نتایج جستجو برای: Graphite nanosheet

تعداد نتایج: 16163  

Journal: :international journal of nano dimension 0
ahmad allahbakhsh department of polymer engineering, south tehran branch, islamic azad university, tehran, iran. farhad sharif department of polymer engineering, amirkabir university of technology, tehran, iran. saeedeh mazinani amirkabir nanotechnology research institute (antri), amirkabir university of technology, tehran, iran. m. r. kalaee 1department of polymer engineering, islamic azad university, south tehran branch, tehran, iran.

in this study, an efficient and facile technique for preparing graphene oxide in suspension and powder forms was presented based on a modification on hummers' method followed by an additional ultrasonic process. the method involved the provision of graphene oxide from graphite by reaction of potassium permanganate and sulfuric acid with stabilizing the medium complex. furthermore, this stu...

2015
Fengxian Ma Mei Zhou Yalong Jiao Guoping Gao Yuantong Gu Ante Bilic Zhongfang Chen Aijun Du

Layered graphitic materials exhibit new intriguing electronic structure and the search for new types of two-dimensional (2D) monolayer is of importance for the fabrication of next generation miniature electronic and optoelectronic devices. By means of density functional theory (DFT) computations, we investigated in detail the structural, electronic, mechanical and optical properties of the sing...

Journal: :ACS applied materials & interfaces 2010
Thiruvelu Bhuvana Anurag Kumar Aditya Sood Roger H Gerzeski Jianjun Hu Venkata Srinu Bhadram Chandrabhas Narayana Timothy S Fisher

We report a catalyst-free synthesis of cantilevered carbon nanosheet extensions, or petals, from graphite fibers by microwave plasma CVD. Results reveal that the petals grow from the fiber surface layers while preserving graphitic continuity from fiber to the petals. Subtraction of Raman signatures from pristine and decorated fibers reveals a convolution of two underlying peaks at 2687 and 2727...

2010
Burcu Saner Selmiye Alkan Gürsel Yuda Yürüm

The integration of catalyst metals into the graphene-based composites can be a new way to ensure thermal and electronic conductivities of the catalyst support materials in polymer electrolyte membrane fuel cells. In this work, graphene nanosheets were synthesized via a mild and safer chemical route including three major steps: graphite oxidation, ultrasonic treatment and chemical reduction. The...

Journal: :Physical chemistry chemical physics : PCCP 2014
Jie Han Xing Dai Yang Gao Yan Meng Zhigang Wang

Defects such as the most stable hexavacancy (V6) distribute widely on neutron-irradiated graphite surfaces, which play a dominant role in immobilizing radioactive products released from nuclear fuels. By performing DFT calculations, we explore the interaction of gaseous uranium dicarbide (UC2) molecules on a graphene nanosheet with a V6 defect, in order to investigate the behavior of the repres...

Journal: :Nanoscale 2015
Samuel J Rowley-Neale Dale A C Brownson Graham C Smith David A G Sawtell Peter J Kelly Craig E Banks

We explore the use of two-dimensional (2D) MoS2 nanosheets as an electrocatalyst for the Hydrogen Evolution Reaction (HER). Using four commonly employed commercially available carbon based electrode support materials, namely edge plane pyrolytic graphite (EPPG), glassy carbon (GC), boron-doped diamond (BDD) and screen-printed graphite electrodes (SPE), we critically evaluate the reported electr...

Journal: :Acta biomaterialia 2012
Akihiro Saito Hiromi Miyazaki Toshinori Fujie Shinya Ohtsubo Manabu Kinoshita Daizoh Saitoh Shinji Takeoka

Polymeric ultra-thin films (nanosheets) possess unique properties that make them suitable materials for various biomedical applications. In our previous study, we assessed the use of an antibiotic (tetracycline, TC)-loaded nanosheet (or "TC-nanosheet") for the treatment of gastrointestinal tissue defects. The nanosheet consisted of three functional layers: layer-by-layer nanosheet as a stable p...

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