scholarly journals Towards the continuous production of Pt-based heterogeneous catalysts using microfluidic systems

2018 ◽  
Vol 47 (5) ◽  
pp. 1693-1702 ◽  
Author(s):  
Uson Laura ◽  
Manuel Arruebo ◽  
Victor Sebastian
Keyword(s):  
Catalytic Activity ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Heterogeneous Catalysts ◽  
Continuous Production ◽  
Noble Metal Nanoparticles ◽  
Microfluidic Systems ◽  
Voc Abatement

The continuous production of Pt-based heterogeneous catalysts based on ultra-small (<2 nm) noble metal nanoparticles deposited on mesoporous ordered silica and their catalytic activity in VOC abatement are here reported. Commercially available micromixers can be easily interfaced to create a multistage platform which allows the growth of metal noble NPs as well as their alloys.

Enhanced Catalytic Activity of Magnetic Bimetallic Ag–Au Nanoparticles Mediated by Surface Plasmon Resonance

2021 ◽  
Vol 21 (5) ◽  
pp. 3107-3114
Author(s):  
Zhuo-Rui Li ◽  
Geng Zhu ◽  
Guo-Zhi Han
Keyword(s):  
Catalytic Activity ◽  
Surface Plasmon Resonance ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Au Nanoparticles ◽  
Catalytic Performance ◽  
Reduction Reaction ◽  
Noble Metal Nanoparticles

We firstly discover the enhanced catalytic activity of magnetic noble metal nanoparticles mediated by surface plasmon resonance. Under light irradiation with certain wavelength, the catalytic performance of magnetic noble metal nanoparticles shows changes with different degrees and directions that are associated with the surface plasmon resonance (SPR) of the noble metal. Moreover, the coupling of silver and gold allows the catalytic performance of magnetic bimetallic Ag–Au nanoparticles to show more positive response to surface plasmon resonance. The magnetic bimetallic Ag–Au nanoparticles show excellent catalytic performance toward the reduction reaction of aromatic nitro group, and corresponding rate constant of the catalytic reduction reaction increases about three times with light irradiation.

Catalytic activity of polypyrrole nanotubes decorated with noble-metal nanoparticles and their conversion to carbonized analogues

2016 ◽  
Vol 214 ◽  
pp. 14-22 ◽  
Author(s):  
Irina Sapurina ◽  
Jaroslav Stejskal ◽  
Ivana Šeděnková ◽  
Miroslava Trchová ◽  
Jana Kovářová ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Noble Metal Nanoparticles ◽  
Polypyrrole Nanotubes

Core@shell sub-ten-nanometer noble metal nanoparticles with a controllable thin Pt shell and their catalytic activity towards oxygen reduction

Nano Research ◽  
2014 ◽  
Vol 8 (1) ◽  
pp. 271-280 ◽  
Author(s):  
Ntirikwendera Deogratias ◽  
Muwei Ji ◽  
Yong Zhang ◽  
Jiajia Liu ◽  
Jiatao Zhang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Nanoparticles ◽  
Oxygen Reduction ◽  
Noble Metal ◽  
Noble Metal Nanoparticles ◽  
Core Shell

scholarly journals Hairy silica nanosphere supported metal nanoparticles for reductive degradation of dye pollutants

2021 ◽  
Author(s):  
Xin Chen ◽  
Li Zhang ◽  
Bin Xu ◽  
Tingting Chen ◽  
Lianhong Hu ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Noble Metal ◽  
Heterogeneous Catalysts ◽  
Noble Metal Nanoparticles ◽  
Silica Support ◽  
Dye Pollutants ◽  
Reductive Degradation ◽  
Highly Dispersed ◽  
Supported Metal Nanoparticles ◽  
Silica Nanosphere

Highly dispersed and tiny-sized noble metal nanoparticles are deposited on a hairy poly(4-vinylpyridine)-silica support, which can serve as recyclable heterogeneous catalysts in the reductive degradation of 4-NP and RhB dye pollutants.

scholarly journals The Isocyanurate-Carbamate-Bridged Hybrid Mesoporous Organosilica: An Exceptional Anchor for Pd Nanoparticles and a Unique Catalyst for Nitroaromatics Reduction

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 621
Author(s):  
Ali Zebardasti ◽  
Mohammad G. Dekamin ◽  
Esmail Doustkhah
Keyword(s):  
Mesoporous Silica ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Room Temperature ◽  
Heterogeneous Catalysts ◽  
Pd Nanoparticles ◽  
Noble Metal Nanoparticles ◽  
Green Catalyst ◽  
Mesoporous Organosilica ◽  
Mesoporous Organosilicas

Hybridisation of mesoporous organosilicas (MO) to reinforce the surface capability in adsorption and stabilisation of noble metal nanoparticles is of great attention in generating/supporting noble metal within their matrices and transforming them into efficient heterogeneous catalysts. Here, we used a unique hybrid of organic-inorganic mesoporous silica in which pore profile pattern was similar to the well-known mesoporous silica, SBA-15 for catalysis. This hybrid mesoporous organosilica was further engaged as a support in the synthesis and stabilisation of Pd nanoparticles on its surface, and then, the obtained Pd-supported MO was employed as a heterogeneous green catalyst in the conversion of aqueous p-nitrophenol (PNP) to p-aminophenol (PAP) at room temperature with efficient recyclability.

2D ultrathin surfactant-encapsulating polyoxometalate assemblies as carriers for monodispersing noble-metal nanoparticles with high catalytic activity and stability

2021 ◽  
Author(s):  
Yang-Guang Li ◽  
Xing-Yu Ji ◽  
Feiyang Yu ◽  
Yingqi Li ◽  
Hao-Tian Zhu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Nanoparticles ◽  
Uniform Distribution ◽  
Noble Metal ◽  
Environmental Governance ◽  
Noble Metal Nanoparticles ◽  
High Catalytic Activity ◽  
Binding Force ◽  
Strong Binding

Noble-metal nanoparticles (NMNPs) with excellent catalytic activity and stability play an important role in the field of environmental governance. Uniform distribution and strong binding force with carriers of noble-metal nanoparticles...

scholarly journals Catalytic activity of the noble metal nanoparticles

2020 ◽  
Author(s):  
Libor KVÍTEK ◽  
Tomáš STRYŠOVSKÝ ◽  
Martina KUBÍKOVÁ ◽  
Miroslav ORSÁG ◽  
Aleš PANÁČEK ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Noble Metal Nanoparticles
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