Self-assembled material of palladium nanoparticles and a thiacalix[4]arene Cd(ii) complex as an efficient catalyst for nitro-phenol reduction

2015 ◽  
Vol 39 (10) ◽  
pp. 8130-8135 ◽  
Author(s):  
Darsi Rambabu ◽  
Chullikkattil P. Pradeep ◽  
Pooja Pooja ◽  
Abhimanew Dhir
Keyword(s):  
Palladium Nanoparticles ◽  
Cadmium Complex ◽  
Efficient Catalyst ◽  
Self Assembled

A cadmium complex based on the thiacalix[4]arene scaffold is utilized to synthesize a material with palladium nanoparticles, which behaves as an efficient catalyst for the conversion of 4-nitrophenol to 4-aminophenol.

Synthesis of peptide nanofibers decorated with palladium nanoparticles and its application as an efficient catalyst for the synthesis of sulfides via reaction of aryl halides with thiourea or 2-mercaptobenzothiazole

RSC Advances ◽  
2016 ◽  
Vol 6 (64) ◽  
pp. 59410-59421 ◽  
Author(s):  
Arash Ghorbani-Choghamarani ◽  
Zahra Taherinia
Keyword(s):  
Palladium Nanoparticles ◽  
Pd Nanoparticles ◽  
Aryl Halides ◽  
Efficient Catalyst ◽  
Peptide Nanofibers ◽  
Self Assembled ◽  
Supported Pd

In this work supported Pd nanoparticles on a peptide nanofiber (PdNP–PNF) have been preparedviafabrication of self-assembled woven nanofiber from peptide, subsequently immobilization of palladium nanoparticles on this nanostructural compound.

scholarly journals Polyethyleneimine-Oleic Acid Micelles-Stabilized Palladium Nanoparticles as Highly Efficient Catalyst to Treat Pollutants with Enhanced Performance

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1890
Author(s):  
Xiang Lai ◽  
Xuan Zhang ◽  
Shukai Li ◽  
Jie Zhang ◽  
Weifeng Lin ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Palladium Nanoparticles ◽  
Human Life ◽  
Catalytic Performance ◽  
Water Soluble ◽  
Noble Metal Nanoparticles ◽  
Hydrodynamic Diameter ◽  
Efficient Catalyst

Water soluble organic molecular pollution endangers human life and health. It becomes necessary to develop highly stable noble metal nanoparticles without aggregation in solution to improve their catalytic performance in treating pollution. Polyethyleneimine (PEI)-based stable micelles have the potential to stabilize noble metal nanoparticles due to the positive charge of PEI. In this study, we synthesized the amphiphilic PEI-oleic acid molecule by acylation reaction. Amphiphilic PEI-oleic acid assembled into stable PEI-oleic acid micelles with a hydrodynamic diameter of about 196 nm and a zeta potential of about 34 mV. The PEI-oleic acid micelles-stabilized palladium nanoparticles (PO-PdNPsn) were prepared by the reduction of sodium tetrachloropalladate using NaBH4 and the palladium nanoparticles (PdNPs) were anchored in the hydrophilic layer of the micelles. The prepared PO-PdNPsn had a small size for PdNPs and good stability in solution. Noteworthily, PO-PdNPs150 had the highest catalytic activity in reducing 4-nitrophenol (4-NP) (Knor = 18.53 s−1mM−1) and oxidizing morin (Knor = 143.57 s−1M−1) in aqueous solution than other previous catalysts. The enhanced property was attributed to the improving the stability of PdNPs by PEI-oleic acid micelles. The method described in this report has great potential to prepare many kinds of stable noble metal nanoparticles for treating aqueous pollution.

An easily prepared palladium-hydrogel nanocomposite catalyst for C–C coupling reactions

2014 ◽  
Vol 2 (44) ◽  
pp. 18952-18958 ◽  
Author(s):  
Mitasree Maity ◽  
Uday Maitra
Keyword(s):  
Palladium Nanoparticles ◽  
Room Temperature ◽  
Coupling Reaction ◽  
Coupling Reactions ◽  
Sodium Cyanoborohydride ◽  
Efficient Catalyst ◽  
Suzuki Coupling Reaction ◽  
Reaction In Water ◽  
Hydrogel Nanocomposite

Palladium nanoparticles were efficiently prepared in situ by sodium cyanoborohydride reduction of Pd(ii) at room temperature using calcium-cholate hydrogel fibers as templates. The PdNPs self-organize on the gel fibers, which supports the controlled growth as well as stabilization of PdNPs. The hybrid xerogel was used as an efficient catalyst for the Suzuki coupling reaction in water.

scholarly journals Self-Assembled 3D Foam-Like NiCo2 O4 as Efficient Catalyst for Lithium Oxygen Batteries

Small ◽  
2015 ◽  
Vol 12 (5) ◽  
pp. 602-611 ◽  
Author(s):  
Lili Liu ◽  
Jun Wang ◽  
Yuyang Hou ◽  
Jun Chen ◽  
Hua-Kun Liu ◽  
...  
Keyword(s):  
Efficient Catalyst ◽  
Self Assembled ◽  
Lithium Oxygen Batteries

Immobilized Palladium nanoparticles on phosphanamine-grafted cellulose for arylation of uracil

2021 ◽  
Vol 08 ◽  
Author(s):  
Qian Yang ◽  
Na Ma ◽  
Yangqing He ◽  
Xiaojiao Yu ◽  
Binghua Yao
Keyword(s):  
Palladium Nanoparticles ◽  
Suzuki Reaction ◽  
Boronic Acids ◽  
Efficient Catalyst ◽  
Cellulose Material

Background: The synthesis of 5-arylation uracil nucleosides is an imperative challenge. Especially for the method of suzuki reaction using N-unprotected uracil as materials, which holds potential to enhance the yield. Objective: In order to find a more efficient catalyst to increase the yield of aryluracils and aryluridines. Methods: We first constructed the phosphanamine-grafted cellulose (PAGC) from cellulose material. And then prepared the nanocatalyst PAGC/Pd(0) through heating and reducing the mixture of PAGC and Pa(OAc)2. Results: When using this nanocatalyst to catalyze the Suzuki reaction of 5-iodouracil or 5-iodouridine and aryl heterocyclic boronic acids. The arylation yields have been a significantly improvement. Conclusion: This means that the resultant nanocatalyst exhibits a remarkable catalytic efficacy for Suzuki arylation of 5-iodouracil and 5-iodouridine.

Gamma radiation-assisted in situ synthesis of palladium nanoparticles supported on ethylenediamine-functionalized polypropylene fabric as an efficient catalyst for reduction of 4-nitrophenol

2020 ◽  
Vol 44 (44) ◽  
pp. 19337-19350
Author(s):  
Girlie Eunice P. Lopez ◽  
Jordan F. Madrid ◽  
Drexel H. Camacho
Keyword(s):  
Catalytic Activity ◽  
Gamma Radiation ◽  
Palladium Nanoparticles ◽  
In Situ Synthesis ◽  
Chemical Transformations ◽  
Efficient Catalyst ◽  
Polypropylene Fabric ◽  
P Immobilization

Immobilization of Pd nanometals on a functionalized non-woven polypropylene fabric offers heterogenous catalytic activity in many chemical transformations and convenient separation from the reaction mixture.

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