Journal
MATERIALS
Volume 2, Issue 4, Pages 1734-1761Publisher
MDPI
DOI: 10.3390/ma2041734
Keywords
layered compound; inorganic nanosheet; colloid; liquid crystal; sol-gel transition; clay; semiconductor photocatalyst
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Funding
- Japan Society for the Promotion of Science [20550171]
- Japan Atomic Energy Agency
- Nippon Sheet Glass Foundation for Materials Science and Engineering
- Grants-in-Aid for Scientific Research [20550171] Funding Source: KAKEN
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Inorganic layered crystals exemplified by clay minerals can be exfoliated in solvents to form colloidal dispersions of extremely thin inorganic layers that are called nanosheets. The obtained nanosheet colloids form lyotropic liquid crystals because of the highly anisotropic shape of the nanosheets. This system is a rare example of liquid crystals consisting of inorganic crystalline mesogens. Nanosheet colloids of photocatalytically active semiconducting oxides can exhibit unusual photoresponses that are not observed for organic liquid crystals. This review summarizes experimental work on the phase behavior of the nanosheet colloids as well as photochemical reactions observed in the clay and semiconducting nanosheets system.
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