将硝酸钇铕和较便宜的水溶性含硫燃烧剂溶于乙醇-水溶液,通过新的乙醇辅助燃烧法合成了一次粒径约20nm的硫氧化钇(Y2O2S∶Eu)发光材料.研究结果表明:采用硫代乙酰胺作为燃烧剂时,燃烧反应产物为Y2O2S∶Eu及微量的Y2O3∶Eu.而采用硫脲作为燃烧剂,燃烧反应产物为Y2O3∶Eu,Y2O2S∶Eu和/或Y2O2SO4 ∶Eu的混合物.利用Eu3+离子的5D0→7Fj跃迁导致的红色发光作为荧光探针,根据其在Y2O3(λem=610nm),Y2O2S(λem1=625nm,λem2=615nm),Y2O2SO4(λem1=613,λem2=615nm)基质中的光致发光光谱和X射线发光光谱位置和强度不同,来确定生成物中Y2O3∶Eu,Y2O2S∶Eu,Y2O2SO4 ∶Eu物相的组成.
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