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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 大连理工大学成都研究院院长
性别：男
毕业院校：中科院大连化学物理研究所
学位：博士
所在单位：化工学院
学科：化学工艺. 物理化学. 功能材料化学与化工
办公地点：大连理工大学西部校区化工综合楼A401室
联系方式：辽宁省大连市高新区凌工路2号，邮编116024
电子邮箱：changhai@dlut.edu.cn
Preparation and Formation Mechanism of Highly Dispersed Manganese Silicide on Silica by MOCVD of Mn(CO)(5)SiCl3
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论文类型：期刊论文
发表时间：2013-03-01
发表刊物：CHEMICAL VAPOR DEPOSITION
收录刊物：SCIE、EI、Scopus
卷号：19
期号：1-3
页面范围：68-73
ISSN号：0948-1907
关键字：Formation mechanism; In-situ FTIR; Manganese silicide; Mn(CO)(5)SiCl3; MOCVD
摘要：MnSi nanoparticles on silica are prepared by metal-organic (MO)CVD of Mn(CO)5SiCl3 as a single-source precursor. Mn(CO)5SiCl3 is synthesized from Mn2(CO)10 and SiHCl3 using standard Schlenk techniques, and confirmed by Fourier transform infrared (FTIR), single-crystal X-ray diffraction (XRD), and 13C and 29Si nuclear magnetic resonance (NMR). Powder XRD patterns, high resolution transmission electron microscopy (HRTEM), elemental maps, and energy dispersive X-ray (EDX) spectroscopy show that MnSi particles, with a size of about 56nm, are uniformly dispersed on the silica support. The formation mechanism of MnSi nanoparticles on silica is investigated by in-situ FTIR spectroscopy. The results demonstrate the formation details of MnSi nanoparticles from Mn(CO)5SiCl3 through the elimination of carbonyl groups and dissociation of SiCl bonds with the promotion of H2.