有机无机双金属杂化粒子PS/Ag-SiO2-Au的制备
收稿日期: 2020-03-14
网络出版日期: 2020-09-27
基金资助
国家自然基金支持项目(51373047);国家自然基金支持项目(51973050);河北省自然科学基金项目(B2019202114)
Preparation of PS/Ag-SiO2-Au organic-inorganic bimetallic hybrid particles
Received date: 2020-03-14
Online published: 2020-09-27
有机无机杂化粒子PS/SiO2-Au通过有机粒子（聚苯乙烯二聚体,PsD）与无机粒子（SiO2-Au）反应得到,其中雪人形态的PsD粒子和SiO2-Au粒子分别通过种子乳液聚合和溶胶-凝胶方法制得。在PS/SiO2-Au基础上,负载Ag纳米粒子得到双金属杂化粒子PS/Ag-SiO2-Au。期间,分别考察了单体与种子的配比、氨水加入量等对有机和无机粒子形貌的影响;采用红外光谱（FT-IR）、扫描电镜（SEM）、能谱分析（EDS）、透射电镜（TEM）、激光粒度测试仪（DLS）对所得粒子的结构、形貌、成分、尺寸进行了表征。PS/Ag-SiO2-Au杂化粒子在催化领域有潜在的应用。
梅述钘 , 庞栓林 , 潘明旺 , 谢智勇 , 李治水 . 有机无机双金属杂化粒子PS/Ag-SiO2-Au的制备[J]. 无机盐工业, 2020 , 52(9) : 26 -31 . DOI: 10.11962/1006-4990.2019-0523
PS/SiO2-Au organic-inorganic hybrid particles were obtained by reacting organic polystyrene dimer（PsD） with inorganic SiO2-Au particles.The snowman-shape of PsD particles and SiO2-Au particles were obtained via seed emulsion polymerization and sol-gel method,respectively.On the basis of PS/SiO2-Au particles,nano-sized Ag particles were supported on it to obtain bimetallic hybrid particles PS/Ag-SiO2-Au.During the period,effects of the ratios between monomers and polymer seeds,the adding amount of ammonia on morphology of the organic and inorganic particles were discussed.Infrared（FT-IR）,scanning electron microscopy（SEM）,energy spectrum analysis（EDS）,transmission electron microscopy（TEM）and laser particle size tester（DLS） were used to characterize the structure,morphology,composition and size of the obtained particles.The prepared PS/Ag-SiO2-Au hybrid particles will have potential applications in the field of catalysis.
Key words： polystyrene dimers; silica; hybrid particles
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