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SnO 2 Nanosheet–assembled Graded Continuous Film
Author(s) -
Masuda Yoshitake,
Kato Kazumi
Publication year - 2013
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12042
Subject(s) - materials science , nanosheet , supersaturation , superhydrophilicity , immersion (mathematics) , band gap , aqueous solution , composite material , contact angle , chemical engineering , nanotechnology , optics , optoelectronics , chemistry , physics , mathematics , pure mathematics , engineering , thermodynamics
S n O 2 nanosheet–assembled graded continuous films were successfully fabricated in aqueous solutions containing S n F 2 of 250 m M at 90°C. Thickness reached 1200 nm after immersion for 24 h. The nanosheets were 100–500 nm in in‐plane sheet size and 5–20 nm in thickness. The graded structures were caused by gradual change in supersaturation degree of the solutions. The films had a ‐axis orientation, antireflective effect, band gap of 3.63 eV, and superhydrophilic surfaces. In contrast, the films immersed for 20 m showed band gap of 4.04 eV and contact angle of 58°.