Effect of SDBS addition on properties of bismuth vanadate yellow pigment powder
In this paper,sodium dodecylbenzene sulfonate(SDBS)was used as structure directing agent to prepare bismuth vanadate pigment nanopowder by liquid phase method.The influence of SDBS on the morphology,phase,and chromaticity value of bismuth vanadate was investigated.The results show that SDBS can promote the growth of bismuth vanadate 121 crystal plane during the preparation of bis-muth vanadate.At the same time,it effectively reduces the particle size of bismuth vanadate,improves the dispersion stability of bismuth vanadate particles and achieves the regulation of the color tone of bis-muth vanadate.When the amount of SDBS added is 1.0,the prepared bismuth vanadate has a monoclin-ic scheelite structure.The particles show no obvious agglomeration,with an average size of 115.21 nm and a concentrated distribution,with 89％ of the particles ranging in the size from 50 to 150 nm.The transformation of bismuth vanadate from red to yellow to green was achieved,while the brightness L of bismuth vanadate was improved,with a chromaticity value of L*=89.10,a*=-2.54 and b*=71.82.
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