Multicolour photochromism of TiO2 films loaded with silver nanoparticles

Photolatently modulable hydrogels using unilamellar titania nanosheets as photocatalytic crosslinkers

“…We suppose that this is why the hydrogel can be micropatterned with an excellent spatial resolution. For further expansion of this achievement, we attempted photo-micropatterning using the reduction of Ag þ into Ag nanoclusters 42,43 . Again, immobilized TiNSs, upon light exposure, allowed for successful replication of the masked pattern in the hydrogel matrix with black dots (Fig.…”

Titania–silver and alumina–silver composite nanoparticles: Novel, versatile synthesis, reaction mechanism and potential antimicrobial application

“…alumina [26], zirconia [27], silica [28] and NiO [29]) have been successfully incorporated on titania particles, rods, wires or mesh-like structures. TiO 2 -Ag has attracted particular attention for its non-toxic nature [30], catalytic activity [31,32] and shape-dependent optical properties under visible light [33,34]. Moreover the material could also achieve enhanced photocatalytic efficiency [35].…”

Photocatalytic colour switching of redox dyes for ink-free light-printable rewritable paper

“…However, only limited progresses have been made in this area because of some major challenges [20][21][22] : (i) colour switching often becomes much slower when dyes are present in solid media instead of solution, as their molecular mobility is markedly restricted 23 , (ii) many switchable dyes retain their colour for only several hours under ambient conditions, which is too short for reading, (iii) the toxicity of switchable dyes is often an issue for daily use and (iv) most switchable dyes involve complex synthesis and are therefore expensive. As a result, it is of high interest to develop rewritable papers based on new colour switching mechanisms 24,25 .…”