La2O3/Reduced Graphene Oxide Nanocomposite: A Highly Efficient, Reusable Heterogeneous Catalyst for the Synthesis of Biologically Important Bis(indolyl)methanes Under Solvent Free Conditions

2017 ◽  
Vol 17 (4) ◽  
pp. 2508-2514 ◽  
Author(s):  
Navin Kumar Mogha ◽  
Sugat Kirti ◽  
Dhanraj T Masram
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Heterogeneous Catalyst ◽  
Solvent Free ◽  
Highly Efficient ◽  
Solvent Free Conditions ◽  
Reduced Graphene

A Greener Approach for the Chemoselective Boc Protection of Amines Using Sulfonated Reduced Graphene Oxide as a Catalyst in Metal- and Solvent-Free Conditions

Synthesis ◽  
2019 ◽  
Vol 52 (04) ◽  
pp. 591-601
Author(s):  
Rupali Mittal ◽  
Anupam Mishra ◽  
Satish K. Awasthi
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Solvent Free ◽  
Ambient Conditions ◽  
Solvent Free Conditions ◽  
Reduced Graphene

Sulfonated reduced graphene oxide (SrGO) has displayed great potential as a solid acid catalyst due to its efficiency, cost-effectiveness, and reliability. In this study, SrGO was synthesized by the introduction of sulfonic acid-containing aryl radicals onto chemically reduced graphene oxide using ultrasonication. The SrGO catalyst was characterized by Fourier Transform Infrared (FTIR) spectroscopy, Raman spectroscopy, powder X-ray diffraction (PXRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and transmission electron microscopy (TEM). Further, SrGO was effectively utilized as a metal-free and reusable solid acid catalyst for the chemoselective N-t-Boc protection of various aromatic and aliphatic amines under solvent-free conditions. The N-t-Boc protection of amines was easily achieved under ambient conditions affording high yields (84–95%) in very short reaction times (5 min–2 h). The authenticity of the approach was confirmed by a crystal structure. The catalyst could be easily recovered and was reused up to seven consecutive catalytic cycles without any substantial loss in its activity.

Co/rGO synthesized via the alcohol-thermal method as a heterogeneous catalyst for the highly efficient oxidation of ethylbenzene with oxygen

2019 ◽  
Vol 43 (21) ◽  
pp. 8189-8194 ◽  
Author(s):  
Lingfeng Gao ◽  
WenYun Zhuge ◽  
Xue Feng ◽  
Wei Sun ◽  
Xu Sun ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Heterogeneous Catalyst ◽  
Selective Oxidation ◽  
Thermal Method ◽  
Efficient Catalyst ◽  
Highly Efficient ◽  
Reduced Graphene ◽  
Oxidation Of Ethylbenzene

Co3O4 nanoparticles uniformly dispersed on reduced graphene oxide (Co/rGO) were synthesized by the alcohol-thermal method as a highly efficient catalyst with initiator NHPI for the selective oxidation of ethylbenzene to acetophenone using O2 as a green oxidant.

scholarly journals Enhanced electrochemical activities of morphologically tuned MnFe2O4 nanoneedles and nanoparticles integrated on reduced graphene oxide for highly efficient supercapacitor electrodes

2021 ◽  
Author(s):  
R Rajalakshmi ◽  
Remya K. P. ◽  
Viswanathan Chinnuswamy ◽  
Nagamony Ponpandian
Keyword(s):  
Graphene Oxide ◽  
Physicochemical Properties ◽  
Reduced Graphene Oxide ◽  
Two Dimensional ◽  
2D Material ◽  
Highly Efficient ◽  
Reduced Graphene

The morphology of a nanoparticle strongly controls the path ofelectronic interaction, which directly correlates to the physicochemical properties and also the electrochemical comportment. Conjoining it with a two-dimensional (2D) material...

Fe3O4/TiO2/reduced graphene oxide composites as highly efficient Fenton-like catalyst for the decoloration of methylene blue

2019 ◽  
Vol 223 ◽  
pp. 751-757 ◽  
Author(s):  
Chao Sun ◽  
Sheng-Tao Yang ◽  
Zhenjie Gao ◽  
Shengnan Yang ◽  
Ailimire Yilihamu ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Highly Efficient ◽  
Reduced Graphene ◽  
Oxide Composites

Tethering mesoporous Pd nanoparticles to reduced graphene oxide sheets forms highly efficient electrooxidation catalysts

2017 ◽  
Vol 5 (40) ◽  
pp. 21249-21256 ◽  
Author(s):  
Muhammad Iqbal ◽  
Cuiling Li ◽  
Bo Jiang ◽  
Md. Shahriar A. Hossain ◽  
Md. Tofazzal Islam ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Pd Nanoparticles ◽  
Solution Phase ◽  
Phase Synthesis ◽  
Highly Efficient ◽  
Reduced Graphene ◽  
Solution Phase Synthesis ◽  
Graphene Oxide Sheets

Uniformly sized mesoporous palladium (Pd) nanoparticles supported on reduced graphene oxide (rGO) surfaces can be prepared by solution phase synthesis.

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