Flexible transparent self-standing binderless clay film prepared by hydrothermally-treated synthetic clay

Barrier Properties of Synthetic Clay with a Kilo‐Aspect Ratio

“…For the sake of completeness, it should be mentioned that post-synthesis/genesis treatment might be benefi cial but obviously increases production costs: A hydrothermal method was described to signifi cantly increase L of a synthetic smectite (stevensite) by repeated heating-cooling cycles (4-6 cycles, each 18 h at 400 ° C). [ 19 ] In contrast to low temperature genesis/synthesis routes, high-temperature melt synthesis of fl uoro-clays offers signifi cant advantages e.g. larger platelets, less impurities and higher homogeneities.…”

Fabrication of nanostructured titania on flexible substrate by electrochemical anodization

“…Those were prepared by aqueous dispersion, degassing from the aqueous solution, casting in a tray and drying the solution. The precise method of clay film preparation was described in the literatures [21,22].…”

“…Therefore it is necessary to find transparent, flexible and heat resistant substrate that can withstand over 300 • C in order to sinter and crystallize amorphous titania into crystalline structure such as anatase, which allows fast electron transportation and increase the quantum efficiency in several applications [12][13][14][15]. Recently we developed self-standing clay films [21,22] with flexibility, light weight and high temperature heat resistance over 450 • C. Some kinds of the clay films [23][24][25] have enough transparency, which is suitable for solar cells. However, so far, nanostructured titania has not been fabricated on such excellent clay films yet.…”

Development of Clay‐Based Films

“…High‐aspect‐ratio smectite has shown good gas barrier properties ,,,. Smectite can be synthesized with the desired high aspect ratio by raising the temperature of hydrothermal synthesis ,. Smectite exfoliates in water producing uniform gel dispersions.…”