Solvent assisted and solvent free orientation of growth of nanoscaled lanthanide sulfides: tuning of morphology and manifestation of photocatalytic behavior

RSC Advances ◽  
2015 ◽  
Vol 5 (124) ◽  
pp. 102818-102827 ◽  
Author(s):  
Abhisek Brata Ghosh ◽  
Namrata Saha ◽  
Arpita Sarkar ◽  
Divesh N. Srivastava ◽  
Parimal Paul ◽  
...  
Keyword(s):  
Visible Light ◽  
Organic Dyes ◽  
Solvent Free ◽  
Promising Candidate ◽  
Lanthanide Sulfides ◽  
Free Growth

We observed solvent-mediated and solvent-free growth of lanthanide sulfides where EuS emerged as a promising candidate for visible-light induced photocatalysis towards the degradation of toxic organic dyes.

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.

Carrier Engineering of Zr-mediated Ta3N5 Film as Efficient Photoanode for Solar Water Splitting

2021 ◽  
Author(s):  
Xin Zou ◽  
Xueyang Han ◽  
Chengxiong Wang ◽  
Yunkun Zhao ◽  
Chun Du ◽  
...  
Keyword(s):  
Band Structure ◽  
Visible Light ◽  
Water Splitting ◽  
Light Absorption ◽  
Photoelectrochemical Water Splitting ◽  
Promising Candidate ◽  
Visible Light Absorption ◽  
Solar Water ◽  
Solar Water Splitting

Ta3N5 is regarded as a promising candidate material with adequate visible light absorption and band structure for photoelectrochemical water splitting. However, the performance of Ta3N5 is severely limited by the...

Photodegradation of organic dyes by PAN/SiO2-TiO2-NH2 nanofiber membrane under visible light

2019 ◽  
Vol 224 ◽  
pp. 509-514 ◽  
Author(s):  
Alaa Khalil ◽  
Nada M. Aboamera ◽  
Walaa S. Nasser ◽  
Walaa H. Mahmoud ◽  
Gehad G. Mohamed
Keyword(s):  
Visible Light ◽  
Organic Dyes ◽  
Nanofiber Membrane

Solvent-free coupling of aryl halides with pyrroles applying visible-light photocatalysis

2017 ◽  
Vol 2 (4) ◽  
pp. 472-478 ◽  
Author(s):  
M. Obst ◽  
R. S. Shaikh ◽  
B. König
Keyword(s):  
Visible Light ◽  
Solvent Free ◽  
Aryl Halides ◽  
Visible Light Photocatalysis ◽  
Visible Light Driven

A novel reactor for solvent-free, visible-light-driven photocatalytic transformations was developed.

scholarly journals Applications of organocatalysed visible-light photoredox reactions for medicinal chemistry

2018 ◽  
Vol 14 ◽  
pp. 2035-2064 ◽  
Author(s):  
Michael K Bogdos ◽  
Emmanuel Pinard ◽  
John A Murphy
Keyword(s):  
Pharmaceutical Industry ◽  
Transition Metals ◽  
Visible Light ◽  
Reaction Mechanisms ◽  
General Class ◽  
Medicinal Chemistry ◽  
Organic Dyes ◽  
General Reaction ◽  
High Degree ◽  
Synthetic Medicinal

The focus of this review is to provide an overview of the field of organocatalysed photoredox chemistry relevant to synthetic medicinal chemistry. Photoredox transformations have been shown to enable key transformations that are important to the pharmaceutical industry. This type of chemistry has also demonstrated a high degree of sustainability, especially when organic dyes can be employed in place of often toxic and environmentally damaging transition metals. The sections are arranged according to the general class of the presented reactions and the value of these methods to medicinal chemistry is considered. An overview of the general characteristics of the photocatalysts as well as some electrochemical data is presented. In addition, the general reaction mechanisms for organocatalysed photoredox transformations are discussed and some individual mechanistic considerations are highlighted in the text when appropriate.

Solvent-free growth of carbon dots by sputter-plasma assisted chemical vapour deposition over large areas

Carbon ◽  
2019 ◽  
Vol 146 ◽  
pp. 28-35 ◽  
Author(s):  
Jaewoo Park ◽  
Paul Bazylewski ◽  
Victor Wong ◽  
Harshil Shah ◽  
Giovanni Fanchini
Keyword(s):  
Chemical Vapour Deposition ◽  
Carbon Dots ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Solvent Free ◽  
Free Growth

scholarly journals Copper’s rapid ascent in visible-light photoredox catalysis

Science ◽  
2019 ◽  
Vol 364 (6439) ◽  
pp. eaav9713 ◽  
Author(s):  
Asik Hossain ◽  
Aditya Bhattacharyya ◽  
Oliver Reiser
Keyword(s):  
Visible Light ◽  
Organic Dyes ◽  
Low Cost ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
Photoredox Catalysis ◽  
Cross Coupling Reactions ◽  
Rapid Ascent ◽  
Catalyzed Reactions ◽  
Metal Catalyzed

Visible-light photoredox catalysis offers a distinct activation mode complementary to thermal transition metal catalyzed reactions. The vast majority of photoredox processes capitalizes on precious metal ruthenium(II) or iridium(III) complexes that serve as single-electron reductants or oxidants in their photoexcited states. As a low-cost alternative, organic dyes are also frequently used but in general suffer from lower photostability. Copper-based photocatalysts are rapidly emerging, offering not only economic and ecological advantages but also otherwise inaccessible inner-sphere mechanisms, which have been successfully applied to challenging transformations. Moreover, the combination of conventional photocatalysts with copper(I) or copper(II) salts has emerged as an efficient dual catalytic system for cross-coupling reactions.

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