Journal ArticleDOI
Solubility-Controlled Synthesis of High-Quality Co3O4 Nanocrystals
TLDR
In this paper, a liquid phase redox process was designed to prepare monodispersed Co3O4 nanocrystals with particle sizes of 2 nm (spherical), 2.5 nm (cubelike), and 4.7 nm (closest to ours).Abstract:
A liquid-phase redox process has been designed to prepare monodispersed Co3O4 nanocrystals with particle sizes of 2 nm (spherical), 2.5 nm (cubelike), and 4.7 nm (cubelike). The nanocrystals were characterized by transmission electron microscopy (TEM), high-resolution TEM, X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and thermogravimetric techniques. The nucleation and growth, which were tracked by UV−visible spectroscopy, can be separated by adjusting the solubility of sodium nitrate, and the smallest possible Co3O4 nanocubes, 2.5 nm on a side, were obtained. A solubility-controlled mechanism for the redox reaction is discussed which is critical in avoiding secondary nucleation and interparticle ripening growth of Co3O4 nanocrystals.read more
Citations
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Advances in the development of novel cobalt Fischer-Tropsch catalysts for synthesis of long-chain hydrocarbons and clean fuels.
Journal ArticleDOI
Selective Synthesis of Co3O4 Nanocrystal with Different Shape and Crystal Plane Effect on Catalytic Property for Methane Combustion
Linhua Hu,Qing Peng,Yadong Li +2 more
TL;DR: The selective synthesis of transition metal oxides with uniform and different reactive crystal planes under nanoscale conditions is expected to bring up new opportunities for design, tuning, and control of chemical activity, specificity, and selectivity.
Journal ArticleDOI
MOF-Templated Synthesis of Porous Co3O4 Concave Nanocubes with High Specific Surface Area and Their Gas Sensing Properties
Yinyun Lü,Wenwen Zhan,Yue He,Yiting Wang,Xiang-Jian Kong,Qin Kuang,Zhaoxiong Xie,Lan-Sun Zheng +7 more
TL;DR: Experimental results reveal that the porous Co3O4 concave nanocubes present the highest sensitivity to ethanol with fast response/recovery time (< 10 s) and a low detection limit (at least 10 ppm).
Journal ArticleDOI
Organic reaction pathways in the nonaqueous synthesis of metal oxide nanoparticles.
TL;DR: General mechanistic principles for aqueous and nonaqueous sol-gel processes are presented, followed by the discussion of reaction pathways relevant for nanoparticle formation in organic solvents.
Journal ArticleDOI
Cobalt particle size effects in Fischer–Tropsch synthesis: structural and in situ spectroscopic characterisation on reverse micelle-synthesised Co/ITQ-2 model catalysts
TL;DR: In this article, a series of 10%Co/ITQ-2 model catalysts have been prepared by combining a reverse micellar synthesis with a surface silylated ITQ 2 delaminated zeolite.
References
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Journal ArticleDOI
Shape-Controlled Synthesis of Gold and Silver Nanoparticles
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