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个人信息Personal Information
教授
博士生导师
硕士生导师
性别:女
毕业院校:中科院大连化学物理研究所
学位:博士
所在单位:环境学院
学科:环境科学与工程. 环境工程. 环境科学
办公地点:环境楼B511
电子邮箱:quzhenping@dlut.edu.cn
In situ ESR study of gold supported on NaY zeolite
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论文类型:期刊论文
发表时间:2009-09-01
发表刊物:ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
收录刊物:SCIE、EI、Scopus
卷号:4
期号:5,SI
页面范围:602-606
ISSN号:1932-2143
关键字:ESR; gold nanoparticle; Au(II) complex; NaY zeolite
摘要:Electron spin resonance (ESR) spectroscopy was used to study the anchoring of a Au complex and gold nanoparticles in NaY type zeolites. The complex of Au(II) with two nitrogen atoms of two ethylenediamine ligands [g(iso) = 2.053, A (Au) = 16.4 G, A (N) = 15.0 G.] in the supercage of the zeolite and conduction electron spin resonance (CESR) of gold particles with 1.56-nm diameter (g = 2.064) were observed. Their formation and stability were related with the gold concentration and the pre-treatment conditions. The small gold particles stabilized in the supercage of zeolite were formed in the samples with low gold concentration after oxygen pre-treatment. The confinement in the zeolite pores obviously prevents the Au(II) complex bound to two nitrogen ligands from undergoing disproportionation. (C) 2009 Curtin University of Technology and John Wiley & Sons, Ltd.