Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Preparation of Nb2O5-Graphene Nanocomposites and Their Application in Photocatalytic Degradation of Organic Dyes

Nb2O5-Graphene나노복합체의 제조 및 유기염료 광촉매 분해반응의 응용성에 관한 연구

  • Received : 2014.11.03
  • Accepted : 2014.12.04
  • Published : 2014.12.31
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Abstract

Niobium pentoxide ($Nb_2O_5$) nanoparticles were synthesized using niobium (V) chloride and pluronic F108NF as the precursor and templating agent, respectively. The $Nb_2O_5$-graphene nanocomposites were placed in an electric furnace at $700^{\circ}C$ and calcined under Ar atmosphere for 2 h. The morphology, crystallinity, and photocatalytic degradation activity of the samples were characterized by X-ray diffraction, transmission electron microscopy, scanning electron microscopy, and UV-vis spectroscopy. The $Nb_2O_5$-graphene nanocomposites acted as a photocatalyst in the photocatalytic degradation of organic dyes under 254 nm UV light; the organic dyes used were methylene blue (MB), methyl orange (MO), rhodamine B (RhB), and brilliant green (BG). The photocatalytic degradation kinetics for the aforesaid dyes were determined in the presence of the $Nb_2O_5$-graphene nanocomposites.

Niobium pentoxide ($Nb_2O_5$) 나노입자는 niobium (V) chloride 와 pluronic F108NF를 전구체와 주형제로 사용하여 합성하였다. $Nb_2O_5$-graphene나노복합체는 아르곤 가스 분위기 전기로 조건에서 2시간 동안 $700^{\circ}C$로 가열하였다. 시료의 결정화도, 결정형태, 광촉매 분해 반응성은 X-ray diffraction, scanning electron microscopy, transmission electron microscopy, UV-vis spectroscopy를 사용하여 측정하였다. $Nb_2O_5$-graphene나노복합체는 254 nm의 자외선 조건에서 유기염료 광촉매 분해 반응의 광촉매로 사용되었다. 유기염료는 methylene blue (MB), methyl orange (MO), rhodamine B (RhB), brilliant green (BG)이 사용되었다. 또한 $Nb_2O_5$-graphene나노복합체를 사용하여 유기염료 광촉매 분해 반응의 반응 속도를 결정하였다.

Keywords

References

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