摘要
以CuCl2.2H2O和NaOH为原料,离子液体1-丁基-3-甲基咪唑四氟硼酸盐[BMIM]BF4-水混合溶剂为介质,利用化学还原法在112℃反应12 h合成了Cu2O粒子,考察了[BMIM]BF4对产物的影响。用XRD、ESEM/EDS和TEM/SAED对Cu2O粒子进行了结构和形貌表征;用FTIR和TG/DSC证实了离子液体修饰在Cu2O粒子的表面,从而有效地阻止了Cu2O粒子的氧化和团聚;用紫外-可见吸收光谱估测了Cu2O粒子的带隙能量为2.38 eV。离子液体在反应中发挥了还原剂、稳定剂、分散剂和模板剂的多重作用。
Cu2O particles were synthesized at constant temperature of 112 ℃for 12 h using CuCl2-2H2O and NaOH as raw materials in the mixed solvent of ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate [ BMIM ] BF4 - H2O via chemical reduction. XRD, ESEM/EDS and TEM/SAED were used to characterize the structure and morphology of the product. FTIR spectra and TG/DSC curves indicated that the surface of Cu2O particles was modified with the ionic liquid to prevent them from oxidation and crystallite aggregation. UV -vis spectra were employed to estimate the band gap energy of Cu2O to be about 2. 38 eV. It was demonstrated that the ionic liquid acted as reducing, stabilizing, dispersing as well as structure-directing agent.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2007年第9期852-855,884,共5页
Fine Chemicals
基金
教育部博士学科点专项基金(No.20050217019)
哈尔滨工程大学基础研究基金(No.HEUFT05018)
关键词
离子液体
Cu2O粒子
还原剂
功能材料
ionic liquids
Cu2O particles
reducing agent
functional materials
