TY - JOUR

T1 - Strategy for Patterning Titania Dendrites by Gas-Solution Interaction at Droplet Surfaces

AU - Гулина, Лариса Борисовна

AU - Сенега, Полина Павловна

AU - Толстой, Валерий Павлович

PY - 2023/9/8

Y1 - 2023/9/8

N2 - Interaction of the solution droplet surface with gaseous components of the environment can lead to the formation of highly ordered patterns, such as dendrites. Here, we show that these structures can be spontaneously created during the open-air interaction of aqueous solution drop of titanium(III) salt with gaseous NH 3 at the contact boundary thereof. The conditions have been identified under which radially ordered dendritic patterns can form on the surface of the TiCl 3 solution droplet. The formation of these self-organized dendrite patterns can be attributed to the surface instability manifesting in Marangoni thermal flows in a droplet occurring during open-air fabrication. The composition of as-synthesized structures corresponds to coprecipitated crystalline NH 4Cl and amorphous TiO 2 nH 2O. After thermal treatment at 450 °C, TiO 2 with the anatase crystal lattice is formed; meanwhile, the ordered dendrite patterns are preserved.

AB - Interaction of the solution droplet surface with gaseous components of the environment can lead to the formation of highly ordered patterns, such as dendrites. Here, we show that these structures can be spontaneously created during the open-air interaction of aqueous solution drop of titanium(III) salt with gaseous NH 3 at the contact boundary thereof. The conditions have been identified under which radially ordered dendritic patterns can form on the surface of the TiCl 3 solution droplet. The formation of these self-organized dendrite patterns can be attributed to the surface instability manifesting in Marangoni thermal flows in a droplet occurring during open-air fabrication. The composition of as-synthesized structures corresponds to coprecipitated crystalline NH 4Cl and amorphous TiO 2 nH 2O. After thermal treatment at 450 °C, TiO 2 with the anatase crystal lattice is formed; meanwhile, the ordered dendrite patterns are preserved.

KW - граница раздела жидкость–газ,

KW - капля

KW - диоксид титана

KW - фотокатализ

UR - https://www.mendeley.com/catalogue/c7986992-90d9-3774-892c-6bc1c23366d3/

U2 - 10.1021/acsomega.3c04459

DO - 10.1021/acsomega.3c04459

M3 - Article

C2 - 37744820

VL - 8

SP - 33831

EP - 33837

JO - ACS Omega

JF - ACS Omega

SN - 2470-1343

IS - 37

ER -