Oleic acid as the capping agent in the synthesis of noble metal nanoparticles in imidazolium-based ionic liquids

2006 ◽  
pp. 2545 ◽  
Author(s):  
Yong Wang ◽  
Hong Yang
Keyword(s):  
Ionic Liquids ◽  
Oleic Acid ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Noble Metal Nanoparticles ◽  
Capping Agent

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.

Formate Ionic Liquids Playing the Roles of Reducer and Stabilizer for the Synthesis of Noble Metal Nanoparticles

2017 ◽  
Vol 46 (9) ◽  
pp. 1344-1346 ◽  
Author(s):  
Shinya Okazoe ◽  
Yoshiro Yasaka ◽  
Masakatsu Ueno ◽  
Yoshifumi Kimura
Keyword(s):  
Ionic Liquids ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Noble Metal Nanoparticles

Conversion of lignin model compounds under mild conditions in pseudo-homogeneous systems

2016 ◽  
Vol 18 (8) ◽  
pp. 2341-2352 ◽  
Author(s):  
Lu Chen ◽  
Jiayu Xin ◽  
Lingli Ni ◽  
Huixian Dong ◽  
Dongxia Yan ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Catalyst System ◽  
Noble Metal Nanoparticles ◽  
Homogeneous Catalyst ◽  
Model Compounds ◽  
Lignin Model Compounds ◽  
Mild Conditions ◽  
Lignin Model

A novel pseudo-homogeneous catalyst system consisting of noble metal nanoparticles and ionic liquids is developed for the selective reductive cleavage of C–O and hydrodeoxygenation under mild conditions.

Capping agent-free highly dispersed noble metal nanoparticles supported in ordered mesoporous carbon with short channels and their catalytic applications

RSC Advances ◽  
2016 ◽  
Vol 6 (66) ◽  
pp. 61064-61072 ◽  
Author(s):  
Wenjun Gao ◽  
Siwen Li ◽  
Manas Pal ◽  
Yong Liu ◽  
Xiaoyue Wan ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Noble Metal ◽  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Noble Metal Nanoparticles ◽  
Capping Agent ◽  
Ordered Mesoporous ◽  
Highly Dispersed ◽  
Catalytic Applications ◽  
Short Channels

Capping agent free synthesis of noble metal nanoparticles supported on ordered mesoporous carbon with short channels.

Highly Stable Noble-Metal Nanoparticles in Tetraalkylphosphonium Ionic Liquids for in situ Catalysis

ChemSusChem ◽  
2011 ◽  
Vol 5 (1) ◽  
pp. 109-116 ◽  
Author(s):  
Abhinandan Banerjee ◽  
Robin Theron ◽  
Robert W. J. Scott
Keyword(s):  
Ionic Liquids ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Noble Metal Nanoparticles ◽  
In Situ Catalysis

Phase Transfer of Noble Metal Nanoparticles from Ionic Liquids to an Organic/Aqueous Medium

2014 ◽  
Vol 53 (41) ◽  
pp. 15909-15916 ◽  
Author(s):  
Penglei Cui ◽  
Hongyan He ◽  
Dong Chen ◽  
Hui Liu ◽  
Suojiang Zhang ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Metal Nanoparticles ◽  
Aqueous Medium ◽  
Noble Metal ◽  
Phase Transfer ◽  
Noble Metal Nanoparticles
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