Aqueous route to facile, efficient and functional silica coating of metal nanoparticles at room temperature

Nanoscale ◽  
2014 ◽  
Vol 6 (19) ◽  
pp. 11273-11281 ◽  
Author(s):  
Kwok Wei Shah ◽  
Thammanoon Sreethawong ◽  
Shu-Hua Liu ◽  
Shuang-Yuan Zhang ◽  
Li Sirh Tan ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Room Temperature ◽  
Silica Coating

Highly Controlled Silica Coating of PEG-Capped Metal Nanoparticles and Preparation of SERS-Encoded Particles†

Langmuir ◽  
2009 ◽  
Vol 25 (24) ◽  
pp. 13894-13899 ◽  
Author(s):  
Cristina Fernández-López ◽  
Cintia Mateo-Mateo ◽  
Ramón A. Álvarez-Puebla ◽  
Jorge Pérez-Juste ◽  
Isabel Pastoriza-Santos ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Silica Coating ◽  
Encoded Particles

Water-based synthesis of gold and silver nanoparticles with cuboidal and spherical shapes using luteolin tetraphosphate at room temperature

2018 ◽  
Vol 5 (4) ◽  
pp. 917-932 ◽  
Author(s):  
Francis J. Osonga ◽  
Phuong Le ◽  
David Luther ◽  
Laura Sakhaee ◽  
Omowunmi A. Sadik
Keyword(s):  
Silver Nanoparticles ◽  
Metal Nanoparticles ◽  
Room Temperature ◽  
Synthetic Methods ◽  
Gold And Silver Nanoparticles ◽  
Water Based

The demand for eco-friendly synthetic methods of metal nanoparticles is on the rise.

Large-scale synthesis of graphene by the reduction of graphene oxide at room temperature using metal nanoparticles as catalyst

Carbon ◽  
2013 ◽  
Vol 52 ◽  
pp. 559-564 ◽  
Author(s):  
Qiqi Zhuo ◽  
Jing Gao ◽  
Mingfa Peng ◽  
Lili Bai ◽  
Jiujun Deng ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Metal Nanoparticles ◽  
Large Scale ◽  
Room Temperature ◽  
Large Scale Synthesis

In situ growth of metal nanoparticles on boron nitride nanosheets as highly efficient catalysts

2016 ◽  
Vol 4 (48) ◽  
pp. 19107-19115 ◽  
Author(s):  
Li Fu ◽  
Guoxin Chen ◽  
Nan Jiang ◽  
Jinhong Yu ◽  
Cheng-Te Lin ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Metal Nanoparticles ◽  
Room Temperature ◽  
Reducing Agent ◽  
Metal Nanoparticle ◽  
In Situ Growth ◽  
Boron Nitride Nanosheets ◽  
Highly Efficient ◽  
Boron Nitride Nanosheet

We report a facile and general approach for the synthesis of boron nitride nanosheet (BNNS)–metal nanoparticle (NP) composites at room temperature without adding any reducing agent.

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.

Stable Fe nanomagnets encapsulated inside vertically-aligned carbon nanotubes

2017 ◽  
Vol 19 (47) ◽  
pp. 32079-32085
Author(s):  
Federica Bondino ◽  
Elena Magnano ◽  
Regina Ciancio ◽  
Carla Castellarin Cudia ◽  
Alessandro Barla ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Metal Nanoparticles ◽  
High Stability ◽  
Room Temperature ◽  
P Element ◽  
Vertically Aligned Carbon Nanotubes ◽  
Iron Metal ◽  
Aligned Carbon Nanotubes ◽  
Magnetic Remanence ◽  
Vertically Aligned

Element-specific and surface-sensitive measurements provide evidence of magnetic remanence up to room temperature, low coercivity and high stability of 5–10 nm iron metal nanoparticles encapsulated inside the tip of vertically-aligned mm-long carbon nanotubes.

scholarly journals A New in-situ Exsolution Supporting Framework for Metal Nanoparticle Growth

2021 ◽  
Author(s):  
Mengchu Wang ◽  
Bike Zhang ◽  
Jiaqi Ding ◽  
Fanxing Zhang ◽  
Rui Tu ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
High Stability ◽  
Room Temperature ◽  
Design Principle ◽  
Metal Nanoparticle ◽  
Uniform Size ◽  
Faradaic Efficiency ◽  
Nanoparticle Growth ◽  
Catalytic Materials

Abstract Catalysts made of in-situ exsolved metal nanoparticles often demonstrate promising activity and high stability in many applications. However, the design of these catalysts is greatly constrained by the classic exsolution mechanism, which occurs almost exclusively through substitutional metal-doping in perovskites. Here we show that metal nanoparticles can also be in-situ exsolved from interstitially doped metal cations in a NiOOH supporting framework with the guidance of theoretical calculation. The exsolution can be conducted swiftly at room temperature. A novel copper nanocatalyst prepared with this approach have a quasi-uniform size of 4 nm delivering an exceptional CO faradaic efficiency of 95.6% with a notable durability for the electrochemical reduction of CO2. This design principle is further proven to be generally applicable to other metals and foregrounded for guiding the development of advanced catalytic materials.

Highly efficient visible-light-driven catalytic hydrogen evolution from ammonia borane using non-precious metal nanoparticles supported by graphitic carbon nitride

2017 ◽  
Vol 5 (5) ◽  
pp. 2288-2296 ◽  
Author(s):  
Hao Zhang ◽  
Xiaojun Gu ◽  
Penglong Liu ◽  
Jin Song ◽  
Jia Cheng ◽  
...  
Keyword(s):  
Visible Light ◽  
Metal Nanoparticles ◽  
Hydrogen Evolution ◽  
Electron Density ◽  
Precious Metal ◽  
Carbon Nitride ◽  
Room Temperature ◽  
Visible Light Driven ◽  
Catalytic Hydrogen ◽  
Catalytic Hydrogen Evolution

Through enriching the electron density of metal nanoparticles, the non-precious catalysts exhibited ultra-high visible-light-driven activities in room-temperature hydrogen evolution from NH3BH3.

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