Improved quality of electrochemically polymerized luminescent films on Au-nanoparticle modified electrodes: Au-nanoparticle induced interfacial nucleation and fast electron transfer

2017 ◽  
Vol 5 (45) ◽  
pp. 11798-11805 ◽  
Author(s):  
Rong Wang ◽  
Cao Liu ◽  
Xuehong Zhou ◽  
Linlin Liu ◽  
Yuguang Ma
Keyword(s):  
Electron Transfer ◽  
Fast Electron ◽  
Transfer Rate ◽  
Au Nanoparticles ◽  
Modified Electrodes ◽  
Au Nanoparticle ◽  
Electron Transfer Rate ◽  
Luminescent Films

Au-Nanoparticles induced interfacial nucleation and increased the electron-transfer rate of the EP process to improve the quality of EP films.

Tuning the Photocatalytic Performance of Plasmonic Nanocomposites (ZnO/Aux) Driven in Visible Light

2019 ◽  
Vol 8 (1) ◽  
pp. 56-61
Author(s):  
Aneeya K. Samantara ◽  
Debasrita Dash ◽  
Dipti L. Bhuyan ◽  
Namita Dalai ◽  
Bijayalaxmi Jena
Keyword(s):  
Electron Transfer ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Transfer Rate ◽  
Photocatalytic Performance ◽  
Light Exposure ◽  
Au Nanoparticle ◽  
Electron Transfer Rate ◽  
Au Nps ◽  
Zno Nanostructure

: In this article, we explored the possibility of controlling the reactivity of ZnO nanostructures by modifying its surface with gold nanoparticles (Au NPs). By varying the concentration of Au with different wt% (x = 0.01, 0.05, 0.08, 1 and 2), we have synthesized a series of (ZnO/Aux) nanocomposites (NCs). A thorough investigation of the photocatalytic performance of different wt% of Au NPs on ZnO nanosurface has been carried out. It was observed that ZnO/Au0.08 nanocomposite showed the highest photocatalytic activity among all concentrations of Au on the ZnO surface, which degrades the dye concentration within 2 minutes of visible light exposure. It was further revealed that with an increase in the size of plasmonic nanoparticles beyond 0.08%, the accessible surface area of the Au nanoparticle decreases. The photon absorption capacity of Au nanoparticle decreases beyond 0.08% resulting in a decrease in electron transfer rate from Au to ZnO and a decrease of photocatalytic activity. Background: Due to the industrialization process, most of the toxic materials go into the water bodies, affecting the water and our ecological system. The conventional techniques to remove dyes are expensive and inefficient. Recently, heterogeneous semiconductor materials like TiO2 and ZnO have been regarded as potential candidates for the removal of dye from the water system. Objective: To investigate the photocatalytic performance of different wt% of Au NPs on ZnO nanosurface and the effect of the size of Au NPs for photocatalytic performance in the degradation process. Methods: A facile microwave method has been adopted for the synthesis of ZnO nanostructure followed by a reduction of gold salt in the presence of ZnO nanostructure to form the composite. Results: ZnO/Au0.08 nanocomposite showed the highest photocatalytic activity which degrades the dye concentration within 2 minutes of visible light exposure. The schematic mechanism of electron transfer rate was discussed. Conclusion: Raspberry shaped ZnO nanoparticles modified with different percentages of Au NPs showed good photocatalytic behavior in the degradation of dye molecules. The synergetic effect of unique morphology of ZnO and well anchored Au nanostructures plays a crucial role.

Au nanoparticle-doped Co3O4–CoFe2O4@SiO2 as a catalyst for visible-light-driven water oxidation

2018 ◽  
Vol 42 (18) ◽  
pp. 14757-14765 ◽  
Author(s):  
Wenlan Ma ◽  
Hui Li ◽  
Qian Xu ◽  
Yi Zhang ◽  
Wei Wang ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Electron Transfer ◽  
Visible Light ◽  
Water Oxidation ◽  
Transfer Rate ◽  
Au Nanoparticle ◽  
Low Dielectric Constant ◽  
Electron Transfer Rate ◽  
Low Dielectric ◽  
Visible Light Driven

Composites of low dielectric constant SiO2, Au and metal oxide was obtained, it showed higher O2 evolution performance due to enhancing the electron transfer rate.

A fast electron transfer rate for the oxidation of ferrocene in acetonitrile or dichloromethane at platinum disk ultramicroelectrodes

1988 ◽  
Vol 60 (18) ◽  
pp. 1878-1882 ◽  
Author(s):  
A. M. Bond ◽  
T. L. E. Henderson ◽  
D. R. Mann ◽  
T. F. Mann ◽  
W. Thormann ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Fast Electron ◽  
Transfer Rate ◽  
Electron Transfer Rate

scholarly journals Highly Organized Ferrocene-Functionalized Nanoporous Silica Films with an Extremely Fast Electron-Transfer Rate for an Intrinsically Nonconducting Oxide-Modified Electrode

2015 ◽  
Vol 2 (11) ◽  
pp. 1695-1698 ◽  
Author(s):  
Pierre Audebert ◽  
Neus Vilà ◽  
Clémence Allain ◽  
Franck Maisonneuve ◽  
Alain Walcarius ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Modified Electrode ◽  
Fast Electron ◽  
Transfer Rate ◽  
Nanoporous Silica ◽  
Electron Transfer Rate ◽  
Silica Films

The Single-Molecule Conductance and Electrochemical Electron-Transfer Rate Are Related by a Power Law

ACS Nano ◽  
2013 ◽  
Vol 7 (6) ◽  
pp. 5391-5401 ◽  
Author(s):  
Emil Wierzbinski ◽  
Ravindra Venkatramani ◽  
Kathryn L. Davis ◽  
Silvia Bezer ◽  
Jing Kong ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Single Molecule ◽  
Power Law ◽  
Transfer Rate ◽  
Electron Transfer Rate
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