期刊
DYES AND PIGMENTS
卷 149, 期 -, 页码 373-376出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2017.09.071
关键词
BiVO4; Thermochromic; Co-doping; Structure deformation; Optical band gap energy; Color
资金
- Technology Innovation Program - Ministry of Trade, Industry & Energy (MOTIE, Korea) [N0002310]
Pure BiVO4, B-doped BiVO4, Mg-doped BiVO4, and B-Mg co-doped BiVO4 were prepared using a mixed aqueous solution of bismuth nitrate (Bi(NO3)(3)) and ammonium vanadate (NH4VO3) using a hydrothermal method. The crystal structure and thermochromic behaviors of BiVO4 samples were investigated using X-ray diffraction, UVVis spectrophotometry, and in situ X-ray diffraction to compare the effects of the doping elements on the thermochromicbehaviors of BiVO4. The results showed that B and Mg ions co-doped into the lattice of BiVO4 led to lattice deformation, higher impurity levels, more new band gap states, a narrower band gap, and an improvement in thermochromic behaviors than either ion alone. The thermochromic behavior of B4%-Mg-4% co doped BiVO4 was remarkably improved in comparison with the others owing to the synergistic effects of the co doped ions.
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