Removal of Trace Arsenite through Simultaneous Photocatalytic Oxidation and Adsorption by Magnetic Fe3O4@PpPDA@TiO2 Core–Shell Nanoparticles

2020 ◽  
Vol 3 (8) ◽  
pp. 8495-8504 ◽  
Author(s):  
Yuan Wang ◽  
Yan Zhang ◽  
Tian C. Zhang ◽  
Gang Xiang ◽  
Xinlong Wang ◽  
...  
Keyword(s):  
Photocatalytic Oxidation ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles ◽  
Magnetic Fe3o4

scholarly journals Physico-chemical characteristics, biocompatibility, and MRI applicability of novel monodisperse PEG-modified magnetic Fe3O4&SiO2 core–shell nanoparticles

RSC Advances ◽  
2017 ◽  
Vol 7 (15) ◽  
pp. 8786-8797 ◽  
Author(s):  
Uliana Kostiv ◽  
Vitalii Patsula ◽  
Miroslav Šlouf ◽  
Igor M. Pongrac ◽  
Siniša Škokić ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Chemical Characteristics ◽  
Core Shell ◽  
Resonance Imaging ◽  
Shell Nanoparticles ◽  
Physico Chemical ◽  
Magnetic Resonance Imaging Mri ◽  
Core Shell Nanoparticles ◽  
Magnetic Fe3o4

Biocompatible monodisperse PEG-modified magnetic Fe3O4&SiO2 core–shell nanoparticles with controlled size provided sufficient contrast for magnetic resonance imaging (MRI).

Surface Plasmon Resonant Gold-Palladium Bimetallic Nanoparticles for Promoting Catalytic Oxidation

MRS Advances ◽  
2019 ◽  
Vol 4 (33-34) ◽  
pp. 1877-1886 ◽  
Author(s):  
Jonathan Boltersdorf ◽  
Asher C. Leff ◽  
Gregory T. Forcherio ◽  
Joshua P. McClure ◽  
Cynthia A. Lundgren
Keyword(s):  
Surface Plasmon ◽  
Photocatalytic Oxidation ◽  
Bimetallic Nanoparticles ◽  
Bond Cleavage ◽  
Pd Nanoparticles ◽  
Localized Surface Plasmon ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Gaseous Products ◽  
Core Shell Nanoparticles

AbstractColloidal gold-palladium (Au-Pd) bimetallic nanoparticles were used as catalysts to study the ethanol (EtOH) photo-oxidation cycle, with an emphasis towards driving carbon-carbon (C-C) bond cleavage at low temperatures. Au-Pd bimetallic alloy and core-shell nanoparticles were prepared to synergistically couple a plasmonic absorber (Au) with a catalytic metal (Pd) with composite optical and catalytic properties tailored towards promoting photocatalytic oxidation. Catalysts utilizing metals that exhibit localized surface plasmon resonance (SPR) can be harnessed for light-driven enhancement for small molecule oxidation via augmented photocarrier generation/separation and photothermal conversion. The coupling of Au to Pd in an alloy or core-shell nanostructure maintains SPR-induced charge separation, mitigates the poisoning effects on Pd, and allows for improved EtOH oxidation. The Au-Pd nanoparticles were coupled to semiconducting titanium dioxide photocatalysts to probe their effects on plasmonically-assisted photocatalytic oxidation of EtOH. Complete oxidation of EtOH to CO2 under solar simulated-light irradiation was confirmed by monitoring the yield of gaseous products. Bimetallics provide a pathway for driving desired photocatalytic and photoelectrochemical reactions with superior catalytic activity and selectivity.

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