ChemInform Abstract: Water-Soluble Palladium Nanoparticles: Click Synthesis and Applications as a Recyclable Catalyst in Suzuki Cross-Couplings in Aqueous Media.

ChemInform ◽  
2011 ◽  
Vol 42 (5) ◽  
pp. no-no
Author(s):  
Nereida Mejias ◽  
Roser Pleixats ◽  
Alexandr Shafir ◽  
Mercedes Medio-Simon ◽  
Gregorio Asensio
Keyword(s):  
Palladium Nanoparticles ◽  
Aqueous Media ◽  
Recyclable Catalyst ◽  
Water Soluble ◽  
Click Synthesis

Water-Soluble Palladium Nanoparticles: Click Synthesis and Applications as a Recyclable Catalyst in Suzuki Cross-Couplings in Aqueous Media

2010 ◽  
Vol 2010 (26) ◽  
pp. 5090-5099 ◽  
Author(s):  
Nereida Mejías ◽  
Roser Pleixats ◽  
Alexandr Shafir ◽  
Mercedes Medio-Simón ◽  
Gregorio Asensio
Keyword(s):  
Palladium Nanoparticles ◽  
Aqueous Media ◽  
Recyclable Catalyst ◽  
Water Soluble ◽  
Click Synthesis

Efficient one-pot click synthesis of β-hydroxy-1,2,3-triazoles catalyzed by copper(i)@phosphorated SiO2via multicomponent reaction in aqueous media

2014 ◽  
Vol 38 (11) ◽  
pp. 5429-5435 ◽  
Author(s):  
Hossein Naeimi ◽  
Vajihe Nejadshafiee
Keyword(s):  
Multicomponent Reaction ◽  
Aqueous Media ◽  
Recyclable Catalyst ◽  
One Pot ◽  
Click Synthesis

Cu(i)@phosphorated SiO2 as novel, eco-friendly, easy to prepare, recyclable catalyst for the synthesis of β-hydroxy-1,2,3-triazoles in water is reported.

scholarly journals In situ grown palladium nanoparticles on polyester fabric as easy-separable and recyclable catalyst for Suzuki-Miyaura reaction

2021 ◽  
pp. 106328
Author(s):  
Tiefeng Xu ◽  
Panting Lu ◽  
Sebastian Wohlrab ◽  
Wenxing Chen ◽  
Armin Springer ◽  
...  
Keyword(s):  
Palladium Nanoparticles ◽  
Polyester Fabric ◽  
Recyclable Catalyst

scholarly journals Self-Healing Polymer-Clay Hybrids by Facile Complexation of a Waterborne Polymer with a Clay

2021 ◽  
Author(s):  
Aranee Pleng Teepakakorn ◽  
Makoto Ogawa
Keyword(s):  
Vinyl Alcohol ◽  
Aqueous Media ◽  
Water Soluble ◽  
Poly Vinyl Alcohol ◽  
Self Healing ◽  
Soluble Polymer ◽  
Water Soluble Polymer ◽  
Smectite Clay

Water-induced self-healing materials were prepared by the hybridization of a water-soluble polymer, poly(vinyl alcohol), with a smectite clay by mixing in an aqueous media and subsequent casting. Without using chemical...

Dissociation of imino proton(s) of a highly water-soluble metal-free phthalocyanine and determination of its pKa value in water

2013 ◽  
Vol 17 (06n07) ◽  
pp. 447-453 ◽  
Author(s):  
Hiroaki Isago ◽  
Harumi Fujita
Keyword(s):  
Aqueous Media ◽  
Thermal Reaction ◽  
Water Soluble ◽  
Acid Dissociation ◽  
Acid Dissociation Constant ◽  
Metal Free ◽  
Imino Proton ◽  
Pka Value ◽  
Triton X

Dissociation of imino proton(s) in the cavity of the macrocycle of a highly water-soluble, metal-free phthalocyanine ( H 2( H 4 tsppc ); where H 4 tsppc denotes tetrakis{(2′,6′-dimethyl-4′-sulfonic acid)phenoxy}phthalocyaninate) in ethanolic and aqueous solutions has spectrophotometrically been investigated. The spectral changes associated with reaction with NaOH have been found to involve one-proton transfer process in aqueous media while two-protons process in ethanolic media. The acid-dissociation constant of the first imino proton in water (in the presence of Triton X-100) has been determined to be 12.5 ± 0.2 (as pKa) at 25 °C. The doubly deprotonated species in EtOH has been easily converted to its corresponding cobalt(II) derivative by thermal reaction with anhydrous CoCl 2.

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.

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