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Materials & Design v.117, 2017년, pp.346 - 352   SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Hydrothermal topological synthesis and photocatalyst performance of orthorhombic Nb2O5 rectangle nanosheet crystals with dominantly exposed (010) facet

Wen, P. Ai, L. Liu, T. Hu, D. Yao, F.
  • 초록  

    The regular orthorhombic Nb 2 O 5 (O-Nb 2 O 5 ) rectangle nanosheets dominantly exposed (010) facet are synthesized by a hydrothermal topological reaction with a precursor of K 4 Nb 6 O 17 .4.5H 2 O (KNbO). The structure and morphology of the samples obtained at different temperatures and pH values of reacting solution are investigated. The results suggest that there are two topological reactions in this process. One is the acid-exchanging reaction transforming into H 4 Nb 6 O 17 .3H 2 O (HNbO) nanosheets from KNbO rectangle nanosheets, and the other is dehydration reaction transforming into O-Nb 2 O 5 rectangle nanosheets from HNbO nanosheets. And the {010} facets of O-Nb 2 O 5 crystal are transformed from the {010} facets of HNbO crystal in the ingenious topological reaction. The photoelectric performance of the obtained O-Nb 2 O 5 nanosheets is evaluated by decomposing water to H 2 under 370nm UV light illumination and measuring the accompanying photocurrent. The photocurrent density is 680nA.cm -2 generated by splitting water with O-Nb 2 O 5 nanosheets as photocatalyst, and it is 4.3 times of the contrast sample. The result indicates that the (010) facet of O-Nb 2 O 5 is one of the highest photocatalytic active surfaces and shows high photoelectric conversion efficiency. Thus, the O-Nb 2 O 5 nanosheets dominantly exposed (010) facet have potential applications in photocatalyst and photoelectric nanodevices.


  • 주제어

    Hydrothermal topochemical synthesis .   O-Nb2O5 rectangle nanosheets exposed (010) facet .   Crystal structure evolution .   Photoelectric performance.  

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