نتایج جستجو برای: graphene oxide with covalently linkedporphyrin go

تعداد نتایج: 9324057  

2017
Kang Huang Gongping Liu Wanqin Jin

As a well-known one-atom thick nanosheets with preeminent physicochemical properties, graphene and its derivatives (e.g., graphene oxide, GO) have shown great potential on the membrane separation filed. This paper presents an update of GO laminates developments, including the membrane preparation methods, physicochemical properties and water vapor transport of GO laminates, and their applicatio...

2014
Josiah T. Reams Andrew J. Guenthner Kevin R. Lamison Gregory R. Yandek David D. Swanson Joseph M. Mabry

We report the thermal, mechanical, and diffusion properties of bisphenol E based polycyanurate nanocomposites with three forms of graphene derived from sequential processing of the same carbon nanostructure. Edgefunctionalized graphene nanoplatelets (GNP) were converted to graphene oxide (GO), then heated to produce thermally reduced graphene oxide (TRGO). All three reinforcements were individu...

2018
Qiqi Zhuo Jijun Tang Jun Sun Chao Yan

To develop a green and efficient method to synthesize graphene in relative milder conditions is prerequisite for graphene applications. A chemical reducing method has been developed to high efficiently reduce graphene oxide (GO) using Fe₂O₃ and NH₃BH₃ as catalyst and reductants, respectively. During the process, environmental and strong reductive nascent hydrogen were generated surrounding the ...

Journal: :ACS applied materials & interfaces 2014
Zhiyuan Xu Song Wang Yongjun Li Mingwei Wang Ping Shi Xiaoyu Huang

Graphene oxide (GO), a novel 2D nanomaterial prepared by the oxidation of natural graphite, has been paid much attention in the area of drug delivery due to good biocompatibility and low toxicity. In the present work, 6-armed poly(ethylene glycol) was covalently introduced into the surface of GO sheets via a facile amidation process under mild conditions, making the modified GO, GO-PEG (PEG: 65...

Journal: :Physical chemistry chemical physics : PCCP 2013
Feng Gong Xin Xu Gang Zhou Zhong-Sheng Wang

In this work, reduced graphene oxide (RGO) sheets are successfully introduced into the conductive polypyrrole (PPy) matrix as conductive channels and co-catalyst, through simple incorporation of graphene oxide (GO) into PPy and subsequent in situ reduction from GO/PPy to RGO/PPy composite film. The RGO/PPy film is fabricated as a counter electrode for dye-sensitized solar cells, and it exhibits...

Journal: :Small 2013
Shihabudheen M Maliyekkal T S Sreeprasad Deepti Krishnan Summayya Kouser Abhishek Kumar Mishra Umesh V Waghmare T Pradeep

Unprecedented adsorption of chlorpyrifos (CP), endosulfan (ES), and malathion (ML) onto graphene oxide (GO) and reduced graphene oxide (RGO) from water is reported. The observed adsorption capacities of CP, ES, and ML are as high as ~1200, 1100, and 800 mg g(-1) , respectively. Adsorption is found to be insensitive to pH or background ions. The adsorbent is reusable and can be applied in the fi...

Journal: :ACS nano 2014
Marcus A Worsley Thang T Pham Aiming Yan Swanee J Shin Jonathan R I Lee Michael Bagge-Hansen William Mickelson Alex Zettl

Aerogels are used in a broad range of scientific and industrial applications due to their large surface areas, ultrafine pore sizes, and extremely low densities. Recently, a large number of reports have described graphene aerogels based on the reduction of graphene oxide (GO). Though these GO-based aerogels represent a considerable advance relative to traditional carbon aerogels, they remain si...

2016
Xuan-Hung Pham Eunil Hahm Hyung-Mo Kim Seongbo Shim Tae Han Kim Dae Hong Jeong Yoon-Sik Lee Bong-Hyun Jun

A hybrid of Ag nanoparticle (NP)-embedded thin silica-coated graphene oxide (GO@SiO₂@Ag NPs) was prepared as a surface-enhanced Raman scattering (SERS) substrate. A 6 nm layer of silica was successfully coated on the surface of GO by the physical adsorption of sodium silicate, followed by the hydrolysis of 3-mercaptopropyl trimethoxysilane. Ag NPs were introduced onto the thin silica-coated gra...

2014
Sangiliyandi Gurunathan JaeWoong Han Jung Hyun Park Jin Hoi Kim

BACKGROUND Recently, graphene and graphene-related materials have attracted much attention due their unique properties, such as their physical, chemical, and biocompatibility properties. This study aimed to determine the cytotoxic effects of graphene oxide (GO) that is reduced biologically using Ganoderma spp. mushroom extracts in MDA-MB-231 human breast cancer cells. METHODS Herein, we descr...

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...

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