نتایج جستجو برای: nano graphene

تعداد نتایج: 99336  

Journal: :Chinese Physics 2022

Diamond/graphene composite three-dimensional electrode has attracted extensive attention because of its low background current, wide potential window from diamond component, and high electrochemical activity graphite component. In this work, by using the hot wire chemical vapor deposition method, nano diamonds are embedded in vertical graphene sheet on surface single particle layer regulating s...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مراغه - دانشکده علوم پایه 1393

در این کار، ما کاتالیست pt-sn/graphene را برای اکسیداسیون اتانول در محیط اسیدی، گزارش کرده ایم. گرافن، با استفاده از محلول مایع یونی و لایه برداری الکتروشیمیایی الکترودهای گرافیت سنتز شد. سپس کاتالیست های pt-sn بر پایه گرافن به وسیله اتیلن گلیکول، که به عنوان عامل تثبیت کننده استفاده می شود، احیا شدند تا نانو ذرات ptsn با پخش شدگی بالا بر روی صفحات گرافن تهیه شوند و در اکسیداسیون اتانول در پیل ...

2014
Hua-jun Chen Ka-Di Zhu

Graphene has received significant attention due to its excellent properties currently. In this work, a nano-optomechanical system based on a doubly-clamped Z-shaped graphene nanoribbon (GNR) with an optical pump-probe scheme is proposed. We theoretically demonstrate the phenomenon of phonon-induced transparency and show an optical transistor in the system. In addition, the significantly enhance...

2017

Extending the concept of synthesizing 2 d polymer sheets has been explored in this mini review to highlight about the future potentials inherent with this important class of engineered materials. The discovery of graphene (i.e. mechanically and chemically robust highly crystalline nano sheets with extremely high charge carrier mobility) not only dispelled the thermodynamic instability of 2D mat...

Journal: :Journal of the American Chemical Society 2015
Chenliang Su Rika Tandiana Janardhan Balapanuru Wei Tang Kapil Pareek Chang Tai Nai Tamio Hayashi Kian Ping Loh

Porous graphene oxide can be used as a metal-free catalyst in the presence of air for oxidative coupling of primary amines. Herein, we explore a GO-catalyzed carbon-carbon or/and carbon-heteroatom bond formation strategy to functionalize primary amines in tandem to produce a series of valuable products, i.e., α-aminophosphonates, α-aminonitriles, and polycyclic heterocompounds. Furthermore, whe...

Journal: :Dalton transactions 2015
Abhijit Dey Sayali Hadavale Md Abdul Shafeeuulla Khan Priyesh More Pawan K Khanna Arun Kanti Sikder Santanu Chattopadhyay

UNLABELLED An ecofriendly procedure for the synthesis of graphene-titanium dioxide nanocomposites (GTNC) has been developed by dispersing nano-titanium dioxide (TiO2) and graphene nanosheets (GNSs) in ethanol via ultrasonication followed by microwave irradiation. Such nanohybrids were characterized by X-Ray Diffraction (XRD), High Resolution Transmission Electron Microscopy (HRTEM), Fourier Tra...

2014
M. C. Wang Z. B. Lai L. M. Zhou D. Galpaya C. Yan N. Hu

Articles you may be interested in Broadband saturable absorption and optical limiting in graphene-polymer composites Appl. Microwave and mechanical properties of quartz/graphene-based polymer nanocomposites Appl. Enhanced dielectric properties of BaTiO3/poly(vinylidene fluoride) nanocomposites for energy storage applications J. The importance of bendability in the percolation behavior of carbon...

Journal: :Molecules 2018
Mosadegh Keshavarz Amanollah Zarei Ahmady Luigi Vaccaro Maryam Kardani

A superparamagnetic graphene oxide/Fe₃O₄/l-proline nano hybrid that was obtained from the non-covalent immobilization of l-proline on graphene oxide/Fe₃O₄ nanocomposite was used as a new magnetically separable catalyst for the efficient synthesis of 4,4'-(arylmethylene)bis(1H-pyrazol-5-ol) derivatives. The prepared heterogeneous catalyst was characterized using FTIR, TGA, DTG, XRD, TEM, SEM, an...

2016
Bingbing Yuan Haixiang Sun Tao Wang Yanyan Xu Peng Li Ying Kong Q. Jason Niu

Nanopore containing graphene nanosheets were synthesized by graphene oxide and a reducing agent using a facile hydrothermal treatment in sodium hydroxide media. The as-prepared nanoporous graphene was incorporated into ethyl cellulose (EC) to prepare the mixed matrix membranes (MMMs) for C3H6/C3H8 separation. Transmission electron microscopy (TEM) photograph and X-ray photoelectron spectroscopy...

2016
Ding-Bang Xiong Mu Cao Qiang Guo Zhanqiu Tan Genlian Fan Zhiqiang Li Di Zhang

By using CuO/graphene-oxide/CuO sandwich-like nanosheets as the building blocks, bulk nacre-inspired copper matrix nano-laminated composite reinforced by molecular-level dispersed and ordered reduced graphene oxide (rGO) with content as high as ∼45 vol% was fabricated via a combined process of assembly, reduction and consolidation. Thanks to nanoconfinement effect, reinforcing effect, as well a...

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