Pr-ZrSiO_4颜料(镨锆黄)的两步法合成与表征  

Synthesis and Characterization of Pr-ZrSiO_4 Pigment by a Two-step Method

作　　者：曹坤武[1,2] 郭旭虹[2] 高彦峰[1] 罗宏杰[1] 

机构地区：[1]中国科学院上海硅酸盐研究所,上海200050 [2]华东理工大学化学工程联合国家重点实验室,上海200237

出　　处：《无机材料学报》2012年第9期984-990,共7页Journal of Inorganic Materials

基　　金：国家自然科学基金(51172265);上海市纳米专项基金(1052nm02100)~~

摘　　要：以ZrOCl2.8H2O、Na2SiO3.9H2O及Pr6O11为原料,采用水热合成加高温热处理两步法制备得到纳米级镨锆黄颜料.用XRD、TEM、SEM、反射光谱、L*a*b*参数等测试方法表征了样品晶体结构、形貌、颜色以及反射光谱参数.研究结果表明:水热体系溶液的pH值、水热温度、热处理温度是影响产物晶体结构及颜料性能的主要因素.综合考虑颜料的晶型、光谱差值、粒径大小、均匀性以及分散性,当反应条件为水热温度220℃,水热体系溶液的pH值为3.5,热处理温度为900℃条件下所得样品的颜料性能较佳.Nanoscale praseodymium-doped zircon yellowish pigment was prepared by a two-step new method using ZrOCl2·8H2O, Na2SiO3·9H20 and Pr6O11 as raw materials. Intermediate nanopowders were hydrothermally synthesized firstly, then these intermediate powders were calcined at high temperatures to produce nanoscale Pr-zircon yellowish pigment. The products were characterized by XRD, TEM, SEM, reflectance spectra and the CIE L＊a＊b＊ parameters. The pH of hydrothermal solution, the hydrothermal temperature and the heat treatment temperature are main factors that influenced the quality of pigment. Low pH is favorable for decreasing the calcination temperatures and producing the pigment with good dispersion and homogeneous sizes. The product with best pigment performance is obtained at the reaction conditions as follows, pH=3.5 of hydrothermal solution, hydrothermal temperature of 220℃ and heat treatment temperature of 900℃.

关 键 词：硅酸锆 镨锆黄 纳米颜料 水热 热处理 

分 类 号：TQ174[化学工程—陶瓷工业]