TY - JOUR
T1 - Crystallization and phase separation of tungsten oxidebismuth vanadate amorphous film by annealing in air
AU - Li, Chao
AU - Song, Haili
AU - Zhang, Yuanyuan
AU - Miao, Lei
AU - Qi, Ruijuan
AU - Huang, Rong
AU - Cui, Chengqiang
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China (Grant No. 61974042, 61874155 and 11774092), Guangdong Basic and Applied Basic Research Foundation (2020A1515110178).
Publisher Copyright:
© 2021 Institute of Physics Publishing. All rights reserved.
PY - 2021/9/8
Y1 - 2021/9/8
N2 - A WO3-BiVO4 amorphous film grown on the (001) yttria-stabilized zirconia (YSZ) substrate was annealed at 600 oC in air. The microstructures evolution was investigated by X-ray diffraction, scanning electron microscopy and high-resolution transmission electron microscopy. After annealed, the amorphous composite film crystalized into monoclinic BiVO4 and orthorhombic WO3. BiVO4 epitaxially grew on the YSZ, forming the matrix, where part of small irregular WO3 grains were embedded in. Other large-sized sub-stoichiometric WO3-δ (0<δ<3) grains with stacking faults lay on the film surface, which may contribute to the compressed strain of BiVO4 matrix vertically. Compared to the typical vertical heteroepitaxial nanocomposite of WO3-BiVO4 film grown at 600 oC by pulsed laser deposition, in the annealed composite film, the vertical lattice mismatched strain at WO3/BiVO4 interface decreased and lead to the disappearance of metastable hexagonal WO3.
AB - A WO3-BiVO4 amorphous film grown on the (001) yttria-stabilized zirconia (YSZ) substrate was annealed at 600 oC in air. The microstructures evolution was investigated by X-ray diffraction, scanning electron microscopy and high-resolution transmission electron microscopy. After annealed, the amorphous composite film crystalized into monoclinic BiVO4 and orthorhombic WO3. BiVO4 epitaxially grew on the YSZ, forming the matrix, where part of small irregular WO3 grains were embedded in. Other large-sized sub-stoichiometric WO3-δ (0<δ<3) grains with stacking faults lay on the film surface, which may contribute to the compressed strain of BiVO4 matrix vertically. Compared to the typical vertical heteroepitaxial nanocomposite of WO3-BiVO4 film grown at 600 oC by pulsed laser deposition, in the annealed composite film, the vertical lattice mismatched strain at WO3/BiVO4 interface decreased and lead to the disappearance of metastable hexagonal WO3.
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U2 - 10.1088/1742-6596/2011/1/012102
DO - 10.1088/1742-6596/2011/1/012102
M3 - Conference article
AN - SCOPUS:85115052416
SN - 1742-6588
VL - 2011
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012102
T2 - 2021 5th International Conference on Green Composite Materials and Nanotechnology, GCMN 2021
Y2 - 23 July 2021 through 25 July 2021
ER -