Nanocrystal assembled SnO2 particles were synthesized in aqueous solutions. The particles showed high BET surface area of 276m2/g. It was much higher than that of our previous studies. BJH analyses indicated that the particles had pores of about 2–5nm. The particles included two kinds of morphologies. The first particles were about 300–1000nm in diameter, which were assemblies of acicular crystals of 5–10nm in width and 100–200nm in length. They contributed high BET surface area. The second particles were about 10,000–3000nm in diameter, which were assemblies of ellipse crystals of 100–200 in width and 200–400nm in length. The ellipse crystals consisted of sheet crystals. They connected with a certain angle and arranged their long direction parallel.
Graphical Abstract
Graphical abstract Highlights
Acicular crystal assembled SnO2 particles and ellipse crystal assembled SnO2 particles were synthesized in the aqueous solutions. They showed high BET surface area of 276m2/g.
► Unique SnO2 nanocrystals were synthesized in an aqueous solution. ► They were acicular crystals and ellipse crystals. ► They had high BET surface area of 276m2/g.
| Authors: |
|
Yoshitake Masuda, Tatsuki Ohji, Kazumi Kato |
| Journal: |
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Journal of Solid State Chemistry
|
| Year: |
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2012 |
| DOI: |
|
10.1016/j.jssc.2011.11.029 |
| Publication date: |
|
23-04-2012 |