Quantitatively Relating Diffusion and Reaction for Shaping Particles

• DOI: 10.1021/acs.cgd.6b00171
• Publication Date: 2016-04-01T14:23:58Z
• Authors: Tao Yang; Yongsheng Han
• Keywords: Reaction rate; Reaction–diffusion system

Chemical diffusion and reaction rates are two general kinetic factors involved in the formation of materials. They play an important role structure development In most cases, chemical coupled each other, which makes it difficult to differentiate their effects shaping Here we propose quantify by Damköhler number (Da) elucidate roles particles. Silver particles synthesized electrodeposition approach at different conditions. Both efficiency rate constants quantified, is calculated. If or rate-determining step materials, simple structures, such as polyhedrons irregular particles, usually formed. When interplay dominates development, complex dendrites, generated. The closely related Da values. On basis this finding, three growth modes put forward evaluated following studies.