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Highly Enhanced Surface Area of Tin Oxide Nanocrystals
Author(s) -
Masuda Yoshitake,
Ohji Tatsuki,
Kato Kazumi
Publication year - 2010
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2010.03680.x
Subject(s) - bet theory , tin oxide , transmission electron microscopy , nanocrystal , materials science , specific surface area , tin , oxide , chemical engineering , selected area diffraction , aqueous solution , adsorption , diffraction , nanotechnology , chemistry , metallurgy , catalysis , optics , biochemistry , engineering , physics
Tin oxide nanocrystals with high surface area were first synthesized in aqueous solutions at 50°C. The Brunauer–Emmett–Teller (BET) surface area successfully reached 194 m 2 /g. It was much higher than that of SnO 2 (BET 47.2 m 2 /g), SnO 2 (BET 25.9 m 2 /g), SnO 2 (BET 23 m 2 /g), and In 2 O 3 –SnO 2 (BET 3–6 m 2 /g). N 2 adsorption characteristics revealed that they had pores of 1–3 nm, which contributed to the high surface area. Transmission electron microscopy, electron diffraction, and X‐ray diffraction indicated the morphology, crystal structure, and chemical composition of nanocrystals. Novel process allowed us to avoid sintering and deformation of the crystals, and hence realized a high surface area and unique morphology.