The key role of support surface tuning during the preparation of catalysts from reverse micellar-synthesized metal nanoparticles

2007 ◽  
Vol 8 (10) ◽  
pp. 1479-1486 ◽  
Author(s):  
Agustín Martínez ◽  
Gonzalo Prieto
Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 929
Author(s):  
Hanadi Sawalha ◽  
Rambod Abiri ◽  
Ruzana Sanusi ◽  
Noor Azmi Shaharuddin ◽  
Aida Atiqah Mohd Noor ◽  
...  

Nanotechnology is a promising tool that has opened the doors of improvement to the quality of human’s lives through its potential in numerous technological aspects. Green chemistry of nanoscale materials (1–100 nm) is as an effective and sustainable strategy to manufacture homogeneous nanoparticles (NPs) with unique properties, thus making the synthesis of green NPs, especially metal nanoparticles (MNPs), the scientist’s core theme. Researchers have tested different organisms to manufacture MNPs and the results of experiments confirmed that plants tend to be the ideal candidate amongst all entities and are suitable to synthesize a wide variety of MNPs. Natural and cultivated Eucalyptus forests are among woody plants used for landscape beautification and as forest products. The present review has been written to reflect the efficacious role of Eucalyptus in the synthesis of MNPs. To better understand this, the route of extracting MNPs from plants, in general, and Eucalyptus, in particular, are discussed. Furthermore, the crucial factors influencing the process of MNP synthesis from Eucalyptus as well as their characterization and recent applications are highlighted. Information gathered in this review is useful to build a basis for new prospective research ideas on how to exploit this woody species in the production of MNPs. Nevertheless, there is a necessity to feed the scientific field with further investigations on wider applications of Eucalyptus-derived MNPs.


Author(s):  
Anand S Burange ◽  
Awais Ahmad ◽  
Rafael Luque

Efforts to bridge the gap between homogeneous and heterogeneous catalysis include the use of surface organometallic chemistry, single atom catalysis and monodispersed metal nanoparticles, among others. In case of metal...


Author(s):  
LATIF MS ◽  
ABBAS S ◽  
KORMIN F ◽  
MUSTAFA MK

The use of metal nanoparticles (MNPs) in various fields is increasing day-by-day leading to a genuine concern about the issues related to their environmental and biological safety. The major approaches for the synthesis of NPs include physical and chemical methods which are expensive and hazardous to health in addition to being toxic to the environment. This review highlights the potential of plant extracts to carry out the synthesis of MNPs with a special emphasis on the role of flavonoids in nanosynthesis. This green and clean approach have been actively utilized in recent years as an alternative to conventional hazardous approaches. It has proved as cost-effective, non-toxic, less time and labor consuming, efficient, and eco-friendly method for the synthesis of MNPs with specific biological actions. This review also focuses on the role of polyphenols, including the flavonoids as bioreductants of metal salts for the synthesis of NPs along with their biomedical applications. Various examples of the MNPs, along with their biological actions, have also been summarized.


2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Cesare Chiccoli ◽  
Paolo Pasini ◽  
Claudio Zannoni ◽  
Gregor Skačej ◽  
Hiroyuki Yoshida ◽  
...  

AbstractWe have studied nematic hybrid films with homeotropic alignment at the top surface and various controlled degrees of in plane ordering, going from a random degenerate organization to a completely uniform alignment along one direction, at the bottom one. We show, by Monte Carlo (MC) computer simulations and experiments on photopatterned films with the bottom support surface fabricated with in-plane order similar to the simulated ones, that the point defects observed in the case of random planar orientations at the bottom tend to arrange along a filament as the surface ordering is sufficiently increased. MC simulations complement the polarized microscopy texture observations allowing to inspect the 3D structure of the defects and examine the role of elastic constants.


2016 ◽  
Vol 40 (2) ◽  
pp. 1420-1429 ◽  
Author(s):  
Jelver Alexander Sierra ◽  
Caio Raphael Vanoni ◽  
Milton André Tumelero ◽  
Cristiani Campos Plá Cid ◽  
Ricardo Faccio ◽  
...  

Experimental and theoretical data support the easy reduction of Au3+ into self-stabilized nanoparticles by citrus flavonoids.


2015 ◽  
Vol 50 (18) ◽  
pp. 6087-6095 ◽  
Author(s):  
Meenakshi Choudhary ◽  
Samarjeet Singh Siwal ◽  
Abu Taher ◽  
Kaushik Mallick

2016 ◽  
Vol 72 (13) ◽  
pp. 11-20 ◽  
Author(s):  
J. F. Parker ◽  
J. M. Wallace ◽  
N. L. Brandell ◽  
D. R. Rolison

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