نتایج جستجو برای: graphene sheets

تعداد نتایج: 73442  

Journal: :Chemical communications 2011
Cunlan Guo Brittany Book-Newell Joseph Irudayaraj

We demonstrate a facile, one-step, protein-directed approach to preparing a new functional reduced graphene oxide via simultaneous reduction and surface functionalization of graphene oxide sheets with herceptin and show its potential application as a novel biological imaging agent.

Journal: :Journal of the American Chemical Society 2011
Justin Wu Liming Xie Yanguang Li Hailiang Wang Yijian Ouyang Jing Guo Hongjie Dai

We investigated the chlorine plasma reaction with graphene and graphene nanoribbons and compared it with the hydrogen and fluorine plasma reactions. Unlike the rapid destruction of graphene by hydrogen and fluorine plasmas, much slower reaction kinetics between the chlorine plasma and graphene were observed, allowing for controlled chlorination. Electrical measurements on graphene sheets, graph...

Morphology and size of platinum nanoparticles are a crucial factor in improving their catalytic activity and stability. Here, we firstly report the synthesis of high loading Pt nanoparticles on polydopamine reduced Graphene. The loading concentration of Pt (nanoparticles) NPs on Graphene can be adjusted in the range of 60-70%.With the insertion of polydopamine between Graphene oxide sheets, sta...

Journal: :Nanoscale 2014
Mao-Sung Wu Yan-Hao Fu

Expanded mesocarbon microbeads (EMCMBs) with graphene oxide (GO) sheets were prepared by expanding graphitized mesocarbon microbeads (MCMBs) using a simple solution-based oxidative process. EMCMB-supported nickel nanoparticles with an average size of 4.6 nm were fabricated by an electrophoretic deposition (EPD) method in the presence of nickel nitrate additive. Nickel ions were self-assembled o...

2011
Yue Chan James M Hill

In this article, we investigate the storage of lithium ions between two parallel graphene sheets using the continuous approximation and the 6-12 Lennard-Jones potential. The continuous approximation assumes that the carbon atoms can be replaced by a uniform distribution across the surface of the graphene sheets so that the total interaction potential can be approximated by performing surface in...

2006

Carbon Nanotubes (CNTs) are believed to be the ultimate nanomaterial, due to their exceptional thermal conductivity, electronic properties, and mechanical strength. Discovered by Iijima Sukumo, an electron microscopist from the NEC laboratory in Japan in 1991, they have been capturing the imagination of physicists as well as chemists for the last thirteen years. They are the fifth existing form...

Journal: :Chemical communications 2015
Xiaohui Lv Wei Lv Wei Wei Xiaoyu Zheng Chen Zhang Linjie Zhi Quan-Hong Yang

A hybrid of holey graphene and Mn3O4 is prepared by a one-step process, in which the formation of a holey structure is accompanied with Mn3O4 nanoparticles through a high temperature reaction between graphene oxide sheets and KMnO4. Holey graphene and Mn3O4 collaboratively attributed to the enhanced catalytic activity and efficiency towards the oxygen reduction reaction.

Journal: :Chemical communications 2015
G Neri A Scala F Barreca E Fazio P G Mineo A Mazzaglia G Grassi A Piperno

A reactive azlactone-based graphene nanoplatform was successfully synthesized by the ligation of azido-azlactone with alkyne-terminated graphene via Cu(I)-catalyzed cycloaddition. The reactive azlactone rings, grafted on graphene sheets, were subjected to highly efficient ring-opening reactions with functionalized primary amine derivatives incorporating an aminosilane coupling agent or a biolog...

Journal: :Chemical communications 2010
Fei Liu Jong Young Choi Tae Seok Seo

Water dispersible single- and bilayered graphene sheets are produced by a direct exfoliation from graphite flakes in the presence of pyrene-labeled single stranded DNAs, and the immobilized DNA on the graphene surface is further hybridized with a gold nanoparticle labeled complementary DNA to generate gold nanoparticle-graphene nanocomposites.

Journal: :Chemical communications 2015
Fei Zheng Wei-Long Xu Han-Dong Jin Meng-Qi Zhu Wei-Hao Yuan Xiao-Tao Hao Kenneth P Ghiggino

It is demonstrated that oxidative debris can be separated and largely removed during the surfactant assisted phase transfer of graphene oxide from a water/ethanol mixture to dichlorobenzene. The new procedure described provides a facile method to obtain monolayer dispersed graphene sheets in a nonpolar solvent via solvothermal reduction of graphene oxide accompanied by an effective purification...

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