Do polymer ligands block the catalysis of metal nanoparticles? Unexpected importance of binding motifs in improving catalytic activity

2020 ◽  
Vol 8 (31) ◽  
pp. 15900-15908 ◽  
Author(s):  
Lei Zhang ◽  
Zichao Wei ◽  
Michael Meng ◽  
Gaël Ung ◽  
Jie He
Keyword(s):  
Catalytic Activity ◽  
Metal Nanoparticles ◽  
Binding Motifs ◽  
Polymer Ligands

Polymer NHC ligands enhance the catalytic activity of metal nanoparticles despite the increase of surface crowdedness.

A facile approach to fabricate halloysite/metal nanocomposites with preformed and in situ synthesized metal nanoparticles: a comparative study of their enhanced catalytic activity

2015 ◽  
Vol 44 (19) ◽  
pp. 8906-8916 ◽  
Author(s):  
Sankar Das ◽  
Subhra Jana
Keyword(s):  
Catalytic Activity ◽  
Comparative Study ◽  
Metal Nanoparticles ◽  
Heterogeneous Catalysts ◽  
Cost Effective ◽  
Environmentally Benign ◽  
Metal Nanocomposites

Halloysite/metal nanocomposites have been synthesized through the immobilization of preformed and in situ synthesized metal nanoparticles over halloysite surfaces, which in turn produce efficient, cost-effective, and environmentally benign heterogeneous catalysts.

scholarly journals Quasi-MOF: Exposing Inorganic Nodes to Guest Metal Nanoparticles for Drastically Enhanced Catalytic Activity

Chem ◽  
2018 ◽  
Vol 4 (4) ◽  
pp. 845-856 ◽  
Author(s):  
Nobuko Tsumori ◽  
Liyu Chen ◽  
Qiuju Wang ◽  
Qi-Long Zhu ◽  
Mitsunori Kitta ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Nanoparticles

In situ synthesis and catalytic activity in CO oxidation of metal nanoparticles supported on porous nanocrystalline silicon

2010 ◽  
Vol 36 (22) ◽  
pp. 63-70
Author(s):  
Sergej Polisski ◽  
Bernhard Goller ◽  
Karen Wilson ◽  
Dmitry Kovalev ◽  
Vladimir Zaikowskii ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Metal Nanoparticles ◽  
Nanocrystalline Silicon ◽  
In Situ Synthesis

scholarly journals Metal Nanoparticles as Green Catalysts

Materials ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 3602 ◽  
Author(s):  
Neel Narayan ◽  
Ashokkumar Meiyazhagan ◽  
Robert Vajtai
Keyword(s):  
Catalytic Activity ◽  
Composite Materials ◽  
Green Synthesis ◽  
Metal Nanoparticles ◽  
Surface Area ◽  
Significant Role ◽  
High Surface ◽  
High Surface Area ◽  
Catalytic Performance ◽  
Materials Development

Nanoparticles play a significant role in various fields ranging from electronics to composite materials development. Among them, metal nanoparticles have attracted much attention in recent decades due to their high surface area, selectivity, tunable morphologies, and remarkable catalytic activity. In this review, we discuss various possibilities for the synthesis of different metal nanoparticles; specifically, we address some of the green synthesis approaches. In the second part of the paper, we review the catalytic performance of the most commonly used metal nanoparticles and we explore a few roadblocks to the commercialization of the developed metal nanoparticles as efficient catalysts.

Catalytic Activity and Poisoning of Specific Sites on Supported Metal Nanoparticles

2002 ◽  
Vol 41 (14) ◽  
pp. 2532-2535 ◽  
Author(s):  
Swetlana Schauermann ◽  
Jens Hoffmann ◽  
Viktor Johánek ◽  
Jens Hartmann ◽  
Jörg Libuda ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Nanoparticles ◽  
Supported Metal Nanoparticles ◽  
Supported Metal

Thermosensitive Core-Shell Microgel as a “Nanoreactor” for Metal Nanoparticles

2009 ◽  
Vol 1234 ◽  
Author(s):  
Yan Lu ◽  
Matthias Ballauff
Keyword(s):  
Catalytic Activity ◽  
Metal Nanoparticles ◽  
Room Temperature ◽  
Catalytic Reduction ◽  
Core Shell ◽  
Carrier System ◽  
Volume Transition ◽  
Oxidation Of Alcohols ◽  
Influence Of Temperature On ◽  
Metal Nanocomposites

AbstractIn our study, thermosensitive core-shell microgel particles have been used as the carrier system for the deposition of metal nanoparticles, in which the core consists of polystyrene (PS) whereas the shell consists of poly(N-isopropylacrylamide) (PNIPA) network crosslinked by N, N'-methylenebisacrylamide (BIS). Silver, gold and palladium nanoparticles have been homogeneously embedded into thermosensitive PNIPA-networks, respectively. We demonstrate that the catalytic activity of the microgel-metal nanocomposites can be tuned by the volume transition within the microgel of these systems by using the catalytic reduction of 4-nitrophenol as the model reaction. Moreover, following the concept of a “green chemistry”, the oxidation of alcohols to the corresponding aldehydes or ketones can be carried out in aqueous solution under aerobic conditions at room temperature by using microgel-metal nanocomposites as the catalyst. The influence of temperature on the catalytic activity has been also investigated, which will be affected both by the volume transition of the microgel and by the change of polarity of the microgel in this case.

Sign in / Sign up

Export Citation Format

Share Document