Photocatalytic activity of glass ceramics containing Nasicon-type crystals

Journal Article · Tue Jan 15 04:00:00 EST 2013 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2012.10.009· OSTI ID:22215773

Fu, Jie ^[1]

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1. R and D Department, Ohara Inc., Sagamihara-shi, Kanagawa 252-5286 (Japan)

Graphical abstract: Display Omitted Highlights: ► Glass ceramics containing Nasicon-type crystals were prepared. ► The glass ceramics showed photocatalytic activity under UV irradiation. ► Higher activity was observed in the MgTi{sub 4}(PO{sub 4}){sub 6}- and CaTi{sub 4}(PO{sub 4}){sub 6}-containing glass ceramics. -- Abstract: Glass ceramics were prepared by heat-treating MO–TiO{sub 2}–P{sub 2}O{sub 5} (M = Mg, Ca, Sr and Ba) and R{sub 2}O–TiO{sub 2}–P{sub 2}O{sub 5}–SiO{sub 2} (R = Li, Na and K) glasses, and their photocatalytic activity was investigated. The crystalline phases precipitated in the glasses were only Nasicon-type crystals, MTi{sub 4}(PO{sub 4}){sub 6} or RTi{sub 2}(PO{sub 4}){sub 3}. Decomposition experiments of both methylene blue (MB) and acetaldehyde showed that the glass ceramics exhibited effective photocatalytic activity. The activity did not depend on the radius of the M{sup 2+} or R{sup +} ion, and higher activity was observed in the MgTi{sub 4}(PO{sub 4}){sub 6} and CaTi{sub 4}(PO{sub 4}){sub 6} precipitated glass ceramics.

• OSTI ID: 22215773
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 1 Vol. 48; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERAMICS
CRYSTALS
DECOMPOSITION
GLASS
IRRADIATION
METHYLENE BLUE
PHOSPHATES
PHOTOCATALYSIS