Novel highly active and selective Fe-N-C oxygen reduction electrocatalysts derived from in-situ polymerization pyrolysis

Nano Energy ◽  
2017 ◽  
Vol 38 ◽  
pp. 201-209 ◽  
Author(s):  
Yechuan Chen ◽  
Rohan Gokhale ◽  
Alexey Serov ◽  
Kateryna Artyushkova ◽  
Plamen Atanassov
Keyword(s):  
Oxygen Reduction ◽  
In Situ Polymerization ◽  
Highly Active

Preparation of PE/GO nanocomposites using in situ polymerization over an efficient, thermally stable GO-supported V-based catalyst

RSC Advances ◽  
2016 ◽  
Vol 6 (32) ◽  
pp. 26553-26558 ◽  
Author(s):  
He-Xin Zhang ◽  
Yan-Ming Hu ◽  
Dong-Ho Lee ◽  
Keun-Byoung Yoon ◽  
Xue-Quan Zhang
Keyword(s):  
High Performance ◽  
In Situ Polymerization ◽  
Thermally Stable ◽  
Highly Active ◽  
Polymerization Method

In this research, the high performance PE/GO nanocomposites were prepared by using a highly active, thermally stable GO-supported VOCl3-based catalyst through an in situ polymerization method.

Fe–N4 engineering of S and N co-doped hierarchical porous carbon-based electrocatalysts for enhanced oxygen reduction in Zn–air batteries

2020 ◽  
Vol 49 (42) ◽  
pp. 14847-14853
Author(s):  
Jingxia Gao ◽  
Sa Liu ◽  
Ping Zhu ◽  
Xinsheng Zhao ◽  
Guoxiang Wang
Keyword(s):  
Oxygen Reduction ◽  
Porous Carbon ◽  
Hierarchical Porous Carbon ◽  
Highly Active ◽  
Hierarchical Porous ◽  
Co Doped ◽  
Carbon Based

A highly active yet stable electrocatalyst was prepared by in situ formed template-assisting method.

Study on Preparation and Characterization of Modified Montmorillonite with the Aromatic Isocyanate

2013 ◽  
Vol 662 ◽  
pp. 297-300
Author(s):  
Xiao Hua Gu ◽  
Xi Wei Zhang ◽  
Jia Liang Zhou ◽  
Bao Yun Xu
Keyword(s):  
Smart Materials ◽  
In Situ Polymerization ◽  
Heat Stability ◽  
X Ray Diffraction ◽  
Modified Polymer ◽  
Highly Active ◽  
Detection Analysis ◽  
Ft Ir

In this article, the methylene diphenyl isocyanate (MDI) containing two benzene rings was used to modify montmorillonite. The detection analysis of the original MMT and the samples after modification were investigated by infrared spectroscopy (FT-IR), x-ray diffraction (XRD) and thermo gravimetry (TG). Analysis of detection results shows that MDI and the surface of montmorillonite form chemical bonds and the spacing of montmorillonite layer increases from 1.24 nm to 1.86 nm. It provides highly active terminal isocyanate groups in situ polymerization for the montmorillonite and smart materials. It will improve the compatibility of the MMT and polymer, and allows the montmorillonite have always been able to maintain a good dispersion in polymer. Meanwhile the diphenyl isocyanate into ring can improve the heat stability of montmorillonite-modified polymer.

PE/clay nanocomposites produced via in situ polymerization by highly active clay-supported Ziegler–Natta catalyst

2012 ◽  
Vol 70 (4) ◽  
pp. 1313-1325 ◽  
Author(s):  
Sadegh Abedi ◽  
Majid Abdouss ◽  
Mehdi Nekoomanesh-Haghighi ◽  
Naser Sharifi-Sanjani
Keyword(s):  
In Situ Polymerization ◽  
Clay Nanocomposites ◽  
Highly Active ◽  
Natta Catalyst ◽  
Ziegler Natta Catalyst ◽  
Active Clay

scholarly journals Thermal and Mechanical Properties of Polyethylene/Doped-TiO2Nanocomposites Synthesized Using In Situ Polymerization

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
S. H. Abdul Kaleel ◽  
Bijal Kottukkal Bahuleyan ◽  
J. Masihullah ◽  
Mamdouh Al-Harthi
Keyword(s):  
Mechanical Properties ◽  
In Situ Polymerization ◽  
Filler Concentration ◽  
Thermal And Mechanical Properties ◽  
Scanning Calorimetry ◽  
Polyethylene Matrix ◽  
Highly Active ◽  
Nanoparticles Dispersion ◽  
Temperature And Pressure

Ethylene polymerization was carried out using highly active metallocene catalysts (Cp2ZrCl2and Cp2TiCl2) in combination with methylaluminoxane. Titanium (IV) oxide containing 1% Mn as dopant was used as nanofillers. The effects of filler concentration, reaction temperature, and pressure on the thermal and mechanical properties of polymer were analyzed. The improvement of nanoparticles dispersion in the polyethylene matrix was checked by WAXD. The thermal properties were analyzed using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The filler impact on the melting temperature of polyethylene synthesized using Cp2ZrCl2was very minimal which is due to the degree of short-chain branching. The ash content was also analyzed for each nanocomposite and found to be in line with the activity of the catalyst. There was a significant increase in the mechanical properties of the polyethylene by addition of filler.

In situ growth of cobalt sulfide hollow nanospheres embedded in nitrogen and sulfur co-doped graphene nanoholes as a highly active electrocatalyst for oxygen reduction and evolution

2017 ◽  
Vol 5 (24) ◽  
pp. 12354-12360 ◽  
Author(s):  
Xiaochang Qiao ◽  
Jutao Jin ◽  
Hongbo Fan ◽  
Yingwei Li ◽  
Shijun Liao
Keyword(s):  
Oxygen Reduction ◽  
Cobalt Sulfide ◽  
In Situ Growth ◽  
Hollow Nanospheres ◽  
Highly Efficient ◽  
Highly Active ◽  
Doped Graphene ◽  
Co Doped

A highly efficient bifunctional oxygen electrocatalyst was grown by embedding cobalt sulfide hollow nanospheres in nitrogen and sulfur co-doped graphene nanoholes.

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