A monolayer dispersion study of titania-supported copper oxide

被引：56

作者：

Yu, XF ^{[1
]}

Wu, NZ ^{[1
]}

Xie, YC ^{[1
]}

Tang, YQ ^{[1
]}

机构：

[1] Peking Univ, Inst Phys Chem, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100871, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2000年 / 10卷 / 07期

关键词：

D O I：

10.1039/a909893c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A monolayer dispersion of copper oxide on the surface of anatase and its effect on the anatase properties have been studied by BET surface area measurements, transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction (TPR), and X-ray diffraction (XRD). XPS results give a monolayer dispersion threshold of 5.1 mg CuO (g TiO2)(-1). Strong interactions between CuO and anatase can be seen from the TPR results. When the loading of CuO is below its monolayer dispersion threshold, the onset temperature of the anatase-rutile transformation and the transition speed strongly depend on the dispersion of CuO. Crystalline CuO appears when the CuO loading is higher than the monolayer dispersion threshold, but it has little effect on the phase transformation of the samples.

引用

页码：1629 / 1634

页数：6

共 22 条

[1] Spectroscopic and activity studies on vanadia supported on titania and phosphorus-modified titania [J].