Metal-Particle-Decorated ZnO Nanocrystals: Photocatalysis and Charge Dynamics

2016 ◽  
Vol 8 (48) ◽  
pp. 32754-32763 ◽  
Author(s):  
Wei-Hao Lin ◽  
Yi-Hsuan Chiu ◽  
Pao-Wen Shao ◽  
Yung-Jung Hsu
Keyword(s):  
Metal Particle ◽  
Charge Dynamics ◽  
Zno Nanocrystals

Plasmons in Photocharged ZnO Nanocrystals Revealing the Nature of Charge Dynamics

2013 ◽  
Vol 4 (18) ◽  
pp. 3024-3030 ◽  
Author(s):  
Jacob A. Faucheaux ◽  
Prashant K. Jain
Keyword(s):  
Charge Dynamics ◽  
Zno Nanocrystals

Plasmon-mediated charge dynamics and photoactivity enhancement for Au-decorated ZnO nanocrystals

2018 ◽  
Vol 6 (10) ◽  
pp. 4286-4296 ◽  
Author(s):  
Yi-Hsuan Chiu ◽  
Kao-Der Chang ◽  
Yung-Jung Hsu
Keyword(s):  
Charge Transfer ◽  
Electromagnetic Response ◽  
Charge Dynamics ◽  
Zno Nanocrystals

Correlations among Au content, SPR-mediated charge transfer and electromagnetic response, and the resultant photoactivity enhancement for ZnO–Au nanocrystals were established.

Probing charge dynamics in bare and dye-sensitized ZnO nanocrystals with time-resolved XPS

2016 ◽  
Author(s):  
Stefan Neppl ◽  
Johannes Mahl ◽  
Andrey Shavorskiy ◽  
Hendrik Bluhm ◽  
Oliver Gessner
Keyword(s):  
Time Resolved ◽  
Charge Dynamics ◽  
Dye Sensitized ◽  
Zno Nanocrystals

Electron Microscopy of the Shape of Small Metal Particles

1977 ◽  
Vol 35 ◽  
pp. 300-301
Author(s):  
M. Jose Yacaman
Keyword(s):  
Electron Microscopy ◽  
Metal Particle ◽  
Field Experiments ◽  
Size Range ◽  
Dark Field ◽  
Metal Particles ◽  
Bragg Condition ◽  
Crystal Particle ◽  
Small Metal Particle ◽  
Small Metal Particles

In the Study of small metal particles the shape is a very Important parameter. Using electron microscopy Ino and Owaga(l) have studied the shape of twinned particles of gold. In that work electron diffraction and contrast (dark field) experiments were used to produce models of a crystal particle. In this work we report a method which can give direct information about the shape of an small metal particle in the amstrong- size range with high resolution. The diffraction pattern of a sample containing small metal particles contains in general several systematic and non- systematic reflections and a two-beam condition can not be used in practice. However a N-beam condition produces a reduced extinction distance. On the other hand if a beam is out of the bragg condition the effective extinction distance is even more reduced.

How Charge Dynamics Change in Mixed Halide Perovskites on Light Soaking

2017 ◽  
Author(s):  
Dengyang Guo ◽  
Zahra Garmaroudi ◽  
Samuel Stranks ◽  
Tom Savenije
Keyword(s):  
Charge Dynamics ◽  
Halide Perovskites

scholarly journals Evolution of charge dynamics in FeSe1−xTex : Effects of electronic correlations and nematicity

2021 ◽  
Vol 104 (2) ◽  
Author(s):  
M. Nakajima ◽  
K. Yanase ◽  
M. Kawai ◽  
D. Asami ◽  
T. Ishikawa ◽  
...  
Keyword(s):  
Electronic Correlations ◽  
Charge Dynamics

scholarly journals Superhydrophobic Sands for the Preservation and Purification of Water

Coatings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 151
Author(s):  
Yuyang Liu ◽  
Chang-Hwan Choi
Keyword(s):  
Water Surface ◽  
Particulate Material ◽  
Self Assembled Monolayer ◽  
Hydrophobic Coatings ◽  
Hydrophobic Coating ◽  
Evaporation Loss ◽  
Zno Nanocrystals ◽  
Sand Particles ◽  
Purification Of Water ◽  
Nanoscale Roughness

Sand, a cheap and naturally abundant particulate material, was modified with photocatalytic and hydrophobic coatings to reduce evaporation loss and facilitate the purification of water. The first-level photocatalytic coatings (TiO2 or ZnO nanocrystals) rendered nanoscale roughness on the surface of the sand. The additional second-level hydrophobic coating of a self-assembled monolayer of octyltrimethoxysilane (OTS) made the sand particles superhydrophobic because of the nanoscale roughness imposed by the nanocrystals. The superhydrophobic sand particles, floating on the free surface of water due to their superhydrophobicity, significantly reduced the evaporation loss of water by 60%–90% in comparison to an uncovered water surface. When the outer hydrophobic coatings are weathered or disengaged, the inner photocatalytic coatings become exposed to water. Then, the sand particles act as photocatalysts to degrade the contaminants in water under solar radiation.

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