scholarly journals Chirality meets visible-light photocatalysis in a molecular cerium vanadium oxide cluster

2014 ◽  
Vol 50 (15) ◽  
pp. 1827 ◽  
Author(s):  
Andrey Seliverstov ◽  
Carsten Streb
Keyword(s):  
Visible Light ◽  
Vanadium Oxide ◽  
Visible Light Photocatalysis ◽  
Oxide Cluster

scholarly journals Back Cover: Visible-Light-Driven Water Oxidation by a Molecular Manganese Vanadium Oxide Cluster (Angew. Chem. Int. Ed. 21/2016)

2016 ◽  
Vol 55 (21) ◽  
pp. 6344-6344 ◽  
Author(s):  
Benjamin Schwarz ◽  
Johannes Forster ◽  
McKenna K. Goetz ◽  
Duygu Yücel ◽  
Claudia Berger ◽  
...  
Keyword(s):  
Visible Light ◽  
Vanadium Oxide ◽  
Water Oxidation ◽  
Oxide Cluster ◽  
Back Cover ◽  
Visible Light Driven

ChemInform Abstract: Visible-Light-Driven Water Oxidation by a Molecular Manganese Vanadium Oxide Cluster.

ChemInform ◽  
2016 ◽  
Vol 47 (29) ◽  
Author(s):  
Benjamin Schwarz ◽  
Johannes Forster ◽  
McKenna K. Goetz ◽  
Duygu Yuecel ◽  
Claudia Berger ◽  
...  
Keyword(s):  
Visible Light ◽  
Vanadium Oxide ◽  
Water Oxidation ◽  
Oxide Cluster ◽  
Visible Light Driven

Visible-Light-Driven Water Oxidation by a Molecular Manganese Vanadium Oxide Cluster

2016 ◽  
Vol 55 (21) ◽  
pp. 6329-6333 ◽  
Author(s):  
Benjamin Schwarz ◽  
Johannes Forster ◽  
McKenna K. Goetz ◽  
Duygu Yücel ◽  
Claudia Berger ◽  
...  
Keyword(s):  
Visible Light ◽  
Vanadium Oxide ◽  
Water Oxidation ◽  
Oxide Cluster ◽  
Visible Light Driven

scholarly journals Visible light photooxidative performance of a high-nuclearity molecular bismuth vanadium oxide cluster

2014 ◽  
Vol 5 ◽  
pp. 711-716 ◽  
Author(s):  
Johannes Tucher ◽  
Carsten Streb
Keyword(s):  
Visible Light ◽  
Vanadium Oxide ◽  
Photocatalytic Performance ◽  
Intermediate Formation ◽  
Radical Scavenger ◽  
High Turnover ◽  
Oxide Cluster ◽  
Mechanistic Analysis ◽  
Hydroxyl Radical Scavenger ◽  
Reaction Proceeds

The visible light photooxidative performance of a new high-nuclearity molecular bismuth vanadium oxide cluster, H3[{Bi(dmso)3}4V13O40], is reported. Photocatalytic activity studies show faster reaction kinetics under anaerobic conditions, suggesting an oxygen-dependent quenching of the photoexcited cluster species. Further mechanistic analysis shows that the reaction proceeds via the intermediate formation of hydroxyl radicals which act as oxidant. Trapping experiments using ethanol as a hydroxyl radical scavenger show significantly decreased photocatalytic substrate oxidation in the presence of EtOH. Photocatalytic performance analyses using monochromatic visible light irradiation show that the quantum efficiency Φ for indigo photooxidation is strongly dependent on the irradiation wavelength, with higher quantum efficiencies being observed at shorter wavelengths (Φ395nm ca. 15%). Recycling tests show that the compound can be employed as homogeneous photooxidation catalyst multiple times without loss of catalytic activity. High turnover numbers (TON ca. 1200) and turnover frequencies up to TOF ca. 3.44 min−1 are observed, illustrating the practical applicability of the cluster species.

Rhodamines as Photocatalyst in Organic Synthesis

2020 ◽  
Vol 07 ◽  
Author(s):  
Avik K. Bagdi ◽  
Papiya Sikdar
Keyword(s):  
Visible Light ◽  
Organic Synthesis ◽  
Organic Dyes ◽  
Transition Metal Catalysts ◽  
Visible Light Photocatalysis ◽  
Eosin Y ◽  
Organic Transformations ◽  
The Sustainable Development ◽  
Mechanistic Pathway ◽  
Green Model

Abstract:: Organic synthesis under environment friendly conditions has great impact in the sustainable development. In this context, visible light photocatalysis has emerged as a green model as this offers an energy-efficient pathway towards the organic transformation. Different transition-metal catalysts (Ir-, Ru-, Cu- etc) and organic dyes (eosin Y, rose bengal, methylene blue etc) are well-known photocatalysts in organic synthesis. Apart from the well-known organophotoredox catalysts, rhodamines (Rhodamine B and Rhodamine 6G) have been also employed as efficient photocatalysts for different organic transformations. In this review, we will focus on the photocatalysis by rhodamines in organic synthesis. Mechanistic pathway of the methodologies will also be discussed. We believe this review will stimulate the employment of rhodamines in the visible light photocatalysis for efficient organic transformations in the future.

Carbon quantum dot-sensitized hollow TiO2 spheres for high-performance visible light photocatalysis

2021 ◽  
Author(s):  
Xianfeng Zhang ◽  
Zongqun Li ◽  
Shaowen Xu ◽  
Yaowen Ruan
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
High Performance ◽  
Carbon Quantum Dots ◽  
Visible Light Photocatalysis ◽  
Carbon Quantum Dot ◽  
Visible Light Photocatalytic

TiO2/CQD composites were synthesized through carbon quantum dots covalently attached to the surface of hollow TiO2 spheres for visible light photocatalytic degradation of organics.

A Donor–Acceptor [2]Catenane for Visible Light Photocatalysis

2021 ◽  
Author(s):  
Yang Jiao ◽  
Luka Đorđević ◽  
Haochuan Mao ◽  
Ryan M. Young ◽  
Tyler Jaynes ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Photocatalysis ◽  
Donor Acceptor

scholarly journals Mizoroki–Heck type reactions and synthesis of 1,4-dicarbonyl compounds by heterogeneous organic semiconductor photocatalysis

2021 ◽  
Vol 23 (5) ◽  
pp. 2017-2024
Author(s):  
Jagadish Khamrai ◽  
Saikat Das ◽  
Aleksandr Savateev ◽  
Markus Antonietti ◽  
Burkhard König
Keyword(s):  
Visible Light ◽  
Vinyl Acetate ◽  
Organic Semiconductor ◽  
Alkyl Halides ◽  
Visible Light Photocatalysis ◽  
Dicarbonyl Compounds ◽  
Semiconductor Photocatalysis ◽  
Type Coupling ◽  
Styrene Derivatives ◽  
Tertiary Alkyl

We report the synthesis of 1,4-dicarbonyl compounds and substituted alkenes (Mizoroki–Heck type coupling) starting from secondary and tertiary alkyl halides and vinyl acetate or styrene derivatives using visible-light photocatalysis.

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