scholarly journals Ligand-mediated formation of Cu/metal oxide hybrid nanocrystals with tunable number of interfaces

2020 ◽  
Vol 11 (48) ◽  
pp. 13094-13101
Author(s):  
Seyedeh Behnaz Varandili ◽  
Dragos Stoian ◽  
Jan Vavra ◽  
James Pankhurst ◽  
Raffaella Buonsanti
Keyword(s):  
Metal Oxide ◽  
Organic Ligands ◽  
Final Configuration ◽  
Hybrid Nanocrystals

We report on the formation of Cu/metal oxide hybrid nanocrystals with a tunable number of interfaces between the two domains. We demonstrate that the organic ligands employed during the synthesis play a key role in regulating the final configuration.

scholarly journals Towards potential nanoparticle contrast agents: Synthesis of new functionalized PEG bisphosphonates

2016 ◽  
Vol 12 ◽  
pp. 1366-1371 ◽  
Author(s):  
Souad Kachbi-Khelfallah ◽  
Maelle Monteil ◽  
Margery Cortes-Clerget ◽  
Evelyne Migianu-Griffoni ◽  
Jean-Luc Pirat ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Contrast Agents ◽  
Hybrid Materials ◽  
Biomedical Applications ◽  
Metal Oxide Nanoparticles ◽  
Organic Ligands ◽  
Oxide Nanoparticles ◽  
Nanoparticle Surface ◽  
One Step ◽  
Phosphonate Ligands

The use of nanotechnologies for biomedical applications took a real development during these last years. To allow an effective targeting for biomedical imaging applications, the adsorption of plasmatic proteins on the surface of nanoparticles must be prevented to reduce the hepatic capture and increase the plasmatic time life. In biologic media, metal oxide nanoparticles are not stable and must be coated by biocompatible organic ligands. The use of phosphonate ligands to modify the nanoparticle surface drew a lot of attention in the last years for the design of highly functional hybrid materials. Here, we report a methodology to synthesize bisphosphonates having functionalized PEG side chains with different lengths. The key step is a procedure developed in our laboratory to introduce the bisphosphonate from acyl chloride and tris(trimethylsilyl)phosphite in one step.

Existence of Cubic ZrO2 at 300°C on Bulk Zirconium

1969 ◽  
Vol 27 ◽  
pp. 166-167
Author(s):  
R.A. Ploc
Keyword(s):  
Metal Oxide ◽  
Metal Substrate ◽  
Preferred Orientation ◽  
Monoclinic Zirconia ◽  
Epitaxial Relationship

The manner in which ZrO2 forms on zirconium at 300°C in air has been discussed in the first reference. In short, monoclinic zirconia nucleates and grows with a preferred orientation relative to the metal substrate. The mode of growth is not well understood since an epitaxial relationship which gives minimum misfit between the zirconium ions in the metal/oxide combination is not realized. The reason may be associated with a thin cubic or tetragonal layer of ZrO2 between the inner oxygen saturated metal and the outer monoclinic zirconia.

Recent advancement in the electrocatalytic synthesis of ammonia

Nanoscale ◽  
2020 ◽  
Vol 12 (15) ◽  
pp. 8065-8094 ◽  
Author(s):  
Xudong Wen ◽  
Jingqi Guan
Keyword(s):  
Metal Oxide ◽  
Oxide Catalysts ◽  
Single Atom ◽  
Metal Oxide Catalysts ◽  
Metal Free ◽  
Recent Advancement ◽  
Nanocomposite Catalysts

Different kinds of electrocatalysts used in NRR electrocatalysis (including single atom catalysts, metal oxide catalysts, nanocomposite catalysts, and metal free catalysts) are introduced.

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