Quantitative Analysis of Structure and Bandgap Changes in Graphene Oxide Nanoribbons during Thermal Annealing

2012 ◽  
Vol 134 (28) ◽  
pp. 11774-11780 ◽  
Author(s):  
Yu Zhu ◽  
Xianyu Li ◽  
Qinjia Cai ◽  
Zhengzong Sun ◽  
Gilberto Casillas ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Quantitative Analysis ◽  
Thermal Annealing ◽  
Graphene Oxide Nanoribbons

Enhancement of self-powered humidity sensing of graphene oxide–based triboelectric nanogenerators by addition of graphene oxide nanoribbons

2021 ◽  
Vol 188 (8) ◽  
Author(s):  
Faezeh Ejehi ◽  
Raheleh Mohammadpour ◽  
Elham Asadian ◽  
Somayeh Fardindoost ◽  
Pezhman Sasanpour
Keyword(s):  
Graphene Oxide ◽  
Humidity Sensing ◽  
Graphene Oxide Nanoribbons ◽  
Self Powered ◽  
Triboelectric Nanogenerators

scholarly journals Tuning the hierarchical pore structure of graphene oxide through dual thermal activation for high-performance supercapacitor

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jeongpil Kim ◽  
Jeong-Hyun Eum ◽  
Junhyeok Kang ◽  
Ohchan Kwon ◽  
Hansung Kim ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Pore Structure ◽  
Specific Capacitance ◽  
Surface Area ◽  
Thermal Annealing ◽  
High Performance ◽  
Annealing Process ◽  
Supercapacitor Electrode ◽  
Simple Method ◽  
Surface Areas

AbstractHerein, we introduce a simple method to prepare hierarchical graphene with a tunable pore structure by activating graphene oxide (GO) with a two-step thermal annealing process. First, GO was treated at 600 °C by rapid thermal annealing in air, followed by subsequent thermal annealing in N2. The prepared graphene powder comprised abundant slit nanopores and micropores, showing a large specific surface area of 653.2 m2/g with a microporous surface area of 367.2 m2/g under optimized conditions. The pore structure was easily tunable by controlling the oxidation degree of GO and by the second annealing process. When the graphene powder was used as the supercapacitor electrode, a specific capacitance of 372.1 F/g was achieved at 0.5 A/g in 1 M H2SO4 electrolyte, which is a significantly enhanced value compared to that obtained using activated carbon and commercial reduced GO. The performance of the supercapacitor was highly stable, showing 103.8% retention of specific capacitance after 10,000 cycles at 10 A/g. The influence of pore structure on the supercapacitor performance was systematically investigated by varying the ratio of micro- and external surface areas of graphene.

scholarly journals Efficient interfacial interaction for improving mechanical properties of polydimethylsiloxane nanocomposites filled with low content of graphene oxide nanoribbons

RSC Advances ◽  
2017 ◽  
Vol 7 (36) ◽  
pp. 22045-22053 ◽  
Author(s):  
Neng-Jian Huang ◽  
Jing Zang ◽  
Guo-Dong Zhang ◽  
Li-Zhi Guan ◽  
Shi-Neng Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Filler Content ◽  
Interfacial Interaction ◽  
Solvent Free ◽  
The Other ◽  
Graphene Oxide Nanoribbons ◽  
Free Process ◽  
Reinforcement Efficiency

GONR-filled H-t-PDMS nanocomposites were fabricated by using a facile solvent-free process, and the reinforcement efficiency of GONRs at low filler content is superior to those of the other carbon nano-fillers.

A silver/graphene oxide nanocomposite film as a flexible SERS substrate for reliable quantitative analysis using high-speed spiral scanning spectrometry

2017 ◽  
Vol 53 (73) ◽  
pp. 10108-10111 ◽  
Author(s):  
Yejung Choi ◽  
Si Won Song ◽  
Wytse Hooch Antink ◽  
Hyung Min Kim ◽  
Yuanzhe Piao
Keyword(s):  
Graphene Oxide ◽  
Quantitative Analysis ◽  
Nanocomposite Film ◽  
High Speed ◽  
Scanning System ◽  
Adhesive Tape ◽  
Sers Substrate ◽  
Spiral Scanning ◽  
System P

Excellent uniformity (∼1.5% RSD) in SERS signals was obtained from an Ag/GO decorated adhesive tape on a simple in-house cylindrical scanning system.

scholarly journals Berichtigung: Graphene Oxide Nanoribbons from the Oxidative Opening of Carbon Nanotubes Retain Electrochemically Active Metallic Impurities

2014 ◽  
Vol 126 (21) ◽  
pp. 5334-5334
Author(s):  
Colin Hong An Wong ◽  
Chun Kiang Chua ◽  
Bahareh Khezri ◽  
Richard D. Webster ◽  
Martin Pumera
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Graphene Oxide Nanoribbons ◽  
Electrochemically Active ◽  
Metallic Impurities

Liquid exfoliation of graphene oxide nanoribbons using chemical assisted laser ablation

2021 ◽  
pp. 2140009
Author(s):  
Siddhant Dhongade ◽  
Pankaj Koinkar ◽  
Akihiro Furube ◽  
Satoshi Sugano
Keyword(s):  
Graphene Oxide ◽  
Laser Ablation ◽  
2D Materials ◽  
Visible Spectroscopy ◽  
Liquid Exfoliation ◽  
Graphene Oxide Nanoribbons ◽  
Laser Ablation Method ◽  
Structural Details ◽  
Uv Visible ◽  
Optical Applications

The interest toward two-dimensional (2D) materials is gradually increasing because of their structure at nanoscale and great importance for electronic and optical applications. In this study, we show the synthesis of graphene oxide (GO) micro-ribbons fabricated by chemical assisted-laser ablation method. In order to confirm the formation of GO, UV-visible spectroscopy (UV-vis) and Raman spectroscopy are used to observe the surface morphological feature and structural details. In addition, a possible mechanism for the growth of GO nanoribbon is discussed. This work indicates a new method to develop GO nanostructures and related nanomaterials.

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