Imaging of Chemical Kinetics at the Water-Water Interface in a Free-Flowing Liquid Flat-Jet

0557360 - ÚOCHB 2023 RIV US eng J - Journal Article
Schewe, Hanns Christian - Credidio, B. - Ghrist, A. M. - Malerz, S. - Ozga, C. - Knie, A. - Haak, H. - Meijer, G. - Winter, B. - Osterwalder, A.
Imaging of Chemical Kinetics at the Water-Water Interface in a Free-Flowing Liquid Flat-Jet.
Journal of the American Chemical Society. Roč. 144, č. 17 (2022), s. 7790-7795. ISSN 0002-7863. E-ISSN 1520-5126
Institutional support: RVO:61388963
Keywords : photoelectron-spectroscopy * x-ray * luminol
OECD category: Physical chemistry
Impact factor: 15, year: 2022
Method of publishing: Open access
https://doi.org/10.1021/jacs.2c01232

We present chemical kinetics measurements of the luminol oxidation chemiluminescence (CL) reaction at the interface between two aqueous solutions, using liquid jet technology. Free-flowing liquid microjets are a relatively recent development that have found their way into a growing number of applications in spectroscopy and dynamics. A variant thereof, called flat-jet, is obtained when two cylindrical jets of a liquid are crossed, leading to a chain of planar leaf-shaped structures of the flowing liquid. We here show that in the first leaf of this chain, the fluids do not exhibit turbulent mixing, providing a clean interface between the liquids from the impinging jets. We also show, using the example of the luminol CL reaction, how this setup can be used to obtain kinetics information from friction-less flow and by circumventing the requirement for rapid mixing by intentionally suppressing all turbulent mixing and instead relying on diffusion.
Permanent Link: http://hdl.handle.net/11104/0331399