Self-assembled calixarene aligned patterning of noble metal nanoparticles on graphene

Nanoscale ◽  
2014 ◽  
Vol 6 (9) ◽  
pp. 4517-4520 ◽  
Author(s):  
Xianjue Chen ◽  
Kasturi Vimalanathan ◽  
Wenzhe Zang ◽  
Ashley D. Slattery ◽  
Ramiz A. Boulos ◽  
...  
Keyword(s):  
Metal Ions ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Phosphonic Acid ◽  
Hydrogen Gas ◽  
Noble Metal Nanoparticles ◽  
Self Assembled

Patterns of noble metal nanoparticles (NMNPs) of ruthenium and platinum are formed on p-phosphonic acid calix[8]arene stabilized graphene in water with hydrogen gas induced reduction of the metal ions.

scholarly journals Frontispiece: Alloying Behavior of Self-Assembled Noble Metal Nanoparticles

2016 ◽  
Vol 22 (38) ◽  
Author(s):  
Laura Kühn ◽  
Anne-Kristin Herrmann ◽  
Bogdan Rutkowski ◽  
Mehtap Oezaslan ◽  
Maarten Nachtegaal ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Noble Metal ◽  
Noble Metal Nanoparticles ◽  
Self Assembled

Self-Assembled Exopolysaccharide Nanoparticles for Bioremediation and Green Synthesis of Noble Metal Nanoparticles

2017 ◽  
Vol 9 (27) ◽  
pp. 22808-22818 ◽  
Author(s):  
Chengcheng Li ◽  
Le Zhou ◽  
Hang Yang ◽  
Roujing Lv ◽  
Peilong Tian ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Noble Metal Nanoparticles ◽  
Self Assembled

Synthesis and characterization of bimetallic noble metal nanoparticles for biomedical applications

MRS Advances ◽  
2016 ◽  
Vol 1 (11) ◽  
pp. 681-691 ◽  
Author(s):  
Prem C. Pandey ◽  
Govind Pandey
Keyword(s):  
Metal Ions ◽  
Prussian Blue ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Time Course ◽  
Bimetallic Nanoparticles ◽  
Reducing Agents ◽  
Noble Metal Nanoparticles ◽  
Ambient Conditions ◽  
Peroxidase Mimetic

ABSTRACTWe report herein a facile approach to synthesize processable bimetallic nanoparticles (Pd-Au/AuPd/Ag-Au/Au-Ag) decorated Prussian blue nanocomposite (PB-AgNP). The presence of cyclohexanone/formaldehyde facilitates the formation of functional bimetallic nanoparticles from 3-aminopropyltrimethoxysilane (3-APTMS) capped desired ratio of hetero noble metal ions. The use of 3-APTMS and cyclohexanone also enables the synthesis of polycrystalline Prussian blue nanoparticles (PBNPs). As synthesized PBNPs, Pd-Au/Au-Pd/Ag-Au/Au-Ag enable the formation of nano-structured composites displaying better catalytic activity than that recorded with natural enzyme. The nanomaterials have been characterized by Uv-Vis, FT-IR and Transmission Electron Microscopy (TEM) with following major findings: (1) 3-APTMS capped noble metal ions in the presence of suitable organic reducing agents i.e.; 3 glycidoxypropyltrimethoxysilane (GPTMS), cyclohexanone and formaldehyde; are converted into respective nanoparticles under ambient conditions, (2) the time course of synthesis and dispersibility of the nanoparticles are found as a function of organic reducing agents, (3) the use of formaldehyde and cyclohexanone in place of GPTMS with 3-APTMS outclasses the other two in imparting better stability of amphiphilic nanoparticles with reduced silanol content, (4) simultaneous synthesis of bimetallic nanoparticles under desired ratio of palladium/gold and silver/ gold cations are recorded, (5) the nanoparticles made from the use of 3-APTMS and cyclohexanone enable the formation of homogeneous nanocomposite with PBNP as peroxidase mimetic representing potential substitute of peroxidase enzyme. The peroxidase mimetic ability has been found to vary as a function of 3-APTMS concentration revealing the potential role of functional metal nanoparticles in bioanalytical applications.

One-Step Fabrication of Self-Assembled Peptide Thin Films with Highly Dispersed Noble Metal Nanoparticles

Langmuir ◽  
2013 ◽  
Vol 29 (52) ◽  
pp. 16051-16057 ◽  
Author(s):  
Jinmao Yan ◽  
Yunxiang Pan ◽  
Andrew G. Cheetham ◽  
Yi-An Lin ◽  
Wei Wang ◽  
...  
Keyword(s):  
Thin Films ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Noble Metal Nanoparticles ◽  
Highly Dispersed ◽  
One Step ◽  
Self Assembled

Alloying Behavior of Self-Assembled Noble Metal Nanoparticles

2016 ◽  
Vol 22 (38) ◽  
pp. 13446-13450 ◽  
Author(s):  
Laura Kühn ◽  
Anne-Kristin Herrmann ◽  
Bogdan Rutkowski ◽  
Mehtap Oezaslan ◽  
Maarten Nachtegaal ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Noble Metal ◽  
Noble Metal Nanoparticles ◽  
Self Assembled

Role of organic functionalities linked to alkoxysilane precursors in nanomaterials synthesis and their biomedical applications

2015 ◽  
Vol 1719 ◽  
Author(s):  
P. C. Pandey ◽  
Govind Pandey
Keyword(s):  
Salt Tolerance ◽  
Metal Ions ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Biomedical Applications ◽  
Ph Sensitivity ◽  
Noble Metal Nanoparticles ◽  
Biological Interactions ◽  
Wide Range

ABSTRACTThe synthesis of biocompatible noble metal nanoparticles dispersible in a wide range of biological media with control of polycrystalinity and nanogeometry, pH sensitivity and salt tolerance has been a challenging requirements. The role of 3-aminopropyltrimethoxysilane (3-APTMS) and organic reducing reagents for real time synthesis of amphilic noble metal nanoparticles meeting these requirements are demonstrated justifying the following; (1) 3-APTMS capped noble metal ions are converted into respective metal nanoparticles in the presence of one of organic reducing agents i.e., cyclohexanone, tetrahydrofuran hydroperoxide (THF-HPO), formaldehyde, acetaldehyde, acetone, t-buty dimethyl keotone, 3-Glycidoxy-propyltrimethoxysilane (3-GPTMS); (2) 3-APTMS acts as micelle, promotes the interaction of metal ions with organic reducing agent, precisely controls the size of metal nanoparticles, pH sensititvity and salt tolerance and also provides a suitable medium for nanoparticles suspension, (3) the use of suitable organic reagent precisely controls the polarity of as made noble metal nanoparticles allowing specific biological interactions, and (4) 3-APTMS significantly increases the stability and controls the pH sensitivity and salt tolerance of metal nanoparticles. The as synthesized nanomaterials show potential viability in biomedical applications from many angles i.e. (a) as potential bioelectrocatalyst, (b) selective interaction with active proteins and cellular components, and (c) peroxidase mimetic.

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