Deposition of Au Nanocrystals on TiO2 Crystallites

Measurement of Local Atomic Displacements Reveals Interaction of Au Nanocrystals with Rutile (TiO2) Surface Steps

Advances in atomic resolution electron imaging now promise a detailed understanding of nanostructures and their interfaces, as well as defects. A major challenge in nanostructure characterization is the study of 3D interfaces that deviate significantly from a flat, 2D, interface. Here, we report a significant progress in the study of 3D interfaces by examining local displacements of Au atoms ne...

PbSe Nanocrystals on Au–Fe3O4 Hybrid Nanoparticles

In situ growth of Au nanocrystals on graphene oxide sheets.

Au nanocrystals (AuNCs) with a size of 10-20 nm decorated on graphene oxide (GO) were fabricated successfully through a hydrothermal reduction and crystallization route without any extra reductants and capping agents. The hydrophobic areas of GO benefit the formation of nanocrystals (NCs) with {111} facets totally exposed; however, the hydrophilic areas are detrimental to the crystallization. T...

Anisotropic Growth of PbSe Nanocrystals on Au-Fe3O4 Hybrid Nanoparticles

Two of the most important research directions in the preparation of nanocrystals are the growth of non-spherical quantum-confined structures and nanocrystal heterostructures. Non-spherical structures provide a means of understanding the effect of dimensionality and structural anisotropy on quantum-confined optoelectronic behavior and also introduce new degrees of freedom in engineering nanocrys...

Synthesis of TiO2 nanoparticles on the Au(111) surface.

The growth of titanium oxide nanoparticles on reconstructed Au(111) was investigated by scanning tunneling microscopy and x-ray photoelectron spectroscopy. Ti was deposited by physical-vapor deposition at 300 K. Regular arrays of titanium nanoparticles form by preferential nucleation of Ti at the elbow sites of the herringbone reconstruction. The titanium oxide nanoclusters were synthesized by ...