Hydrogenation of hydrophobic substrates catalyzed by gold nanoparticles embedded in Tetronic/cyclodextrin-based hydrogels

2019 ◽  
Vol 43 (25) ◽  
pp. 9865-9872 ◽  
Author(s):  
M. Chevry ◽  
S. Menuel ◽  
B. Léger ◽  
S. Noël ◽  
E. Monflier ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Au Nanoparticles

Hydrogenation of alkenes, alkynes and aldehydes was investigated under biphasic conditions using Au nanoparticles (AuNP) embedded into combinations of α-cyclodextrin (α-CD) and a poloxamine (Tetronic®90R4).

The Stabilization of Supported Au Nanoparticles in a Highly Sintering Environment using High Surface Free Energy Pt and Ru Cores

2021 ◽  
Author(s):  
Kerry O-Connell ◽  
John R Monnier ◽  
John Regalbuto
Keyword(s):  
Gold Nanoparticles ◽  
Free Energy ◽  
Surface Free Energy ◽  
Au Nanoparticles ◽  
High Surface ◽  
Chemical Environment ◽  
Core Shell

In an effort to stabilize gold nanoparticles which sinter rapidly in a highly corrosive chemical environment, the hydrochlorination of acetylene, bimetallic Ru@Au and Pt@Au core-shell catalysts were prepared by anchoring...

scholarly journals Structural characterization of functionalized gold nanoparticles for drug delivery in cancer therapy: a NMR based approach

2015 ◽  
Vol 17 (29) ◽  
pp. 18971-18979 ◽  
Author(s):  
Sílvia C. Coelho ◽  
Maria Rangel ◽  
Maria C. Pereira ◽  
Manuel A. N. Coelho ◽  
Galya Ivanova
Keyword(s):  
Drug Delivery ◽  
Gold Nanoparticles ◽  
Cancer Therapy ◽  
Structural Characterization ◽  
Au Nanoparticles ◽  
Functionalized Gold Nanoparticles ◽  
Loaded Surface

Structure of Bortezomib loaded, surface functionalized Au nanoparticles.

Enhancement of efficiency in graphene/porous silicon solar cells by co-doping graphene with gold nanoparticles and bis(trifluoromethanesulfonyl)-amide

2017 ◽  
Vol 5 (35) ◽  
pp. 9005-9011 ◽  
Author(s):  
Ju Hwan Kim ◽  
Dong Hee Shin ◽  
Ha Seung Lee ◽  
Chan Wook Jang ◽  
Jong Min Kim ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Solar Cells ◽  
Porous Silicon ◽  
Au Nanoparticles ◽  
Silicon Solar Cells ◽  
Porous Si ◽  
Co Doping ◽  
Si Solar Cells ◽  
First Time

The co-doping of graphene with Au nanoparticles and bis(trifluoromethanesulfonyl)-amide is employed for the first time to enhance the performance of graphene/porous Si solar cells.

Aquatic Fern (AzollaSp.) Assisted Synthesis of Gold Nanoparticles

2016 ◽  
Vol 15 (01n02) ◽  
pp. 1650008 ◽  
Author(s):  
Anal K. Jha ◽  
K. Prasad
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Au Nanoparticles ◽  
X Ray ◽  
Aquatic Fern ◽  
Transmission Electron ◽  
Anthraquinone Glycosides ◽  
Uv Visible

Aquatic pteridophyte (Azolla sp.) was taken to assess its potential to synthesize the metal (Au) nanoparticles. The synthesized particles were characterized using X-ray, UV-visible, scanning and transmission electron microscopy analyses. Nanoparticles almost spherical in shape having the sizes of 5–17[Formula: see text]nm are found. UV-visible study revealed the surface plasmon resonance at 538[Formula: see text]nm. Responsible phytochemicals for the transformation were principally phenolics, tannins, anthraquinone glycosides and sugars present abundantly in the plant thereby bestowing it adaptive prodigality. Also, the use of Azolla sp. for the synthesis of gold nanoparticles offers the benefit of eco-friendliness.

The studies on highly concentrated complex dispersions of gold nanoparticles and temperature-sensitive nanogels and their application as new blood-vessel-embolic materials with high-resolution angiography

2014 ◽  
Vol 2 (36) ◽  
pp. 6044-6053 ◽  
Author(s):  
Yingying Ma ◽  
Jiangshan Wan ◽  
Kun Qian ◽  
Shinan Geng ◽  
Nijun He ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
High Resolution ◽  
Blood Vessel ◽  
Au Nanoparticles ◽  
Blood Pool ◽  
Temperature Sensitive ◽  
Colloid Stability ◽  
Blood Pool Imaging ◽  
Embolic Materials

High colloid stability of highly concentrated Au nanoparticles (GNPs) for use in blood-pool imaging was achieved, using p(N-isopropylacrylamide-co-butyl methylacrylate) nanogels.

Sensitive Hg2+ Ion Detection Using Metal Enhanced Fluorescence of Novel Polyvinyl Pyrrolidone (PVP)-Templated Gold Nanoparticles

2018 ◽  
Vol 72 (11) ◽  
pp. 1645-1652 ◽  
Author(s):  
Kailong Dong ◽  
Jiasheng Zhou ◽  
Taiqun Yang ◽  
Shan Dai ◽  
Hao Tan ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Detection Limit ◽  
Au Nanoparticles ◽  
Polyvinyl Pyrrolidone ◽  
Quenching Mechanism ◽  
Ion Detection ◽  
Enhanced Fluorescence ◽  
Metal Enhanced Fluorescence ◽  
One Pot ◽  
Au Nps

In this study, we report a straightforward strategy for Hg2+ ion detection. Fluorescent Au nanoparticles (NPs) were one-pot synthesized using a polymer (polyvinyl pyrrolidone [PVP]) as both capping and fluorescence agent. The as-synthesized PVP-Au NPs showed a remarkably rapid response selectively for Hg2+ ions compared to 14 other metal ions. The detection limit of Hg2+ was estimated at 100 nM. We discuss the emission and quenching mechanism of the PVP-Au NPs, the former being attributed to metal enhanced fluorescence and the latter being related to static quenching by Hg2+. The fluorescence of PVP-Au NPs offers an efficient and reliable strategy for Hg2+ ions detection. They therefore have a great potential for applications in health and environmental monitoring.

scholarly journals Thermal atomic layer deposition of gold nanoparticles: controlled growth and size selection for photocatalysis

Nanoscale ◽  
2020 ◽  
Vol 12 (16) ◽  
pp. 9005-9013 ◽  
Author(s):  
Fatemeh S. M. Hashemi ◽  
Fabio Grillo ◽  
Vikram R. Ravikumar ◽  
Dominik Benz ◽  
Ankit Shekhar ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Atomic Layer Deposition ◽  
Fluidized Bed ◽  
Au Nanoparticles ◽  
Atomic Layer ◽  
Fluidized Bed Reactor ◽  
Au Nanoparticle ◽  
Pulse Time ◽  
Layer Deposition ◽  
Selection For

Thermal atomic layer deposition of Au nanoparticles on titania in a fluidized bed reactor. Effects of precursor pulse time on Au nanoparticle size and loading.

scholarly journals Design of gold nanoparticles-decorated SiO2@TiO2 core/shell nanostructures for visible light-activated photocatalysis

RSC Advances ◽  
2017 ◽  
Vol 7 (13) ◽  
pp. 7469-7475 ◽  
Author(s):  
Ryeri Lee ◽  
Yogeenth Kumaresan ◽  
Sei Young Yoon ◽  
Soong Ho Um ◽  
Il Keun Kwon ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Titanium Dioxide ◽  
Visible Light ◽  
Silicon Dioxide ◽  
Au Nanoparticles ◽  
Core Shell ◽  
Photocatalytic Reaction ◽  
Shell Nanostructures ◽  
Visible Light Driven

In this study, we designed core/shell nanostructures (CSNs) of silicon dioxide (SiO2)/titanium dioxide (TiO2), which were decorated with gold (Au) nanoparticles (NPs), to activate the visible light-driven photocatalytic reaction.

Gold nanoparticles supported on Ce–Zr oxides for the oxidative esterification of aldehydes to esters

2015 ◽  
Vol 5 (7) ◽  
pp. 3682-3692 ◽  
Author(s):  
Yuchao Li ◽  
Lei Wang ◽  
Ruiyi Yan ◽  
Junxing Han ◽  
Suojiang Zhang
Keyword(s):  
Solid Solution ◽  
Gold Nanoparticles ◽  
Au Nanoparticles ◽  
Efficient Catalyst ◽  
Oxidative Esterification

Au nanoparticles supported on Ce0.6Zr0.4O2solid solution with high reducibility and basicity is an efficient catalyst for oxidative esterification.

scholarly journals Nucleation and growth of gold nanoparticles initiated by nanosecond and femtosecond laser irradiation of aqueous [AuCl4]−

2018 ◽  
Vol 20 (45) ◽  
pp. 28465-28475 ◽  
Author(s):  
Collin J. Rodrigues ◽  
Julian A. Bobb ◽  
Mallory G. John ◽  
Sergey P. Fisenko ◽  
M. Samy El-Shall ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Femtosecond Laser ◽  
Laser Irradiation ◽  
Surface Plasmon ◽  
Au Nanoparticles ◽  
Nucleation And Growth ◽  
Femtosecond Laser Irradiation ◽  
532 Nm ◽  
Polydisperse Particles ◽  
Autocatalytic Growth

Irradiation of aqueous [AuCl4]− with 532 nm, 8 ns pulses produces uniform 5 nm Au nanoparticles through surface plasmon-mediated photothermal autocatalytic growth, in contrast to the large polydisperse particles formed with 800 nm, 30 fs pulses.

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