| 共沉淀法制备参数对(Y，Gd)2O3∶Eu3+纳米粉体性能的影响 | |
| Effect of Process Parameter on Properties of (Y,Gd)2O3∶Eu3+ Nanopowders Prepared by Co-Precipitation Method | |
| 摘要: 采用氨水为沉淀剂，正向滴定共沉淀法制备(Y，Gd)2O3∶Eu3+纳米粉体。用XRD、SEM和荧光光度计对粉体的形貌和特性进行了分析。结果表明：稀土溶液的起始浓度0.15 mol·L-1，体系温度0 ℃，滴定速度2 mL·min-1，静止12 h，添加3% (NH4)2SO4(质量分数)并且在800 ℃煅烧2 h的条件下,合成出(Y，Gd)2O3∶Eu3+纳米粉体近似球形，粒径尺寸约为30~60 nm且分散性良好。添加3% (NH4)2SO4的含量能够改善(Y，Gd)2O3∶Eu3+纳米粉体的发光性能，并使发射光谱在5D0→7F2跃迁态上获得最大的相对发光峰值。 | |
| 关键词: 共沉淀法 制备参数 合成与表征 光谱特性 | |
| 基金项目: | |
| Abstract: (Y,Gd)2O3∶Eu3+ nano-powders were prepared by forward-titration co-precipitation method and using ammonia as the precipitator. XRD, SEM and the fluorophotometer were used to analyze the morphology and characteristics of the powders. The results show that the near-spherical nano-powders with good dispersibility and fine particle size (30~60 nm) were obtained under the conditions of initial concentration of resolution, 0.15 mol·L-1, system temperature, 0 ℃, titration rate, 2 mL·min-1, stationary, 12 h and adding 3% (NH4)2SO4 (mass fraction). When adding 3% (NH4)2SO4, the nano-powders′ Luminescent has improved and the emission intensity of 5D0→7F2 transition reaches the maximum. | |
| Keywords: co-precipitation method process parameter synthesis and characterzation optical spectrum characteristic | |
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| 郭易芬,马伟民,闻 雷,沈世妃,王华栋,尹 凯.共沉淀法制备参数对(Y，Gd)2O3∶Eu3+纳米粉体性能的影响[J].无机化学学报,2009,25(5):880-885. | |
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