نتایج جستجو برای: graphene oxide nanoparticles

تعداد نتایج: 307014  

2016
Rafael Torres-Mendieta David Ventura-Espinosa Sara Sabater Jesus Lancis Gladys Mínguez-Vega Jose A. Mata

The demand for nanocomposites of graphene and carbonaceous materials decorated with metallic nanoparticles is increasing on account of their applications in science and technology. Traditionally, the production of graphene-metal assemblies is achieved by the non-environmentally friendly reduction of metallic salts in carbonaceous suspensions. However, precursor residues during nanoparticle grow...

2016
Rebeca Ortega-Amaya Yasuhiro Matsumoto Andrés M Espinoza-Rivas Manuel A Pérez-Guzmán Mauricio Ortega-López

This work describes the formation of reduced graphene oxide-coated copper oxide and copper nanoparticles (rGO-Cu2ONPs, rGO-CuNPs) on the surface of a copper foil supporting graphene oxide (GO) at annealing temperatures of 200-1000 °C, under an Ar atmosphere. These hybrid nanostructures were developed from bare copper oxide nanoparticles which grew at an annealing temperature of 80 °C under nitr...

2014
Tao Xian Hua Yang Lijing Di Jinyuan Ma Haimin Zhang Jianfeng Dai

UNLABELLED SrTiO3-graphene nanocomposites were prepared via photocatalytic reduction of graphene oxide by UV light-irradiated SrTiO3 nanoparticles. Fourier transformed infrared spectroscopy analysis indicates that graphene oxide is reduced into graphene. Transmission electron microscope observation shows that SrTiO3 nanoparticles are well assembled onto graphene sheets. The photocatalytic activ...

Journal: :applied biotechnology reports 0
khadijeh eskandari nanobiotechnology research center, baqiyatallah university of medical science, tehran, iran sharareh sajjadi department of biology, faculty of science, roudehen branch, islamic azad university, roudehen, iran amir-homayon keihan nanobiotechnology research center, baqiyatallah university of medical science, tehran, iran mehdi kamali nanobiotechnology research center, baqiyatallah university of medical science, tehran, iran jamal rashidiani nanobiotechnology research center, baqiyatallah university of medical science, tehran, iran zahra safiri nanobiotechnology research center, baqiyatallah university of medical science, tehran, iran

direct electron transferring of glucose oxidase was investigated   on reduced graphene and graphene oxide templates. the direct electrochemistry   glucose oxidase on   graphene showed a cyclic voltammograms corresponding to the fad/fadh 2   redox couple with an anodic, cathodic and formal potential of -430, -460 and   -445 mv, respectively in 0.1 m phosphate buffer solution and air saturated   ...

2012
Yue Yu Yingzhi Li Yunxiang Pan Chang-jun Liu

Pd nanoparticles were fabricated on graphene oxide (GO) using a deposition-precipitation method with a glow discharge plasma reduction at room temperature. Argon was employed as the plasma-generating gas. The novel plasma method selectively reduces the metal ions. The graphene oxide has no change with this plasma reduction according to the Fourier transform infrared analysis. The Pd nanoparticl...

Background and Aim: Fluoride is one of the essential elements of water that is introduced into water sources through several natural and human activities. Maximum contaminant level for fluoride in drinking water is set at 1.5 mg/L by WHO. In the present research, defluorination of aqueous solutions using graphene oxide nanoparticles is discussed. Materials and Methods: In the present study, ...

Journal: :Nanoscale 2013
Ji-Young Kim Kwang-Heon Kim Seung-Beom Yoon Hyun-Kyung Kim Sang-Hoon Park Kwang-Bum Kim

An in situ chemical synthesis approach has been developed to prepare ruthenium oxide/reduced graphene oxide (RGO) nanocomposites. It is found that as the C/O ratio increases, the number density of RuO2 nanoparticles decreases, because the chemical interaction between the Ru ions and the oxygen-containing functional groups provides anchoring sites where the nucleation of particles takes place. F...

Journal: :Nanoscale 2013
Hao Liu Kwang-Leong Choy Martin Roe

A process involving the filtration of graphene oxide (GO) dispersion through an alumina membrane, followed by oxygen annealing to synthesize alumina nanoparticles exclusively at the edges of holes or vacancies in the reduced graphene oxide (rGO) plane, is used to prepare paper-like composites with a 21% enhanced electrical conductivity. Moreover, the rGO/alumina nanocomposites have a smaller ba...

Journal: :Nanoscale 2011
Humera Jabeen Vimlesh Chandra Sehoon Jung Jung Woo Lee Kwang S Kim Seung Bin Kim

Nanoscale iron particles decorated graphene sheets synthesized via sodium borohydride reduction of graphene oxide, showed enhanced magnetic property, surface area and Cr(vi) adsorption capacity compared to bare iron nanoparticles.

Journal: :Chemical communications 2011
Yuhua Xue Hao Chen Dingshan Yu Shuangyin Wang Michal Yardeni Quanbin Dai Mingming Guo Yong Liu Fan Lu Jia Qu Liming Dai

Fe(2+) cations in FeCl(2) or FeSO(4) were oxidized by graphene oxide, leading to an in situ deposition of Fe(3)O(4) nanoparticles onto the self-reduced graphene oxide (rGO) sheets. The resultant Fe(3)O(4)/rGO sheets were demonstrated to possess interesting magnetic and electrochemical properties attractive for a large variety of potential applications.

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید