聚乙二醇诱导下多种形貌钼氧化物的可控制备  

PEG-induced controllable synthesis of molybdenum oxides with various morphologies and polymorphs

作　　者：霍鑫涛 肖清贵[2] 张炳烛[1] 许永权[1] 徐红彬[2] 张懿[2] 

机构地区：[1]河北科技大学化学与制药工程学院,河北石家庄050018 [2]中国科学院过程工程研究所湿法冶金清洁生产技术国家工程实验室

出　　处：《无机盐工业》2014年第12期16-21,共6页Inorganic Chemicals Industry

基　　金：国家自然科学基金资助项目(21376251);国家高技术研究发展计划(863计划)资助项目(2011AA060702);国家重点基础研究计划(973计划)资助项目(2013CB632600)

摘　　要：以双氧水和钼粉为原料配制成钼前驱体溶液,然后在聚乙二醇(PEG)溶液体系中通过PEG的诱导作用合成了多种形貌的PEG-钼氧化物杂化材料,经煅烧制得不同形貌的钼氧化物粉体。重点考察了PEG聚合物浓度、PEG相对分子质量等对PEG-钼氧化物杂化材料形貌的影响,以及煅烧温度、煅烧气氛对钼氧化物形貌、结构的影响。采用SEM、XRD、FT-IR、EDS、DSC等对PEG-钼氧化物杂化材料和钼氧化物的形貌、结构、组成进行了分析表征。结果表明:在水溶液中PEG聚合物对钼氧化物晶体的结构和形貌具有显著的影响和诱导作用,反应体系合成条件的变化将导致钼氧化物由六棱柱到纳米线、球形、立方形的转变。PEG-molybdenum hybrid materials with various morphologies and polymorphs were synthesized by hydrolyzing of molybdenum precursor obtained from hydrogen peroxide and molybdenum powder as raw materials in the presence of polyethylene glycol （PEG） solutions, and molybdenum oxides with various morphologies and polymorphs were prepared by calcination of PEG-molybdenum.The influences of factors, such as PEG concentration and relative molecular mass on the morphologies of PEG-molybdenum hybrid materials and the influences of the calcination temperature and calcination atmosphere on the morphologies and structure of molybdenum oxides were investigated in detail.The morphologies, structure, and composition of the as-prepared products were characterized with SEM, XRD, FF-IR, EDS, and DSC etc..The results showed that PEG polymer having a significant effect and induction on the structure and morphology of molybdenum oxide crystals, and the change of preparing conditions of reaction system,resulting in the transformation of hexagonal prism,nanowire, sphere, and cube of molybdenum oxides.

关 键 词：可控制备 聚乙二醇 钼氧化物 杂化材料 

分 类 号：TQ136.12[化学工程—无机化工]