scholarly journals Permanent photodoping of plasmonic gallium-ZnO nanocrystals

Nanoscale ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 6624-6629
Author(s):  
Anzelms Zukuls ◽  
Raivis Eglītis ◽  
Tanel Käämbre ◽  
Reinis Ignatans ◽  
Krišjānis Šmits ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Compensation Mechanism ◽  
Zno Nanocrystals ◽  
Donor Dopant

The concentration of delocalized electrons in plasmonic metal oxide nanocrystals can be increased permanently by photodoping because the electron compensation becoming the dominant compensation mechanism for the aliovalent donor dopant.

Preparation and Characterization of CuO/ZnO/PVDF/PAN Nanofiber Composites by Bubble-electrospinning

2020 ◽  
Vol 13 (3) ◽  
pp. 196-201 ◽  
Author(s):  
Fang Wei ◽  
Liu Ling ◽  
Xu Lan
Keyword(s):  
Crystal Structure ◽  
Heat Treatment ◽  
Metal Oxide ◽  
Hydrothermal Method ◽  
Mass Production ◽  
Heat Treatment Temperature ◽  
Treatment Temperature ◽  
Zno Nanocrystals ◽  
Cuo Nanocrystals ◽  
Nanofiber Membranes

Background: Nanocomposites loaded with metal oxides, such as CuO and ZnO, have excellent optical, electrical, mechanical and chemical properties, which result in their great potential applications in optoelectronic devices, sensors, photocatalysts and other fields. Especially, electrospun metal- oxide-loaded nanofibers have attracted much attention in many fields. However, the single-needle Electrospinning (ES) inhibits the industrial application of these electrospun nanofiber composites. Bubble-Electrospinning (BE) is an effective free surface ES for mass production of nanofiber membranes loaded with metal oxide. Few relevant patents to the topic have been reviewed and introduced. Methods: The BE was used to prepare mass production of Cu(Ac)2 /Zn(Ac)2/ PVDF/ PAN Composite Nanofiber Membranes (CNFMs). Then PVDF/PAN CNFMs containing CuO and ZnO nanocrystals were obtained by heat-treatment. Finally, CuO nanosheets and ZnO nanorods were successfully grown on the surface of PVDF/PAN CNFMs using hydrothermal method. In addition, the morphology and crystal structure of CNFMs were investigated by scanning electron microscopy (SEM) and X-Ray Powder Diffractometer (XRD). Results: The morphology and crystal structure of the samples were characterized by SEM and XRD. The results showed the heat treatment temperature of 150oC and the hydrothermal temperature of 150oC were the optimal process parameters for the fabrication of PVDF/PAN CNFMs loaded with CuO and ZnO nanocrystals, and a higher heat treatment temperature results in higher crystallinity of ZnO and CuO. Conclusion: CuO/ZnO/PVDF/PAN CNFMs were successfully prepared by a combination of BE, heattreatment and hydrothermal method. The ZnO/CuO beads obtained by heat treatment is the key point of growing ZnO/CuO nanocrystals, and the growth temperature has great effect on the morphology of ZnO/CuO nanocrystals.

Thermally Induced Growth of ZnO Nanocrystals on Mixed Metal Oxide Surfaces

2014 ◽  
Vol 20 (26) ◽  
pp. 8161-8169 ◽  
Author(s):  
Alexandra Inayat ◽  
Ayman Makky ◽  
Jose Giraldo ◽  
Andreas Kuhnt ◽  
Corinna Busse ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Oxide Surfaces ◽  
Mixed Metal Oxide ◽  
Thermally Induced ◽  
Metal Oxide Surfaces ◽  
Mixed Metal ◽  
Zno Nanocrystals

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.

Routes of metal oxide formation from metal β-diketonates used as CVD precursors

1999 ◽  
Vol 09 (PR8) ◽  
pp. Pr8-65-Pr8-72 ◽  
Author(s):  
A. E. Turgambaeva ◽  
V. V. Krisyuk ◽  
A. F. Bykov ◽  
I. K. Igumenov
Keyword(s):  
Metal Oxide ◽  
Oxide Formation

STRUCTURE OF METAL-OXIDE INTERFACES

1985 ◽  
Vol 46 (C4) ◽  
pp. C4-135-C4-140 ◽  
Author(s):  
M. Leseur ◽  
B. Pieraggi
Keyword(s):  
Metal Oxide ◽  
Oxide Interfaces ◽  
Structure Of Metal
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