A Roadmap Towards Visible Light Mediated Electron Transfer Chemistry with Iridium(III) Complexes

ChemPhotoChem ◽  
2020 ◽  
Author(s):  
Robin Bevernaegie ◽  
Sara A.M. Wehlin ◽  
Benjamin Elias ◽  
Ludovic Troian-Gautier
Keyword(s):  
Electron Transfer ◽  
Visible Light ◽  
Mediated Electron Transfer

Enhanced production of H2 under visible light via co-deposited Pt and Ir species on g-C3N4

2020 ◽  
Vol 10 (18) ◽  
pp. 6378-6386
Author(s):  
Chen Chen ◽  
Jianjun Zhao ◽  
Yiming Xu
Keyword(s):  
Electron Transfer ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Hole Transfer ◽  
Photocatalytic Hydrogen Evolution ◽  
Enhanced Production ◽  
Mediated Electron Transfer

Synergism between PtO-mediated electron transfer and IrO2-mediated hole transfer enhanced the photocatalytic hydrogen evolution of g-C3N4.

scholarly journals A Roadmap Towards Visible Light Mediated Electron Transfer Chemistry with Iridium(III) Complexes

ChemPhotoChem ◽  
2021 ◽  
Vol 5 (3) ◽  
pp. 185-185
Author(s):  
Robin Bevernaegie ◽  
Sara A. M. Wehlin ◽  
Benjamin Elias ◽  
Ludovic Troian‐Gautier
Keyword(s):  
Electron Transfer ◽  
Visible Light ◽  
Mediated Electron Transfer

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.

scholarly journals NADPH performs mediated electron transfer in cyanobacterial-driven bio-photoelectrochemical cells

iScience ◽  
2021 ◽  
Vol 24 (1) ◽  
pp. 101892
Author(s):  
Yaniv Shlosberg ◽  
Benjamin Eichenbaum ◽  
Tünde N. Tóth ◽  
Guy Levin ◽  
Varda Liveanu ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photoelectrochemical Cells ◽  
Mediated Electron Transfer

scholarly journals On the role of non-diagonal system–environment interactions in bridge-mediated electron transfer

2020 ◽  
Vol 153 (18) ◽  
pp. 185101
Author(s):  
Nirmalendu Acharyya ◽  
Roman Ovcharenko ◽  
Benjamin P. Fingerhut
Keyword(s):  
Electron Transfer ◽  
System Environment ◽  
Diagonal System ◽  
Mediated Electron Transfer

scholarly journals Strain- and Substrate-Dependent Redox Mediator and Electricity Production by Pseudomonas aeruginosa

2016 ◽  
Vol 82 (16) ◽  
pp. 5026-5038 ◽  
Author(s):  
Erick M. Bosire ◽  
Lars M. Blank ◽  
Miriam A. Rosenbaum
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Electron Transfer ◽  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Pure Culture ◽  
Bioelectrochemical Systems ◽  
Content Type ◽  
Mediated Electron Transfer ◽  
Phenazine Production ◽  
Model Strain

ABSTRACTPseudomonas aeruginosais an important, thriving member of microbial communities of microbial bioelectrochemical systems (BES) through the production of versatile phenazine redox mediators. Pure culture experiments with a model strain revealed synergistic interactions ofP. aeruginosawith fermenting microorganisms whereby the synergism was mediated through the shared fermentation product 2,3-butanediol. Our work here shows that the behavior and efficiency ofP. aeruginosain mediated current production is strongly dependent on the strain ofP. aeruginosa. We compared levels of phenazine production by the previously investigated model strainP. aeruginosaPA14, the alternative model strainP. aeruginosaPAO1, and the BES isolatePseudomonassp. strain KRP1 with glucose and the fermentation products 2,3-butanediol and ethanol as carbon substrates. We found significant differences in substrate-dependent phenazine production and resulting anodic current generation for the three strains, with the BES isolate KRP1 being overall the best current producer and showing the highest electrochemical activity with glucose as a substrate (19 μA cm−2with ∼150 μg ml−1phenazine carboxylic acid as a redox mediator). Surprisingly,P. aeruginosaPAO1 showed very low phenazine production and electrochemical activity under all tested conditions.IMPORTANCEMicrobial fuel cells and other microbial bioelectrochemical systems hold great promise for environmental technologies such as wastewater treatment and bioremediation. While there is much emphasis on the development of materials and devices to realize such systems, the investigation and a deeper understanding of the underlying microbiology and ecology are lagging behind. Physiological investigations focus on microorganisms exhibiting direct electron transfer in pure culture systems. Meanwhile, mediated electron transfer with natural redox compounds produced by, for example,Pseudomonas aeruginosamight enable an entire microbial community to access a solid electrode as an alternative electron acceptor. To better understand the ecological relationships between mediator producers and mediator utilizers, we here present a comparison of the phenazine-dependent electroactivities of threePseudomonasstrains. This work forms the foundation for more complex coculture investigations of mediated electron transfer in microbial fuel cells.

On the theory of nonadiabatic bridge-mediated electron transfer

2003 ◽  
Vol 26 (2) ◽  
pp. 187-196 ◽  
Author(s):  
L. Bade ◽  
E. G. Petrov ◽  
V. May
Keyword(s):  
Electron Transfer ◽  
Mediated Electron Transfer

scholarly journals Free Radical Chemistry Enabled by Visible Light-Induced Electron Transfer

2016 ◽  
Vol 49 (10) ◽  
pp. 2295-2306 ◽  
Author(s):  
Daryl Staveness ◽  
Irene Bosque ◽  
Corey R. J. Stephenson
Keyword(s):  
Electron Transfer ◽  
Free Radical ◽  
Visible Light ◽  
Radical Chemistry ◽  
Free Radical Chemistry
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