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一前言萤光纯硫化镉是黑白电视黄色萤光粉、彩色电视绿色萤光粉及一些阴极射线萤光粉的基质材料之一。这种硫化镉,一般是采用净化了的硫化氢气体通入经过提纯的硫酸镉(或氯化镉)溶液中而制得。用这种方法制备硫化镉,往往只能得到极微细的沉淀,过滤洗涤非常困难,而且干燥后易结块,用起来也很不方便。为了克服上述缺点,目前,国内大都是先将镉盐溶液稀释到0.25～0.35克分子/升,并加热使反应液温度保持在75℃～85℃,再通硫化
Preface Fluorescence Pure cadmium sulfide is one of the host materials for black-and-white television yellow phosphors, color television green phosphors, and some cathode ray phosphors. This cadmium sulfide, usually purified hydrogen sulfide gas through the purified cadmium sulfate (or cadmium chloride) solution obtained. In this method of preparation of cadmium sulfide, often only get very fine precipitation, filtration and washing is very difficult, and easy to cake after drying, it is also very inconvenient to use. In order to overcome the above shortcomings, at present, most of the domestic cadmium salt solution is diluted to 0.25-0.35 mol / l and heated to keep the temperature of the reaction solution at 75-85 ° C,