Summer School on Computational and Experimental Photoelectron Spectroscopy

Microstructural evolution of CuO, WO3 and CuO-WO3 nanoparticles-based films studied by XPS

29 Jul 2026, 16:50

20m

Physicum A106 (Institute of Physics, University of Tartu)

Oral

Speaker

Michal Procházka (New Technologies Research Centre, University of West Bohemia in Pilsen, Univerzitní 8, 301 00 Pilsen, Czech Republic)

Description

Interest in clean and sustainable technologies is rapidly growing and hydrogen is widely used in this field. With this development, more emphasis is placed on hydrogen gas sensors as hydrogen poses significant risks due to its explosive nature and flammability [1].
Structural parameters and surface properties plays a significant role in interaction of gas with sensor material [2]. Therefore, the nanoparticles of various materials are more and more explored.
To understand the surface evolution after annealing in the air we measured XRD, SEM and XPS of CuO, WO3 and CuWO nanoparticles-based films prepared by magnetron-based gas aggregation technique.

[1] P. S. Chauhan, S. Bhattacharya, Hydrogen gas sensing methods, materials, and approach to achieve parts per billion level detection: A review, Int. J. Hydrogen Energy. 44 (2019) 26076–26099. https://doi.org/10.1016/j.ijhydene.2019.08.052.

[2] H. Zhao, Y. Wang, Y. Zhou, Accelerating the Gas–Solid Interactions for Conductometric Gas Sensors: Impacting Factors and Improvement Strategies, Materials (Basel). 16 (2023). https://doi.org/10.3390/ma16083249.