Pattern Formation in Heterostructured Gel by the Ferrocyanide-Iodate-Sulfite Reaction

Tomonaga Ueno; Ryo Yoshida

doi:10.1021/acs.jpca.9b02264

Pattern Formation in Heterostructured Gel by the Ferrocyanide-Iodate-Sulfite Reaction

J Phys Chem A. 2019 Jun 20;123(24):5013-5018. doi: 10.1021/acs.jpca.9b02264. Epub 2019 Jun 10.

Authors

Tomonaga Ueno¹, Ryo Yoshida²

Affiliations

¹ Department of Chemical Systems Engineering, Graduate School of Engineering , Nagoya University , Furocho, Chikusa-ku, Nagoya 464-8603 , Japan.
² Department of Materials Engineering, School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-8656 , Japan.

PMID: 31140801
DOI: 10.1021/acs.jpca.9b02264

Abstract

Pattern formation in the reaction-diffusion systems for the ferrocyanide-iodate-sulfite reaction has been investigated. Previous studies have been conducted in a uniform medium. However, in this study, we reported the pattern formation in heterostructured gels with different network densities. The chemical states of the gel depend on the diffusivity, which in turn depends on the network density of the gel. Consequently, a pH pattern reflecting the heterostructured gel emerged. Furthermore, adjusting the condition produces novel patterns in the heterostructured gel.