scholarly journals Role of Surface-Capping Ligands in Photoexcited Electron Transfer between CdS Nanorods and [FeFe] Hydrogenase and the Subsequent H2 Generation

2017 ◽  
Vol 122 (1) ◽  
pp. 741-750 ◽  
Author(s):  
Molly B. Wilker ◽  
James K. Utterback ◽  
Sophie Greene ◽  
Katherine A. Brown ◽  
David W. Mulder ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photoexcited Electron ◽  
H2 Generation ◽  
Cds Nanorods ◽  
Surface Capping ◽  
Capping Ligands

Understanding the Role of Surface Capping Ligands in Passivating the Quantum Dots Using Copper Dopants as Internal Sensor

2016 ◽  
Vol 120 (35) ◽  
pp. 19785-19795 ◽  
Author(s):  
G. Krishnamurthy Grandhi ◽  
Arunkumar M. ◽  
Ranjani Viswanatha
Keyword(s):  
Quantum Dots ◽  
Surface Capping ◽  
Capping Ligands

Electron Transfer Rate vs Recombination Losses in Photocatalytic H2 Generation on Pt-Decorated CdS Nanorods

2016 ◽  
Vol 1 (6) ◽  
pp. 1137-1142 ◽  
Author(s):  
Thomas Simon ◽  
Michael T. Carlson ◽  
Jacek K. Stolarczyk ◽  
Jochen Feldmann
Keyword(s):  
Electron Transfer ◽  
Transfer Rate ◽  
Electron Transfer Rate ◽  
H2 Generation ◽  
Cds Nanorods ◽  
Photocatalytic H2 Generation

scholarly journals Ligand removal from CdS quantum dots for enhanced photocatalytic H2 generation in pH neutral water

2016 ◽  
Vol 4 (8) ◽  
pp. 2856-2862 ◽  
Author(s):  
Christina M. Chang ◽  
Katherine L. Orchard ◽  
Benjamin C. M. Martindale ◽  
Erwin Reisner
Keyword(s):  
Quantum Dots ◽  
Hydrogen Evolution ◽  
Cds Quantum Dots ◽  
Photocatalytic Hydrogen Evolution ◽  
H2 Generation ◽  
Surface Capping ◽  
Cds Qds ◽  
Neutral Water ◽  
Photocatalytic H2 Generation ◽  
Capping Ligands

Photocatalytic hydrogen evolution activity of CdS QDs is 175 times higher in pH neutral water when surface capping ligands are removed.

Probing the role of oscillator strength and charge of exciton forming molecular J-aggregates in controlling nanoscale plasmon–exciton interactions

2020 ◽  
Vol 22 (36) ◽  
pp. 20499-20506
Author(s):  
Kamalika Das ◽  
Jyotirban Dey ◽  
Mrigank Singh Verma ◽  
Manish Kumar ◽  
Manabendra Chandra
Keyword(s):  
Oscillator Strength ◽  
Exciton Interaction ◽  
Exciton Interactions ◽  
Surface Capping ◽  
J Aggregates ◽  
Capping Ligands

In this study, we probe into the roles of exciton oscillator strength and charge of J-aggregates as well as nanoparticle's surface capping ligands in dictating the plasmon–exciton interaction.

scholarly journals Conversion of Methanol on Rutile TiO2 (110) and Tungsten Oxide Clusters: 2. The Role of Defects and Electron Transfer in Bifunctional Oxidic Photocatalysts

2021 ◽  
Author(s):  
Lars Mohrhusen ◽  
Jessica Kräuter ◽  
Katharina Al-Shamery
Keyword(s):  
Electron Transfer ◽  
Transition Metal ◽  
Metal Oxide ◽  
Tungsten Oxide ◽  
Organic Compounds ◽  
Uv Irradiation ◽  
Organic P ◽  
Rutile Tio2 ◽  
Metal Oxide Surfaces

The photochemical conversion of organic compounds on tailored transition metal oxide surfaces by (UV) irradiation has found wide applications ranging from the production of chemicals to the degradation of organic...

Improving peroxymonosulfate activation by copper ion-saturated adsorbent-based single atom catalysts for the degradation of organic contaminants: electron-transfer mechanism and the key role of Cu single atoms

2021 ◽  
Author(s):  
Jingwen Pan ◽  
Baoyu Gao ◽  
Pijun Duan ◽  
Kangying Guo ◽  
Muhammad Akram ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Organic Contaminants ◽  
High Salinity ◽  
Copper Ion ◽  
Single Atom ◽  
Electron Transfer Mechanism ◽  
Persulfate Oxidation ◽  
Single Atoms ◽  
Oxidation Technology

Nonradical pathway-based persulfate oxidation technology is considered to be a promising method for high-salinity organic wastewater treatment.

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 Theoretical Study on the Photo-Oxidation and Photoreduction of an Azetidine Derivative as a Model of DNA Repair

Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 2911
Author(s):  
Miriam Navarrete-Miguel ◽  
Antonio Francés-Monerris ◽  
Miguel A. Miranda ◽  
Virginie Lhiaubet-Vallet ◽  
Daniel Roca-Sanjuán
Keyword(s):  
Electron Transfer ◽  
Energy Barrier ◽  
Ring Opening ◽  
Dna Lesions ◽  
Barrier Heights ◽  
Dna Lesion ◽  
Electron Reduction ◽  
The Stability ◽  
Electron Transfer Processes

Photocycloreversion plays a central role in the study of the repair of DNA lesions, reverting them into the original pyrimidine nucleobases. Particularly, among the proposed mechanisms for the repair of DNA (6-4) photoproducts by photolyases, it has been suggested that it takes place through an intermediate characterized by a four-membered heterocyclic oxetane or azetidine ring, whose opening requires the reduction of the fused nucleobases. The specific role of this electron transfer step and its impact on the ring opening energetics remain to be understood. These processes are studied herein by means of quantum-chemical calculations on the two azetidine stereoisomers obtained from photocycloaddition between 6-azauracil and cyclohexene. First, we analyze the efficiency of the electron-transfer processes by computing the redox properties of the azetidine isomers as well as those of a series of aromatic photosensitizers acting as photoreductants and photo-oxidants. We find certain stereodifferentiation favoring oxidation of the cis-isomer, in agreement with previous experimental data. Second, we determine the reaction profiles of the ring-opening mechanism of the cationic, neutral, and anionic systems and assess their feasibility based on their energy barrier heights and the stability of the reactants and products. Results show that oxidation largely decreases the ring-opening energy barrier for both stereoisomers, even though the process is forecast as too slow to be competitive. Conversely, one-electron reduction dramatically facilitates the ring opening of the azetidine heterocycle. Considering the overall quantum-chemistry findings, N,N-dimethylaniline is proposed as an efficient photosensitizer to trigger the photoinduced cycloreversion of the DNA lesion model.

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