scholarly journals Design and Exploration of Catalytic Activity of Two-Dimensional Surface-Engineered Graphene Oxide Nanosheets in the Transannulation of N-Heterocyclic Aldehydes or Ketones with Alkylamines

ACS Omega ◽  
2019 ◽  
Vol 4 (2) ◽  
pp. 3146-3158
Author(s):  
Rakesh K. Sharma ◽  
Aditi Sharma ◽  
Shivani Sharma ◽  
Sriparna Dutta ◽  
Sneha Yadav ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Two Dimensional ◽  
Graphene Oxide Nanosheets ◽  
Heterocyclic Aldehydes ◽  
Dimensional Surface

Hybrid two-dimensional nickel oxide-reduced graphene oxide nanosheets for supercapacitor electrodes

2021 ◽  
Vol 164 ◽  
pp. 105979
Author(s):  
Xin Gao ◽  
Hengwei Zhang ◽  
Erjun Guo ◽  
Fei Yao ◽  
Zengze Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Nickel Oxide ◽  
Reduced Graphene Oxide ◽  
Two Dimensional ◽  
Graphene Oxide Nanosheets ◽  
Reduced Graphene

Versatile Graphene Oxide Nanosheets via Covalent Functionalization and Their Applications

2021 ◽  
Author(s):  
Minju Park ◽  
Namhee Kim ◽  
Jiyoung Lee ◽  
Minsu Gu ◽  
Byeong-Su Kim
Keyword(s):  
Graphene Oxide ◽  
Two Dimensional ◽  
Graphene Oxide Nanosheets ◽  
Covalent Functionalization ◽  
Graphene Derivatives

Even though many graphene derivatives that are atomically thin two-dimensional structures, such as graphene oxide (GO), have triggered enormous interest in the scientific and industrial communities owing to their easy...

scholarly journals Magnetization of graphene oxide nanosheets using nickel magnetic nanoparticles as a novel support for the fabrication of copper as a practical, selective, and reusable nanocatalyst in C–C and C–O coupling reactions

RSC Advances ◽  
2021 ◽  
Vol 11 (42) ◽  
pp. 25867-25879
Author(s):  
Parisa Moradi ◽  
Maryam Hajjami
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Magnetic Nanoparticles ◽  
Coupling Reactions ◽  
Graphene Oxide Nanosheets ◽  
Magnetic Graphene Oxide ◽  
Diaryl Ethers ◽  
Magnetic Graphene

Catalytic activity of supported copper on magnetic graphene oxide was investigated as a selective and reusable nanocatalyst in the synthesis of diaryl ethers and biphenyls.

Two-Dimensional Black Phosphorus and Graphene Oxide Nanosheets Synergistically Enhance Cell Proliferation and Osteogenesis on 3D Printed Scaffolds

2019 ◽  
Vol 11 (26) ◽  
pp. 23558-23572 ◽  
Author(s):  
Xifeng Liu ◽  
A. Lee Miller ◽  
Sungjo Park ◽  
Matthew N. George ◽  
Brian E. Waletzki ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Graphene Oxide ◽  
Black Phosphorus ◽  
Two Dimensional ◽  
Graphene Oxide Nanosheets ◽  
3D Printed

Tailored multifunctional micellar brushes via crystallization-driven growth from a surface

Science ◽  
2019 ◽  
Vol 366 (6469) ◽  
pp. 1095-1098 ◽  
Author(s):  
Jiandong Cai ◽  
Chen Li ◽  
Na Kong ◽  
Yi Lu ◽  
Geyu Lin ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Graphene Oxide ◽  
Surface Functionalization ◽  
Two Dimensional ◽  
Graphene Oxide Nanosheets ◽  
Seeded Growth ◽  
Material Surfaces ◽  
Oil In Water ◽  
Two Dimensional Materials ◽  
Antibacterial Surface

The creation of nanostructures with precise chemistries on material surfaces is of importance in a wide variety of areas such as lithography, superhydrophobicity, and cell adhesion. We describe a platform for surface functionalization that involves the fabrication of cylindrical micellar brushes on a silicon wafer through seeded growth of crystallizable block copolymers at the termini of immobilized, surface-confined crystallite seeds. The density, length, and coronal chemistry of the micellar brushes can be precisely tuned, and post-growth decoration with nanoparticles enables applications in catalysis and antibacterial surface modification. The micellar brushes can also be grown on ultrathin two-dimensional materials such as graphene oxide nanosheets and further assembled into a membrane for the separation of oil-in-water emulsions and gold nanoparticles.

Enhanced electrocatalytic activity of cobalt phthalocyanines when “clicked” to graphene oxide nanosheets

2019 ◽  
Vol 23 (07n08) ◽  
pp. 828-840 ◽  
Author(s):  
Lekhetho S. Mpeta ◽  
Tebello Nyokong
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Benzene Ring ◽  
Electrocatalytic Activity ◽  
Electrochemical Sensors ◽  
Limit Of Detection ◽  
Oxidation Potential ◽  
Graphene Oxide Nanosheets ◽  
Ring Complex ◽  
Good Catalytic Activity

Alkyne-terminated Co phthalocyanine (CoPc) derivatives are linked to reduced graphene oxide nanosheets (GONS) via click chemistry and the conjugates are used for the electrocatalytic oxidation of 2-mercaptoethanol. CoPc derivatives where the alkyne group is separated from the Pc ring by an aliphatic and benzene ring (complex 3) showed the best catalytic activity (in terms of oxidation potential) in comparison to when only aliphatic chains were employed without the benzene ring (complex 2) and when there were no substituents (complex 1). The anodic oxidation of 2-mercaptoethanol on 3-GONS (linked) occurred at the least positive oxidation potential (-0.22 V vs. Ag|AgCl). 3-GONS (linked) was found to have the highest sensitivity with the lowest limit of detection of 0.08 [Formula: see text]M. When the CoPc derivative and GONS were not linked but placed sequentially on the electrode, the electrocatalytic activity (in terms of LOD) was poorer than when linked. The electrodes modified with CoPc clicked to GONS are highly promising electrochemical sensors in terms of stability, sensitivity, good catalytic activity and ease of fabrication.

Preparation of PdxAuy bimetallic nanostructures with controllable morphologies supported on reduced graphene oxide nanosheets and wrapped in a polypyrrole layer

RSC Advances ◽  
2015 ◽  
Vol 5 (107) ◽  
pp. 87831-87837 ◽  
Author(s):  
Tongjie Yao ◽  
Quan Zuo ◽  
Hao Wang ◽  
Jie Wu ◽  
Xiao Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Reduced Graphene Oxide ◽  
Graphene Oxide Nanosheets ◽  
Step Method ◽  
Reduced Graphene ◽  
One Step ◽  
Good Catalytic Activity ◽  
Alloy Nanostructures ◽  
Bimetallic Nanostructures

A one-step method to prepare reduced graphene oxide/PdxAuy/polypyrrole composites with good catalytic activity was introduced. The morphologies of alloy nanostructures could turn to be spherical, coral-like and porous cluster-like.

Ultrasmall Ru2P nanoparticles on graphene: a highly efficient hydrogen evolution reaction electrocatalyst in both acidic and alkaline media

2018 ◽  
Vol 54 (27) ◽  
pp. 3343-3346 ◽  
Author(s):  
Tingting Liu ◽  
Shuo Wang ◽  
Qiuju Zhang ◽  
Liang Chen ◽  
Weihua Hu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Reduced Graphene Oxide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Alkaline Media ◽  
Graphene Oxide Nanosheets ◽  
Reduced Graphene ◽  
Alkaline Conditions ◽  
Acidic And Alkaline Media

A Pt-free catalyst of ultrasmall Ru2P nanoparticles on reduced graphene oxide nanosheets (Ru2P/RGO-20) shows remarkable HER catalytic activity under acidic and alkaline conditions, respectively, both superior to those of commercial Pt/C.

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