Plasmon-Induced Charge Separation and Recombination Dynamics in Gold−TiO2 Nanoparticle Systems: Dependence on TiO2 Particle Size

2009 ◽  
Vol 113 (16) ◽  
pp. 6454-6462 ◽  
Author(s):  
Luchao Du ◽  
Akihiro Furube ◽  
Kazuhiro Yamamoto ◽  
Kohjiro Hara ◽  
Ryuzi Katoh ◽  
...  
Keyword(s):  
Particle Size ◽  
Charge Separation ◽  
Tio2 Particle ◽  
Tio2 Nanoparticle ◽  
Induced Charge ◽  
Recombination Dynamics

scholarly journals Ultrafast photo-induced charge separation and recombination dynamics at the colloid quantum rods/2D MoS<sub>2</sub> interface

2017 ◽  
Vol 47 (3) ◽  
pp. 361-368
Author(s):  
Shaohua Qu ◽  
Yongling Du ◽  
Kaifeng Wu ◽  
Guijie Liang ◽  
Meihua Chen ◽  
...  
Keyword(s):  
Charge Separation ◽  
Quantum Rods ◽  
Induced Charge ◽  
Recombination Dynamics

scholarly journals Electrochemical modulation of plasmon-induced charge separation behaviour at Au–TiO2 photocathodes

2019 ◽  
Vol 18 (7) ◽  
pp. 1727-1731 ◽  
Author(s):  
Kazutaka Akiyoshi ◽  
Tetsu Tatsuma
Keyword(s):  
Particle Size ◽  
Charge Separation ◽  
Enhancement Factor ◽  
Induced Charge

Photocathodic currents of ITO/Au/TiO2 electrodes based on plasmon-induced charge separation were enhanced by applying negative potentials, and the enhancement factor was increased as the particle size was decreased.

Effects of particle size and annealing on plasmon-induced charge separation at self-assembled gold nanoparticle arrays

2018 ◽  
Vol 20 (5) ◽  
pp. 3735-3740 ◽  
Author(s):  
Kun-Che Kao ◽  
Hiroyasu Nishi ◽  
Tetsu Tatsuma
Keyword(s):  
Particle Size ◽  
Gold Nanoparticle ◽  
Quantum Efficiency ◽  
Charge Separation ◽  
Internal Quantum Efficiency ◽  
Au Nanoparticle ◽  
Nanoparticle Array ◽  
Nanoparticle Arrays ◽  
Induced Charge ◽  
Interface Mode

The internal quantum efficiency of plasmon-induced charge separation of a Au nanoparticle array on TiO2 without interparticle coupling increases with decreasing particle size. The efficiency is also improved by the enhancement of a plasmonic interface mode.

scholarly journals Population Balance Application in TiO2 Particle Deagglomeration Process Modeling

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3523
Author(s):  
Radosław Krzosa ◽  
Łukasz Makowski ◽  
Wojciech Orciuch ◽  
Radosław Adamek
Keyword(s):  
Particle Size ◽  
Titanium Dioxide ◽  
Mechanistic Model ◽  
Population Balance ◽  
Tio2 Particle ◽  
Application Process ◽  
Titanium Dioxide Powder ◽  
Dioxide Powder ◽  
Computational Fluid Dynamics Cfd ◽  
Hydrodynamic Stresses

The deagglomeration of titanium-dioxide powder in water suspension performed in a stirring tank was investigated. Owing to the widespread applications of the deagglomeration process and titanium dioxide powder, new, more efficient devices and methods of predicting the process result are highly needed. A brief literature review of the application process, the device used, and process mechanism is presented herein. In the experiments, deagglomeration of the titanium dioxide suspension was performed. The change in particle size distribution in time was investigated for different impeller geometries and rotational speeds. The modification of impeller geometry allowed the improvement of the process of solid particle breakage. In the modelling part, numerical simulations of the chosen impeller geometries were performed using computational-fluid-dynamics (CFD) methods whereby the flow field, hydrodynamic stresses, and other useful parameters were calculated. Finally, based on the simulation results, the population-balance with a mechanistic model of suspension flow was developed. Model predictions of the change in particle size showed good agreement with the experimental data. Using the presented method in the process design allowed the prediction of the product size and the comparison of the efficiency of different impeller geometries.

scholarly journals Controlling the oxidation state of molybdenum oxide nanoparticles prepared by ionic liquid/metal sputtering to enhance plasmon-induced charge separation

RSC Advances ◽  
2020 ◽  
Vol 10 (48) ◽  
pp. 28516-28522 ◽  
Author(s):  
Kazutaka Akiyoshi ◽  
Tatsuya Kameyama ◽  
Takahisa Yamamoto ◽  
Susumu Kuwabata ◽  
Tetsu Tatsuma ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Metal ◽  
Oxidation State ◽  
Molybdenum Oxide ◽  
Charge Separation ◽  
Room Temperature ◽  
Room Temperature Ionic Liquid ◽  
Oxide Nanoparticles ◽  
Induced Charge ◽  
Molybdenum Oxide Nanoparticles

MoOx NPs, prepared by sputtering Mo metal on a room-temperature ionic liquid (RTIL) followed by heating in air, produced anodic photocurrents with the excitation of their LSPR peak.

Hydrogen evolution from water based on plasmon-induced charge separation at a TiO2/Au/NiO/Pt system

2017 ◽  
Vol 19 (46) ◽  
pp. 31429-31435 ◽  
Author(s):  
Kun-Che Kao ◽  
Yoshinori Kuroiwa ◽  
Hiroyasu Nishi ◽  
Tetsu Tatsuma
Keyword(s):  
Hydrogen Evolution ◽  
Methanol Oxidation ◽  
Charge Separation ◽  
Au Nanoparticles ◽  
System P ◽  
Water Based ◽  
Induced Charge

Plasmonic Au nanoparticles inject electrons into TiO2 and reduce water to hydrogen at a Pt cathode. Positive charges left in the Au nanoparticles are extracted by NiO and used for methanol oxidation.

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