Synthesis, characterisation and stability of Cu2O nanoparticles produced via reverse micelles microemulsion

被引：33
作者：
Dodoo-Arhin, D. [1 ]
Leoni, M. [1 ]
Scardi, P. [1 ]
Garnier, E. [3 ]
Mittiga, A. [2 ]
机构：
[1] Univ Trent, Dept Mat Engn & Ind Technol, I-38100 Trento, Italy
[2] ENEA CR Casaccia, I-00123 Rome, Italy
[3] Univ Poitiers, Catalyse Chim Organ Lab, CNRS, UMR 6503, F-86022 Poitiers, France
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2010年 / 122卷 / 2-3期
关键词：
Powder diffraction; Chemical synthesis; Semiconductors; METAL COLLOIDS; NANOCRYSTALS; SHAPE; SIZE;
D O I：
10.1016/j.matchemphys.2010.03.053
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Cuprite (Cu2O) nanoparticles were synthesized at room temperature via reduction of CuCl2 center dot 2H(2)O by NaBH4 in water/n-heptane microemulsion stabilised by the non-ionic Brij30 surfactant. Whole Powder Pattern Modelling of the X-ray diffraction patterns shows the presence of a bimodal size distribution in the nanopowders, with a fraction of domains in the 10-40 nm range and a smaller one below 10 nm. Linear and planar defects are absent. A relationship between the average size of the larger particles and the quantity of water in the system was obtained. The stability of cuprite under visible light irradiation both during the synthesis and after the preparation was investigated, showing that a self-catalytic conversion of Cu2O into CuO takes place in water. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：602 / 608
页数：7
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