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

JOURNAL OF ALLOYS AND COMPOUNDS

卷:777

Article

Mjejri, Issam¹  Mornet, Stephane¹  Gaudon, Manuel¹ 

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

关键词: Polyol synthesis;    Zinc-cobalt oxide;    Green pigment;    Core-shell;   

DOI  :  10.1016/j.jallcom.2018.10.333

来源: Elsevier

【 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.

【 授权许可】

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