Quantum size effects in CuO nanoparticles

被引：260

作者：

Borgohain, K ^{[1
]}

Singh, JB

Rao, MVR

Shripathi, T

Mahamuni, S

机构：

[1] Univ Poona, Dept Phys, Poona 411007, Maharashtra, India

[2] Bhabha Atom Res Ctr, Div Mat Sci, Bombay 400085, Maharashtra, India

[3] Inter Univ Consortium, Indore 452017, India

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.61.11093

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Size effects in cupric oxide nanocrystals, synthesized using a novel electrochemical route, having average diameters of about 4 and 6 nm, are probed by x-ray photoelectron spectroscopy. Cu-O bond ionicity was found to increase with reduction in nanocrystallite size. Formation of pure CuO phase was confirmed from x-ray diffraction, infrared spectrophotometry and photoelectron spectroscopy. This report also disproves the earlier conjecture that nanometer sized CuO phase is unstable below 25 nm.

引用

页码：11093 / 11096

页数：4

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