Silver nanoparticles supported on P, Se-codoped g-C3N4 nanosheet as a novel heterogeneous catalyst for reduction of nitroaromatics to their corresponding amines

2021 ◽  
pp. 130646
Author(s):  
Mohadese Piri ◽  
Majid M. Heravi ◽  
Ali Elhampour ◽  
Firouzeh Nemati
Keyword(s):  
Silver Nanoparticles ◽  
Heterogeneous Catalyst

Zinc oxide supported silver nanoparticles as a heterogeneous catalyst for production of biodiesel from palm oil

2019 ◽  
Vol 39 (3) ◽  
Author(s):  
Ikbal B. Laskar ◽  
Lalthazuala Rokhum ◽  
Rajat Gupta ◽  
Sushovan Chatterjee
Keyword(s):  
Silver Nanoparticles ◽  
Zinc Oxide ◽  
Heterogeneous Catalyst ◽  
Palm Oil

In situ and facile synthesis of silver nanoparticles on baby wipes and their applications in catalysis and SERS

RSC Advances ◽  
2016 ◽  
Vol 6 (6) ◽  
pp. 5016-5023 ◽  
Author(s):  
Bharat Baruah
Keyword(s):  
Silver Nanoparticles ◽  
Composite Materials ◽  
Heterogeneous Catalyst ◽  
Facile Synthesis ◽  
Sers Substrates ◽  
Efficient Heterogeneous Catalyst

Silver nanoparticles were immobilized on fibers to create composite materials. The composites are shown to be efficient heterogeneous catalyst with very good recyclability. These composite materials are also proven to be good SERS substrates.

scholarly journals Textile-supported silver nanoparticles as a highly efficient and recyclable heterogeneous catalyst for nitroaromatic reduction at room temperature

RSC Advances ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 6288-6292 ◽  
Author(s):  
Wei Feng ◽  
Tingting Huang ◽  
Liqian Gao ◽  
Xianfeng Yang ◽  
Wenbin Deng ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Heterogeneous Catalyst ◽  
Room Temperature ◽  
Highly Efficient ◽  
Excellent Activity ◽  
Recyclable Heterogeneous Catalyst

A novel textile-supported nanosilver (TsNS) catalyst was prepared and applied in nitroaromatic reduction with excellent activity, stability and recyclability.

Silver nanoparticles supported on silica-coated ferrite as magnetic and reusable catalysts for oxidant-free alcohol dehydrogenation

RSC Advances ◽  
2015 ◽  
Vol 5 (29) ◽  
pp. 22503-22509 ◽  
Author(s):  
Ahmad Bayat ◽  
Mehdi Shakourian-Fard ◽  
Nona Ehyaei ◽  
Mohammad Mahmoodi Hashemi
Keyword(s):  
Silver Nanoparticles ◽  
Heterogeneous Catalyst ◽  
Carbonyl Compounds ◽  
Free Alcohol ◽  
Alcohol Dehydrogenation ◽  
Recyclable Heterogeneous Catalyst

The oxidant-free dehydrogenation of alcohols to corresponding carbonyl compounds has been performed by using silver (0) nanoparticles supported on silica-coated ferrite as an efficient and recyclable heterogeneous catalyst.

scholarly journals Magnetic Chitosan-Supported Silver Nanoparticles: A Heterogeneous Catalyst for the Reduction of 4-Nitrophenol

Catalysts ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 839 ◽  
Author(s):  
Hasan ◽  
Shehadi ◽  
Al-Bab ◽  
Elgamouz
Keyword(s):  
Silver Nanoparticles ◽  
Heterogeneous Catalyst ◽  
Active Catalyst ◽  
Low Cost ◽  
Catalytic Efficiency ◽  
Magnetic Chitosan ◽  
X Ray ◽  
Surface Modified ◽  
First Time ◽  
Magnetic Fe3o4

Developing heterogeneous catalyst using chitosan (CS) and magnetic Fe3O4 as support has been remarkably attractive due to their availability, low cost and non-toxicity. In this work, a heterogeneous catalyst (denoted as Fe3O4@CS@MS@Ag) was fabricated by the deposition of silver nanoparticles on magnetic chitosan via an easy and facile modification of its surface with methyl salicylate (MS). The catalyst was characterized using Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), X-ray diffractometer (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). To the best of our knowledge, for the first time, CS decorated Fe3O4 (Fe3O4@CS) has shown the catalytic activity for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) in presence of NaBH4. Surface modified magnetic chitosan (Fe3O4@CS@MS) also acts as active catalyst towards the reduction of 4-NP. However, catalytic efficiency has increased fourfold when silver-nanoparticles-deposited magnetic chitosan (Fe3O4@CS@MS@Ag) used as our target catalyst. The catalyst was separated with external magnet after each cycle of catalytic reaction and reused effectively five times with almost 90% efficiency.

scholarly journals Silver Nanoparticles Supported on Chitosan as a Green and Robust Heterogeneous Catalyst for Direct Synthesis of Nitrogen Heterocyclic Compounds under Green Conditions

2019 ◽  
Vol 14 (1) ◽  
pp. 51 ◽  
Author(s):  
Seyedeh Fazileh Fazileh Hamzavi ◽  
Shahla Jamili ◽  
Morteza Yousefzadi ◽  
Ali Mashinchian Moradi ◽  
Narges Amrollahi Biuki
Keyword(s):  
Silver Nanoparticles ◽  
Heterogeneous Catalyst ◽  
Heterocyclic Compounds ◽  
Direct Synthesis ◽  
Biologically Active ◽  
Imidazole Derivatives ◽  
Solvent Free Conditions ◽  
Three Component Reaction ◽  
Green Conditions ◽  
Nitrogen Heterocyclic

The catalytic efficiency of silver nanoparticles supported on chitosan as a green, robust, and efficient nanocatalyst for the direct synthesis of biologically active compounds, such as: imidazole derivatives as well as pyrazine scaffolds through multi-component reactions strategy, have been demonstrated. In this work, imidazole derivatives were achieved via pseudo four-component reactions by utilization of benzaldehydes, benzils, anilines, and ammonium acetate under solvent-free conditions. Moreover, pyrazine scaffolds were synthesized through a three-component reaction of phenylenediamine derivatives, isocyanides and various ketones in water. The main advantages of this protocol are the  reusability of the catalyst, operational simplicity, mild reaction conditions, and high-yielding. Copyright © 2019 BCREC Group. All rights reservedReceived: 19th January 2018; Revised: 10th September 2018; Accepted: 18th September 2018; Available online: 25th January 2019; Published regularly: April 2019How to Cite: Hamzavi, S.F., Jamili, S., Yousefzadi, M., Moradi, A.M., Biuki, N.A. (2019). Silver Nanoparticles Supported on Chitosan as a Green and Robust Heterogeneous Catalyst for Direct Synthesis of Nitrogen Heterocyclic Compounds under Green Conditions. Bulletin of Chemical Reaction Engineering & Catalysis, 14 (1): 51-59 (doi:10.9767/bcrec.14.1.2105.51-59)Permalink/DOI: https://doi.org/10.9767/bcrec.14.1.2105.51-59 

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