Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Porous ZnO-ZnAl2O4-CuO Nanocomposites Synthesized by Polymer-Salt Method for Photocatalytic Water Purification and Splitting

Version 1 : Received: 15 February 2023 / Approved: 17 February 2023 / Online: 17 February 2023 (09:19:50 CET)

How to cite: Shelemanov, A.; Tincu, A.; Evstropiev, S.; Nikonorov, N.; Vasilyev, V. Porous ZnO-ZnAl2O4-CuO Nanocomposites Synthesized by Polymer-Salt Method for Photocatalytic Water Purification and Splitting. Preprints 2023, 2023020308. https://doi.org/10.20944/preprints202302.0308.v1 Shelemanov, A.; Tincu, A.; Evstropiev, S.; Nikonorov, N.; Vasilyev, V. Porous ZnO-ZnAl2O4-CuO Nanocomposites Synthesized by Polymer-Salt Method for Photocatalytic Water Purification and Splitting. Preprints 2023, 2023020308. https://doi.org/10.20944/preprints202302.0308.v1

Abstract

In this work, the adsorption and photocatalytic properties of ZnO-ZnAl2O4 nanosized composites synthesized by the polymer-salt method have been studied. To evaluate the efficiency of adsorption, experiments were carried out on the decolorization of aqueous solutions of the Chicago Sky Blue diazo dye. The adsorption process is divided into two stages, at the first stage the dye is rapidly adsorbed on the outer surface of the composite particles, at the second stage the dye diffuses into the pores of the material. It was noted that the rate of photocatalytic decomposition of the dye is higher than the rate of the adsorption process, which indicates the occurrence of photocatalytic decomposition of dye molecules both on the surface of the composites and in the liquid phase. With an increase in the light intensity, the photocatalytic process is significantly accelerated, linearly at low intensities, and at high intensities the dependence becomes a power law.

Keywords

adsorption; photocatalysis; kinetics; ZnO; nanoparticle

Subject

Chemistry and Materials Science, Nanotechnology

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.