曲振平

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

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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.