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<p>Lead chrome yellow is the most widely used yellow pigment, but it contains heavy metals lead and chromium to easily darken under sunlight. To avoid negative impacts, here, Ce<sub>x</sub>Bi<sub>1-x</sub>VO<sub>4</sub> (<i>x</i> = 0, 0.05, 0.1, 0.15 and 0.2, respectively) pigments were prepared using liquid phase precipitation method from ammonium metavanadate (NH<sub>4</sub>VO<sub>3</sub>), bismuth nitrate pentahydrate (Bi(NO<sub>3</sub>)<sub>3</sub>·5H<sub>2</sub>O) and cerium nitrate hexahydrate (Ce(NO<sub>3</sub>)<sub>2</sub>·6H<sub>2</sub>O). Silica nanoparticles were used for strong weather resistance. The bright yellow Ce<sub>x</sub>Bi<sub>1-x</sub>VO<sub>4</sub>@SiO<sub>2</sub> core–shell structured composite pigments were prepared. All Ce<sub>x</sub>Bi<sub>1-x</sub>VO<sub>4</sub> samples are single phase without impurities. The bright yellow Ce<sub>0.15</sub>Bi<sub>0.85</sub>VO<sub>4</sub>@SiO<sub>2</sub> composite pigment exhibits yellowness (<i>b</i>* = 89.73) better than the response value of BiVO<sub>4</sub> pigment (<i>b</i>* = 82.72). The BiVO<sub>4</sub>@SiO<sub>2</sub> pigment shows the traits of <i>L</i>* = 86.06, <i>a</i>* =  − 0.81, b* = 82.54 and Δ<i>E</i> = 4.31. After 672 h of UV exposure, Ce<sub>0.15</sub>Bi<sub>0.85</sub>VO<sub>4</sub>@SiO<sub>2</sub> pigment exhibits the properties of <i>L</i>* = 84.99, <i>a</i>* =  − 4.6, <i>b</i>* = 87.61 and Δ<i>E</i> = 2.14. The composite exhibits high stability and ultraviolet (UV) resistance in acid, alkali and organic solvent. After Ce<sub>0.15</sub>Bi<sub>0.85</sub>VO<sub>4</sub>@SiO<sub>2</sub> pigment was soaked in 3.5 wt% NaCl solution for 268&#xa0;h, the substrate corrosion just occurred. This work provides an effective solution for preparing the advanced eco-friendly yellow pigments.</p>

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Synthesis and application of high-performance oil painting pigments

  • 期刊论文

  • 发表日期：

    2025年4月29日

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  • Yake Wang

摘要

Lead chrome yellow is the most widely used yellow pigment, but it contains heavy metals lead and chromium to easily darken under sunlight. To avoid negative impacts, here, CexBi1-xVO4 (x = 0, 0.05, 0.1, 0.15 and 0.2, respectively) pigments were prepared using liquid phase precipitation method from ammonium metavanadate (NH4VO3), bismuth nitrate pentahydrate (Bi(NO3)3·5H2O) and cerium nitrate hexahydrate (Ce(NO3)2·6H2O). Silica nanoparticles were used for strong weather resistance. The bright yellow CexBi1-xVO4@SiO2 core–shell structured composite pigments were prepared. All CexBi1-xVO4 samples are single phase without impurities. The bright yellow Ce0.15Bi0.85VO4@SiO2 composite pigment exhibits yellowness (b* = 89.73) better than the response value of BiVO4 pigment (b* = 82.72). The BiVO4@SiO2 pigment shows the traits of L* = 86.06, a* =  − 0.81, b* = 82.54 and ΔE = 4.31. After 672 h of UV exposure, Ce0.15Bi0.85VO4@SiO2 pigment exhibits the properties of L* = 84.99, a* =  − 4.6, b* = 87.61 and ΔE = 2.14. The composite exhibits high stability and ultraviolet (UV) resistance in acid, alkali and organic solvent. After Ce0.15Bi0.85VO4@SiO2 pigment was soaked in 3.5 wt% NaCl solution for 268 h, the substrate corrosion just occurred. This work provides an effective solution for preparing the advanced eco-friendly yellow pigments.