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Composition‐Controlled Synthesis of Bismuth Vanadate Photocatalysts via a Facile Electrochemical Method
Author(s) -
Li Xuyun,
Qian Bei,
Li Jianzhong,
Song Zuwei
Publication year - 2016
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.14556
Subject(s) - bismuth vanadate , photocatalysis , crystallinity , electrochemistry , electrolyte , materials science , bismuth , monoclinic crystal system , rhodamine b , vanadate , chemical engineering , inorganic chemistry , nuclear chemistry , chemistry , crystal structure , catalysis , electrode , composite material , metallurgy , organic chemistry , engineering
Bismuth vanadate compounds including BiVO 4 , Bi 25 VO 40 , and the composite Bi 25 VO 40 /Bi 7 V 11 O 9 with photocatalytic properties were firstly synthesized via a facile electrochemical strategy. The amount of NaOH in the electrolyte and electric currents were discovered to be crucial variables to the composition, morphology, and crystallinity of the products. Monoclinic phase BiVO 4 and Bi 25 VO 40 with sillenite structure can be obtained at 2 A with NaOH concentration of 0–10 −4 and 0.1–0.4 M , respectively. The acquirement of Bi 25 VO 40 /Bi 7 V 11 O 9 can be achieved with electric current 3–5 A in an electrolyte containing 0.4 M NaOH. All the electrosynthesized samples exhibit good visible‐light‐driven photocatalytic activity in the degradation of rhodamine B, much higher than that of the commercial TiO 2 (P25).