نتایج جستجو برای: graphene based nanomaterials

تعداد نتایج: 2983188  

Chromium (Cr) and copper (Cu) are heavy metals known for their dangerous effect towards human health and could enter into human body mainly through ingestion. Over the years, different treatment methods have been used to eliminate heavy metal from raw water source and these include (co)precipitation, coagulation/flocculation, adsorption and ion- exchange. Nonetheless, adsorption is the most pro...

2015
Fei Xiao Shengxiong Yang Zheye Zhang Hongfang Liu Junwu Xiao Lian Wan Jun Luo Shuai Wang Yunqi Liu

We reported a scalable and modular method to prepare a new type of sandwich-structured graphene-based nanohybrid paper and explore its practical application as high-performance electrode in flexible supercapacitor. The freestanding and flexible graphene paper was firstly fabricated by highly reproducible printing technique and bubbling delamination method, by which the area and thickness of the...

2017
Nana Luo Jeffrey K Weber Shuang Wang Binquan Luan Hua Yue Xiaobo Xi Jing Du Zaixing Yang Wei Wei Ruhong Zhou Guanghui Ma

Engineered nanomaterials promise to transform medicine at the bio-nano interface. However, it is important to elucidate how synthetic nanomaterials interact with critical biological systems before such products can be safely utilized in humans. Past evidence suggests that polyethylene glycol-functionalized (PEGylated) nanomaterials are largely biocompatible and elicit less dramatic immune respo...

2013
Shuze Zhu Teng Li

Hydrogenation of graphene leads to local bond distortion of each hydrogenated carbon atom. Therefore, programmable hydrogenation of graphene can open up new pathways to controlling the morphology of graphene and therefore enable the exploration of graphene-based unconventional nanomaterials. Using molecular dynamics simulations, we show that single-sided hydrogenation can cause the scrolling of...

2016
Michael Maas

Carbon nanomaterials like graphene, carbon nanotubes, fullerenes and the various forms of diamond have attracted great attention for their vast potential regarding applications in electrical engineering and as biomaterials. The study of the antibacterial properties of carbon nanomaterials provides fundamental information on the possible toxicity and environmental impact of these materials. Furt...

Journal: :The Analyst 2014
Diana C Vanegas Masashige Taguchi Prachee Chaturvedi Stephanie Burrs Michael Tan Hitomi Yamaguchi Eric S McLamore

Carbon and noble metal nanomaterials exhibit unique properties that have been explored over the last few decades for developing electrochemical sensors and biosensors. Hybridization of nanometals to carbon nanomaterials such as graphene or carbon nanotubes produces a synergistic effect on the electrocatalytic activity when compared to either material alone. However, to date there are no compara...

Journal: :ACS applied materials & interfaces 2014
Jae-Hyun Lee Soon-Hyung Choi Shashikant P Patole Yamujin Jang Keun Heo Won-Jae Joo Ji-Beom Yoo Sung Woo Hwang Dongmok Whang

We synthesized thermally stable graphene-covered Ge (Ge@G) nanowires and applied them in field emission devices. Vertically aligned Ge@G nanowires were prepared by sequential growth of the Ge nanowires and graphene shells in a single chamber. As a result of the thermal treatment experiments, Ge@G nanowires were much more stable than pure Ge nanowires, maintaining their shape at high temperature...

Journal: :Chemosphere 2014
Shibin Li Xuan Pan Lindsay K Wallis Zhaoyang Fan ZuLiang Chen Stephen A Diamond

With a dramatic rise in complexity, needs of nanotoxicology research go beyond simple forms of nanomaterials. This study compared the phototoxicity of nano-TiO2 and graphene-TiO2 nanocomposite (GNP). GNP was synthesized based on a hydrothermal method, which simultaneously performed the reduction of graphene oxide and nano-TiO2 loading. A series of acute toxicity tests of nano-TiO2, graphene and...

2011
T. GOTO

The first major success of polymer nanocomposites, where the filler has at least one dimension in the nanoscale, was reported by Kojima, Usuki et al. [1] from the Toyota Central R&D group. They demonstrated that nylon6/clay nanocomposites showed significant improvement in the mechanical and the thermal properties. Since then, works on the polymer nanocomposites have been conducted on a wide var...

2012
O. O. Kit T. Tallinen L. Mahadevan J. Timonen P. Koskinen

Although carbon nanotubes consist of honeycomb carbon, they have never been fabricated from graphene directly. Here, it is shown by quantum molecular-dynamics simulations and classical continuum-elasticity modeling, that graphene nanoribbons can, indeed, be transformed into carbon nanotubes by means of twisting. The chiralities of the tubes thus fabricated can be not only predicted but also ext...

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