• Title, Summary, Keyword: $BaCrO_4$ nanoparticles

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Graphene/BaCrO4 Nanocomposites Catalyzed Photodegradation and Kinetics Study of Organic Dyes

  • Kim, Keun Hyung;Ko, Weon Bae
    • Elastomers and Composites
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    • v.50 no.1
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    • pp.7-12
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    • 2015
  • The $BaCrO_4$ nanoparticles were synthesized from a 0.1 M $K_2CrO_4$ and 0.1 M $BaCO_3$ solution with stirring for 10 h. The product was washed several times with acetone and heated to $700^{\circ}C$ for 6 h. At that time, the color of mixture was a greenish yellow. The graphene/$BaCrO_4$ nanocomposites were prepared with graphene and $BaCrO_4$ nanoparticles by stirring in tetrahydrofuran and heated in an electric furnace at $700^{\circ}C$ for 2 h. The $BaCrO_4$ nanoparticles, graphene/$BaCrO_4$ and heated graphene/$BaCrO_4$ nanocomposites were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The graphene/$BaCrO_4$ nanocomposites and heated graphene/$BaCrO_4$ nanocomposites were evaluated as a photocatalyst and discussed about kinetics study for the degradation of organic dyes, such as methylene blue and rhodamine B under ultraviolet light irradiation at 254 nm.

Assembling Synthesis of Barium Chromate Nano-superstructures Using Eggshell Membrane as Template

  • Liu, Jin-Ku;Wu, Qing-Sheng;Ding, Ya-Ping;Yi, Yu
    • Bulletin of the Korean Chemical Society
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    • v.25 no.12
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    • pp.1775-1778
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    • 2004
  • The branch-like, feather-like $BaCrO_4$ nano-superstructures were synthesized with bioactive eggshell membrane as directing and assembly template. Studies on the two products revealed that they formed through the self-assembly of nanoparticles, and that the optical properties of the products were different from $BaCrO_4$ bulk materials.