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      A new bismuth vanadate photocatalyst of Bi<sub>23</sub>V<sub>4</sub>O<sub>44.5</sub> nanoplates with layered δ-Bi<sub>2</sub>O<sub>3</sub> based fluorite-type superstructures

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      https://www.riss.kr/link?id=A107700014

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      <P><B>Abstract</B></P> <P>The work reports the large-scale synthesis and photocatalytic activity of Bi<SUB>23</SUB>V<SUB>4</SUB>O<SUB>44.5</SUB> nanoplates. The structural refinement w...

      <P><B>Abstract</B></P> <P>The work reports the large-scale synthesis and photocatalytic activity of Bi<SUB>23</SUB>V<SUB>4</SUB>O<SUB>44.5</SUB> nanoplates. The structural refinement was conducted in the layered δ-Bi<SUB>2</SUB>O<SUB>3</SUB> based superstructuLre. The detailed surface properties were characterized. Bi<SUB>23</SUB>V<SUB>4</SUB>O<SUB>44.5</SUB> shows efficient absorption in visible region with a band-gap of 2.384eV from the hybridization of Bi-6s and O-2p orbitals. Particularly, Bi<SUB>23</SUB>V<SUB>4</SUB>O<SUB>44.5</SUB> shows an efficient photodegradation for methylene blue (MB). The photocatalysis benefits from the layered B–O structure characteristic and the codoped defects of V<SUP>4+</SUP>/V<SUP>5+</SUP> ions in the lattices. Bi<SUB>23</SUB>V<SUB>4</SUB>O<SUB>44.5</SUB> nanoplates could be a potential photocatalyst.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Bi<SUB>23</SUB>V<SUB>4</SUB>O<SUB>44.5</SUB> nanoplates were prepared by the Pechini method. </LI> <LI> It has a narrow band-gap of 2.384eV from hybridization of Bi-6s and O-2p. </LI> <LI> Bi<SUB>23</SUB>V<SUB>4</SUB>O<SUB>44.5</SUB> has photocatalysis report visible-light-irradiation. </LI> <LI> Photocatalysis is due to layered δ-Bi<SUB>2</SUB>O<SUB>3</SUB>-like structure and codoped V<SUP>4+</SUP>/V<SUP>5+</SUP> ions. </LI> </UL> </P>

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