Fabrication of reduced graphene oxide/metal (Cu, Ni, Co) nanoparticle hybrid composites via a facile thermal reduction method

RSC Advances ◽  
2015 ◽  
Vol 5 (62) ◽  
pp. 49973-49978 ◽  
Author(s):  
Xiubing Huang ◽  
Guixia Zhao ◽  
Xiangke Wang
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Reduction Method ◽  
Hybrid Composites ◽  
Thermal Reduction ◽  
Reduced Graphene

Reduced graphene oxide/metal (e.g., Cu, Ni, Co) nanoparticle hybrid composites were prepared via a facile thermal reduction method at 500 °C under flowing argon without any usage of external reductive gases.

Reduced Graphene Oxide Paper: Fabrication by a Green Thermal Reduction Method and Preliminary Study of its In Vitro Cytotoxicity

2017 ◽  
Vol 45 ◽  
pp. 199-207 ◽  
Author(s):  
Xin Wang ◽  
Peng Li ◽  
Claudia Luedecke ◽  
Qiang Zhang ◽  
Zan Wang ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Mammalian Cells ◽  
Reduction Method ◽  
Heating Temperature ◽  
Synthesis Method ◽  
Thermal Reduction ◽  
Graphene Films ◽  
Reduced Graphene

Graphene films have been intensively explored because of their unique mechanical and physicochemical properties for potential applications in field of tissue engineering and implants. However, for biomedical applications, it is necessary to fully understand the toxicity and biocompatibility of the prepared graphene films since different synthesis method might lead to different biological properties. Here we report a step-by-step thermal reduction method of preparing reduced graphene oxide (rGO) film directly on various substrates at low heating temperature (below about 200 °C) without requiring any chemical reduction agent like hydrazine or other reductants (therefore we call it green method). Slowly heating GO hydrosol that was coated on the surface of a glass cell-culture dish or inside of a polypropylene tube from room temperature to 60, 100, and 160 °C for 12 h, respectively, a shiny and flat surface without crumpled structure or tiny pores was formed. We peeled it off from the substrate to explore its cytotoxicity. The results exhibited that the rGO film was biocompatible with Cal-72 cell but against Escherichia coli bacteria. Our work confirmed that rGO film produced by the green reduction method is cytocompatible with mammalian cells, which makes this rGO film a promising material for tissue engineering scaffold or as a surface-modification coating of an implant.

Facile synthesis of thermally reduced graphene oxide-sepiolite nanohybrid via intercalation and thermal reduction method

2017 ◽  
Vol 135 ◽  
pp. 510-515 ◽  
Author(s):  
M.R. Vengatesan ◽  
S. Singh ◽  
S. Stephen ◽  
K. Prasanna ◽  
C.W. Lee ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Reduction Method ◽  
Thermal Reduction ◽  
Facile Synthesis ◽  
Reduced Graphene

scholarly journals Preparation of a graphene/silver hybrid membrane as a new nanofiltration membrane

RSC Advances ◽  
2017 ◽  
Vol 7 (77) ◽  
pp. 49159-49165 ◽  
Author(s):  
Gui-fei Liu ◽  
Lin-jun Huang ◽  
Yan-xin Wang ◽  
Jian-guo Tang ◽  
Yao Wang ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Composite Membrane ◽  
Reduction Method ◽  
Water Flux ◽  
Thermal Reduction ◽  
Hybrid Membrane ◽  
Nanofiltration Membrane ◽  
Reduced Graphene

In this study, we describe the preparation, characterization, water flux and rejection performance of a composite membrane formed from reduced graphene oxide (RGO) and silver nanoparticles (AgNP) via a rapid thermal reduction method.

Fabrication and biocompatibility of reduced graphene oxide/poly(vinylidene fluoride) composite membranes

RSC Advances ◽  
2015 ◽  
Vol 5 (121) ◽  
pp. 99841-99847 ◽  
Author(s):  
Supeng Pei ◽  
Fei Ai ◽  
Song Qu
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Reduction Method ◽  
Vinylidene Fluoride ◽  
Composite Membranes ◽  
Thermal Reduction ◽  
Reduced Graphene ◽  
Poly Vinylidene Fluoride ◽  
Good Biocompatibility

RGO/PVDF composite membranes with different RGO loadings were prepared by a convenient in situ thermal reduction method and the structural study reveals the good dispersion of RGO in the PVDF, moreover, RGO/PVDF membranes show good biocompatibility.

Band gap engineering of BiOI via oxygen vacancies induced by graphene for improved photocatalysis

2019 ◽  
Vol 43 (3) ◽  
pp. 1523-1530 ◽  
Author(s):  
Xuejun Ren ◽  
Jingwen Yao ◽  
Lei Cai ◽  
Jibiao Li ◽  
Xingzhong Cao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Band Gap ◽  
Reduced Graphene Oxide ◽  
Oxygen Vacancies ◽  
Reduction Method ◽  
Thermal Reduction ◽  
Band Gap Engineering ◽  
Bismuth Iodide ◽  
Reduced Graphene

A reduced graphene oxide–bismuth iodide oxide (rGO–BiOI) composite was prepared by a thermal reduction method.

Thermal reduction to control the spacing in graphene oxide membranes: effect on ion diffusion and electrical conduction

RSC Advances ◽  
2016 ◽  
Vol 6 (74) ◽  
pp. 70012-70017 ◽  
Author(s):  
A. Alhadhrami ◽  
S. Salgado ◽  
V. Maheshwari
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Electrical Conduction ◽  
Thermal Reduction ◽  
Electrochemical Characteristics ◽  
Ion Diffusion ◽  
Layer Spacing ◽  
Reduced Graphene ◽  
Oxide Membranes ◽  
Graphene Oxide Membranes

Inter-layer spacing in reduced graphene-oxide membranes which modulates their ion-diffusion electrical and electrochemical characteristics is controlled by temperature of thermal reduction.

scholarly journals Synthesis and characterization of sulfophenyl-functionalized reduced graphene oxide sheets

RSC Advances ◽  
2017 ◽  
Vol 7 (44) ◽  
pp. 27224-27234 ◽  
Author(s):  
Benjamin Diby Ossonon ◽  
Daniel Bélanger
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Thermal Reduction ◽  
Synthesis And Characterization ◽  
Reduced Graphene ◽  
Graphene Oxide Sheets

We report modification of graphene oxide by thermal reduction to obtain reduced graphene oxide and subsequent functionalization with sulfophenyl groups to obtain SRGO as well as the characterization of these materials by TGA-MS.

Solvothermal Synthesis of Reduced Graphene Oxide/Ferroferric Oxide Hybrid Composites with Enhanced Microwave Absorption Properties

NANO ◽  
2017 ◽  
Vol 12 (12) ◽  
pp. 1750144 ◽  
Author(s):  
Ruiwen Shu ◽  
Meng Wang ◽  
Yingying Yang ◽  
Siyu Chang ◽  
Gengyuan Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Microwave Absorption ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Absorption Characteristic ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Ferroferric Oxide ◽  
Reduced Graphene

In this work, reduced graphene oxide (RGO)/ferroferric oxide (RGO/Fe3O4) hybrid composite was successfully fabricated by a facile one-step solvothermal method. The structure, chemical composition, morphology and magnetic properties of the samples were investigated in detail. Fe3O4 microspheres with an average diameter of 250[Formula: see text]nm were uniformly anchored on the surface of the RGO sheets without large aggregation. Moreover, the results demonstrated that the hybrid composite exhibited obviously enhanced microwave absorption properties compared with the pure Fe3O4 microspheres. The minimum reflection loss (RL) of the hybrid composite reached [Formula: see text]36.8[Formula: see text]dB at 17.2[Formula: see text]GHz with a thickness of 5.0[Formula: see text]mm and its effective absorption bandwidth (lower than [Formula: see text]10[Formula: see text]dB) was 3.9[Formula: see text]GHz with a thickness of 2.5[Formula: see text]mm. Significantly, the hybrid composite exhibited a dual-waveband absorption characteristic covering the C and Ku bands. Besides, the relationship between the matching thickness and peak frequency was reasonably explained according to the quarter-wavelength matching theory. Therefore, the obtained composite was a promising candidate for application in microwave absorption.

The effect of the thermal reduction temperature on the structure and sorption capacity of reduced graphene oxide materials

2016 ◽  
Vol 361 ◽  
pp. 213-220 ◽  
Author(s):  
Alexandr V. Dolbin ◽  
Maria V. Khlistyuck ◽  
Valentin B. Esel'son ◽  
Viktor G. Gavrilko ◽  
Nikolay A. Vinnikov ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Sorption Capacity ◽  
Thermal Reduction ◽  
Oxide Materials ◽  
Reduction Temperature ◽  
Reduced Graphene
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