过氧化银粉体的合成与表征  

The Synthesis and Characterization of Silver Dioxide Powders

作　　者：冯秀丽[1] 李必进[1] 原勇强[1] 

机构地区：[1]中国工程物理研究院电子工程研究所,四川绵阳621900

出　　处：《中国材料科技与设备》2014年第5期1-3,共3页Chinese Materials Science Technology & Equipment

基　　金：中国工程物理研究院院基金资助项目（201280302045）

摘　　要：在反应原料硝酸银、氢氧化钾和过硫酸钾的摩尔比为1．00：2．52：0．55及反应温度为85℃条件下，采用沉淀一氧化还原两步法合成出纯度不低于95％的过氧化银粉体。经XRD、XPS、IR、SEM等分析表明产物中除过氧化银外，还残留着少量未被清洗干净的S、N和K元素；过氧化银中银的价态为正二价，属于单斜晶系、具有片状形貌，实密度为1．685g／mL。Silver dioxide powders was synthesized from the reactants of silver nitrate, potassium hydroxide and potassium persulfate through two steps of precipitation and redox reaction. When the reaction is carried out at temperature of 85℃, the moral ratio of AgNO3：KOH：K2S2O4 =1.00： 2.52： 0. 55, the purity of AgO is not less than 95%, crystal structure of AgO is monoclinic, morphology of AgO is sheet, tap density of AgO is 1. 685g/mL, oxidative state of Ag is ＋2 and the prod- ucts contain a small quantity of S , K and N elements.

关 键 词：过氧化银 沉淀一氧化还原法 二步法 

分 类 号：TG146.3[一般工业技术—材料科学与工程]