconductors (Cargèse, France, July 11-21, 2017) | Internal