One-Step Synthesis and Self-Assembly of Metal Oxide Nanoparticles into 3D Superlattices

被引:44
作者
Pucci, Andrea [1 ]
Willinger, Marc-Georg [1 ,2 ]
Liu, Feng [3 ]
Zeng, Xiangbing [3 ]
Rebuttini, Valentina [1 ]
Clavel, Guylhaine [1 ]
Bai, Xue [1 ]
Ungar, Goran [3 ,4 ]
Pinna, Nicola [1 ,4 ]
机构
[1] Univ Aveiro, CICECO, Dept Chem, P-3810193 Aveiro, Portugal
[2] Max Planck Gesell, Fritz Haber Inst, Dept Inorgan Chem, Berlin, Germany
[3] Univ Sheffield, Dept Mat Sci & Engn, Sheffield S1 3JD, S Yorkshire, England
[4] Seoul Natl Univ, WCU Program Chem Convergence Energy & Environm C2, Coll Engn, Sch Chem & Biol Engn, Seoul 151744, South Korea
基金
新加坡国家研究基金会; 英国工程与自然科学研究理事会;
关键词
zirconium oxide; nanoparticles; supercrystals; mesocrystals; assembly; electron microscopy; LAMELLAR NANOHYBRIDS; SCALE SYNTHESIS; NANOCRYSTALS; ORGANIZATION;
D O I
10.1021/nn3010735
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A simple one-pot approach based on the "benzyl alcohol route" is introduced for the fabrication of highly ordered supercrystals composed of highly uniform 3-4 nm zirconia and rare-earth stabilized zirconia nanoparticles. The as-fabricated supercrystals reach sizes larger than 10 mu m and present well-defined 3D morphologies such as flower-like, rhombic dodecahedron, and bipyramids. This system is unique In that the supercrystals are formed in one-step directly in the reaction medium where the nanoparticles are synthesized. The uniformity in nanocrystal shape and size is attributed to the in situ formation of benzoate species that directs the nanoparticle growth and assembly. The low colloidal stabilization of the benzoate-capped nanoparticles in benzyl alcohol promotes the formation of supercrystals in solution by pi-pi interaction between the in situ formed benzoate ligands attached to neighboring particles. By varying the reaction temperature and the nature of the doping the way the nanobulding blocks assemble in the supercrystals could be controlled. Standard FCC superlattice packings were found together with more unusual ones with P6/mmm and R (3) over barm symmetries.
引用
收藏
页码:4382 / 4391
页数:10
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