【摘要】 在不同条件下合成了ＺｎＳＭｎ水溶胶，ＺｎＳＭｎ微粒的尺寸与溶液ｐＨ、Ｓ２－浓度等有关．ｐＨ＞７时所得样品因氧化致使其颜色随ｐＨ的增加而由白色向棕色变化．Ｍｎ２＋离子的特征发射强度亦受合成条件影响．掺杂浓度为４％时，可获得最大的发射强度．样品在酸性及碱性范围内均有最强发射峰，碱性条件下的最大发射强度约为酸性下的两倍．此外，过量的Ｓ２－可引起Ｍｎ２＋发射的猝灭．更多还原

【Abstract】 Abstract Manganesedoped zinc sulfide aqueous colloids were synthesized. The size of the particles is seriously affected by the pH of the solution, the concentration of S2-, etc. Suspension and its color change (from white to brown) can be observed when the pH>7, furthermore, the color will be deeper with the increasing of pH. The characteristic emission band of Mn2+ can be observed and its intensity is affected by the synthesis conditions. The maximum luminescence intensity reached at CMn2+/CZn2+=0.04. The acidity of solution also has effect on the luminescence intensity, and the　maximum luminescence intensity were located at pH=4.0 and pH=10.0. After aging the samples for 100 hours, the intensity of the sample prepared at pH=10.0 is twice of that of pH=4.0. Excess S2-  will quench the emission.更多还原