聚丙烯酸钠或聚甲基丙烯酸调控下合成特殊形貌的PbWO4晶体  

Synthesis of Specific Morphologies PbWO4 Crystals by PAANa or PMAA Reagent

作　　者：任蕾[1] 杨晓娇[2] 王霞[2] 任引哲[2] 

机构地区：[1]山西中医学院中药系,山西太原030024 [2]山西师范大学化学与材料科学学院,山西临汾041004

出　　处：《纳米科技》2013年第1期33-39,共7页

摘　　要：以聚丙烯酸钠（PAANa）或聚甲基丙烯酸（PMAA）为模板，Na2WO4为沉淀剂，在Pb（NO3）2溶液中合成具有特殊形貌的PbWO4晶体。PAANa、PMAA或PbWO4的浓度改变时，PbWO4晶体的形貌都将发生较大的变化。PbW04的浓度为0．0500mol／L时，PbWO4晶体为宝塔形；PAANa浓度增大后，PbWO4晶体变为枣核形；PMAA取代PAANa后，PbWO4晶体可变为有四条楞的枣核状晶体，但PbWO4晶体的晶型都没有改变。PbWO4 crystals are prepared by using Polyacrylic acid Sodium salt （PAANa） and Poly （methacrylic aeid）（PMAA） as templates and Pb（NO3）2 as an reaction reagent. When the Polyacrylic acid Sodium sah（PAANa） or Poly（methacrylic acid）（PMAA）was absent, the morphologies of as-prepared Pb- W04 crystals have largely changed with different concentrates, when initial concentrate higher than 0.0500mol/L, the products were transformed into hierachical pagoda-like morphology. With introducing PMAA during the preparation process, the results were jujube core-like, jujube-core-like along with four flute morphology PbW04 crystals were obtained with the PMAA instead of PAANa. The PbW04 crystals can be transformed but not the crystal phase.

关 键 词：钨酸铅 聚丙烯酸钠 聚甲基丙烯酸 形貌调控 

分 类 号：O78[理学—晶体学]