From nano-structured polycrystalline spheres with Zn1-xCoxO composition to core-shell Zn1-xCoxO@SiO2 as green pigments

被引：12

作者：

Mjejri, Issam ^{[1
]}

Mornet, Stephane ^{[1
]}

Gaudon, Manuel ^{[1
]}

机构：

[1] Univ Bordeaux, CNRS, ICMCB, 87 Ave Dr Albert Schweitzer, F-33608 Pessac, France

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 777卷

关键词：

Polyol synthesis; Zinc-cobalt oxide; Green pigment; Core-shell; DOPED ZNO; MAGNETIC-PROPERTIES; COBALT; OXIDE;

D O I：

10.1016/j.jallcom.2018.10.333

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：

ZnO doped with Co2+, a well-known green pigment which is an alternative to the chromium based inorganic pigments, has been prepared by a polyol process and investigated in terms of crystallographic structure and UV-visible properties. Thanks to the obtaining of nanometric crystallite size from our process, the incorporation of a very high concentration of Co2+ in the ZnO matrix is achieved. Thus, different grades of more or less deep green pigments can be produced. Furthermore, the obtaining of spherical aggregates allows the easy preparation of ZnO:Co@SiO2 core-shells, minimizing hence the problems linked to the zinc oxide high solubility into slightly acidic conditions acidic conditions and the metal cation's toxicity. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：1204 / 1210

页数：7

共 21 条

[1] Synthesis, structural, morphological, optical and magnetic properties of Zn1-xCoxO (0 ≤ x ≤ 0.36) nanoparticles synthesized by sol-gel auto combustion method [J].