scholarly journals Synthesis of magnetic core-shell Fe3O4@SiO2@Mg(OH)2 composite using waste bischofite and its catalytic performance for ozonation of antibiotics

2020 ◽  
Vol 8 (5) ◽  
pp. 104318 ◽  
Author(s):  
Jun Wu ◽  
Qi Sun ◽  
Jian Lu
Keyword(s):  
Catalytic Performance ◽  
Magnetic Core ◽  
Core Shell

scholarly journals Catalytic Performance of a Magnetic Core-Shell Iron(II) C-Scorpionate under Unconventional Oxidation Conditions

Nanomaterials ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2111
Author(s):  
Inês A. S. Matias ◽  
Ana P. C. Ribeiro ◽  
Ana M. Ferraria ◽  
Ana M. Botelho do Rego ◽  
Luísa M. D. R. S. Martins
Keyword(s):  
Alternative Energy ◽  
Alcohol Oxidation ◽  
Catalytic Performance ◽  
Magnetic Core ◽  
Core Shell ◽  
Secondary Alcohols ◽  
Alternative Energy Sources ◽  
Metallic Complex ◽  
Shell Particles ◽  
First Time

For the first time, herein is reported the use of a magnetic core-shell support for a C-scorpionate metallic complex. The prepared hybrid material, that consists on the C-scorpionate iron(II) complex [FeCl2{κ3-HC(pz)3}] (pz, pyrazolyl) immobilized at magnetic core-shell particles (Fe3O4/TiO2), was tested as catalyst for the oxidation of secondary alcohols using the model substrate 1-phenylethanol. Moreover, the application of alternative energy sources (e.g., ultrasounds, microwaves, mechanical or thermal) for the peroxidative alcohol oxidation using the magnetic heterogenized iron(II) scorpionate led to different/unusual outcomes that are presented and discussed.

Hierarchical hollow nanostructured core@shell recyclable catalysts γ-Fe2O3@LDH@Au25-x for highly efficient alcohol oxidation

2016 ◽  
Vol 18 (21) ◽  
pp. 5900-5914 ◽  
Author(s):  
Shuangtao Yin ◽  
Jin Li ◽  
Hui Zhang
Keyword(s):  
Molecular Oxygen ◽  
Aerobic Oxidation ◽  
Alcohol Oxidation ◽  
Catalytic Performance ◽  
Magnetic Core ◽  
Core Shell ◽  
Precursor Method ◽  
Highly Efficient ◽  
Recyclable Catalysts

Magnetically recyclable 3D hierarchical hollow nanostructured Au25 nanocluster catalysts, assembled by an Au25Capt18 precursor method, exhibit an extraordinary catalytic performance for the aerobic oxidation of alcohol by molecular oxygen upon strong Au25NCs–LDH–magnetic core synergy.

Supported polymer magnets with high catalytic performance in the green reduction of nitroaromatic compounds

RSC Advances ◽  
2016 ◽  
Vol 6 (37) ◽  
pp. 31514-31525 ◽  
Author(s):  
J. Safari ◽  
S. Gandomi-Ravandi ◽  
Z. Haghighi
Keyword(s):  
Solid Phase ◽  
Catalytic Performance ◽  
Magnetic Core ◽  
Nitroaromatic Compounds ◽  
Core Shell ◽  
As Solid Phase

We exhibit the synthesis of magnetic core–shell nanocomposites as solid phase catalysts in the reduction of nitroaromatics.

Superior co-catalysis by bimetallic nanostructure for TiO2 photocatalysis

2020 ◽  
Vol 01 ◽  
Author(s):  
Bonamali Pal ◽  
Anila Monga ◽  
Aadil Bathla
Keyword(s):  
Visible Light ◽  
Catalytic Performance ◽  
Transition Metal Catalysts ◽  
Core Shell ◽  
Structural Morphology ◽  
Tio2 Photocatalysis ◽  
Co Catalysts ◽  
Bimetallic Nanocomposites ◽  
Bimetallic Nanostructure ◽  
Bimetallic Nanostructures

Background:: Bimetallic nanocomposites have currently gained significant importance for enhanced catalytic applications relative to monometallic analogues. The synergistic interactions modified electronic and optical properties in the bimetallic (M1@M2) structural morphology e.g., core-shell /alloy nanostructures resulted in a better co-catalytic performance for TiO2 photocatalysis. Objective:: Hence, this article discusses the preparation, characterization, and co-catalytic activity of different bimetallic nanostructures namely, Cu@Zn, Pd@Au, Au@Ag, and Ag@Cu, etc. Method:: These bimetallic co-catalysts deposited on TiO2 possess the ability to absorb visible light due to surface plasmonic absorption and are also expected to display the new properties due to synergy between two distinct metals. As a result, they reveal the highest level of activity than the monometal deposited TiO2. Result:: Their optical absorption, emission, charge carrier dynamics, and surface structural morphology are explained for the improved photocatalytic activity of M1@M2 loaded TiO2 for the hydrogenation of certain organic compounds e.g., quinoline, crotonaldehyde, and 1,3-dinitrobenzene, etc. under UV/ visible light irradiation. Conclusion:: It revealed that the use of bimetallic core@shell co-catalyst for hydrogenation of important industrial organics by M1@M2-TiO2 nanocomposite demonstrates beneficial reactivity in many instances relative to conventional transition metal catalysts.

PtPd nanoframes derived from Pd@PdPt core–shell rhombic dodecahedrals with excellent catalytic performance toward methanol oxidation

2021 ◽  
Author(s):  
Yangyang Ren ◽  
Chuanliang Li ◽  
Baosong Li ◽  
Fan Gao ◽  
Xinghua Zhang ◽  
...  
Keyword(s):  
Methanol Oxidation ◽  
Catalytic Properties ◽  
Catalytic Performance ◽  
Core Shell ◽  
Acid Environment ◽  
Excellent Catalytic Performance

PtPd nanoframes with excellent catalytic properties were obtained by etching Pd@PdPt core–shell RDs with Fe3+ in an acid environment.

scholarly journals Fabrication of copper(II)-coated magnetic core-shell nanoparticles Fe3O4@SiO2-2-aminobenzohydrazide and investigation of its catalytic application in the synthesis of 1,2,3-triazole compounds

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
H. Rajabi-Moghaddam ◽  
M. R. Naimi-Jamal ◽  
M. Tajbakhsh
Keyword(s):  
High Efficiency ◽  
Click Reaction ◽  
Magnetic Core ◽  
Core Shell ◽  
Isatoic Anhydride ◽  
Shell Nanoparticles ◽  
Triazole Derivatives ◽  
Catalytic Application ◽  
Ft Ir ◽  
Core Shell Nanoparticles

AbstractIn the present work, an attempt has been made to synthesize the 1,2,3-triazole derivatives resulting from the click reaction, in a mild and green environment using the new copper(II)-coated magnetic core–shell nanoparticles Fe3O4@SiO2 modified by isatoic anhydride. The structure of the catalyst has been determined by XRD, FE-SEM, TGA, VSM, EDS, and FT-IR analyzes. The high efficiency and the ability to be recovered and reused for at least up to 6 consecutive runs are some superior properties of the catalyst.

Sign in / Sign up

Export Citation Format

Share Document