Controlled deposition of Pt nanoparticles on Fe3O4@carbon microspheres for efficient oxidation of 5-hydroxymethylfurfural

RSC Advances ◽  
2016 ◽  
Vol 6 (56) ◽  
pp. 51229-51237 ◽  
Author(s):  
Yuwei Zhang ◽  
Zhimin Xue ◽  
Jinfang Wang ◽  
Xinhui Zhao ◽  
Yonghui Deng ◽  
...  
Keyword(s):  
Pt Nanoparticles ◽  
Core Shell ◽  
Carbon Microspheres ◽  
Spherical Morphology ◽  
Recyclable Catalysts ◽  
Controlled Deposition

We report core/shell structured magnetically recyclable catalysts with a well-defined spherical morphology. Using these as catalysts for the oxidation of HMF, a 100% yield of FDCA could be achieved in just 4 h at 90 °C in water .

scholarly journals Synthesis of Fe3O4/Pt Nanoparticles Decorated Carbon Nanotubes and Their Use as Magnetically Recyclable Catalysts

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Hongkun He ◽  
Chao Gao
Keyword(s):  
Carbon Nanotubes ◽  
Pt Nanoparticles ◽  
Reduction Reaction ◽  
Raw Material ◽  
Synthesis Process ◽  
High Catalytic Activity ◽  
Hydrolysis Method ◽  
Recyclable Catalysts ◽  
Temperature Solution ◽  
Average Size

We report a facile approach to prepare Fe3O4/Pt nanoparticles decorated carbon nanotubes (CNTs). The superparamagnetic Fe3O4nanoparticles with average size of4∼5 nm were loaded on the surfaces of carboxyl groups functionalized CNTs via a high-temperature solution-phase hydrolysis method from the raw material of FeCl3. The synthesis process of magnetic CNTs is green and readily scalable. The loading amounts of Fe3O4nanopartilces and the magnetizations of the resulting magnetic CNTs show good tunability. The Pt nanopaticles with average size of 2.5 nm were deposited on the magnetic CNTs through a solution-based method. It is demonstrated that the Fe3O4/Pt nanoparticles decorated CNTs have high catalytic activity in the reduction reaction of 4-nitrophenol and can be readily recycled by a magnet and reused in the next reactions with high efficiencies for at least fifteen successive cycles. The novel CNTs-supported magnetically recyclable catalysts are promising in heterogeneous catalysis applications.

Controllable fabrication of a N and B co-doped carbon shell on the surface of TiO2 as a support for boosting the electrochemical performances

2017 ◽  
Vol 5 (4) ◽  
pp. 1672-1678 ◽  
Author(s):  
Ying Chang ◽  
Conghui Yuan ◽  
Yuntong Li ◽  
Cheng Liu ◽  
Tong Wu ◽  
...  
Keyword(s):  
Shell Thickness ◽  
Pt Nanoparticles ◽  
Carbon Shell ◽  
Core Shell ◽  
Electrochemical Performances ◽  
Carbon Core ◽  
Controllable Fabrication ◽  
Co Doped

Pt nanoparticles loaded on TiO2@N,B co-doped carbon core–shell supports with tunable shell thickness possess enhanced electrochemical performances.

Colorimetric assay for the simultaneous detection of Hg2+ and Ag+ based on inhibiting the peroxidase-like activity of core–shell Au@Pt nanoparticles

2017 ◽  
Vol 9 (30) ◽  
pp. 4363-4370 ◽  
Author(s):  
Chi-Fang Peng ◽  
Ying-Ying Zhang ◽  
Li-Ying Wang ◽  
Zheng-Yu Jin ◽  
Guang Shao
Keyword(s):  
Colorimetric Assay ◽  
Simultaneous Detection ◽  
Pt Nanoparticles ◽  
Core Shell ◽  
Highly Sensitive

A highly sensitive and selective colorimetric assay for Hg2+ and Ag+ was developed using core–shell Au@Pt nanoparticles.

Carbon–boron core–shell microspheres for the oxygen reduction reaction

2016 ◽  
Vol 4 (33) ◽  
pp. 12987-12994 ◽  
Author(s):  
Arun Prakash Periasamy ◽  
Rini Ravindranath ◽  
Prathik Roy ◽  
Wen-Ping Wu ◽  
Huan-Tsung Chang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
High Activity ◽  
Carbon Nanomaterials ◽  
Reduction Reaction ◽  
Core Shell ◽  
Carbon Microspheres ◽  
Self Assembled

Carbon nanomaterials (CNMs) with self-assembled carbon microspheres are prepared from red onion skins. The CNMs are further used to prepare carbon–boron core–shell CNMs, which provide high activity for the oxygen reduction reaction (ORR).

Tuning core–shell interactions in tungsten carbide–Pt nanoparticles for the hydrogen evolution reaction

2018 ◽  
Vol 20 (36) ◽  
pp. 23262-23271 ◽  
Author(s):  
Akash Jain ◽  
Ashwin Ramasubramaniam
Keyword(s):  
Tungsten Carbide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Pt Nanoparticles ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Titanium Doping ◽  
The Stability

Titanium doping enhances the stability and activity of tungsten carbide core–platinum shell nanoparticles for hydrogen evolution

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