DFT study of graphene oxide reduction by a dopamine species

2019 ◽  
Vol 118 (5) ◽  
pp. e1637029 ◽  
Author(s):  
Nicolás Domancich ◽  
Ana Rossi Fernández ◽  
Lorena Meier ◽  
Silvia Fuente ◽  
Norberto Castellani
Keyword(s):  
Graphene Oxide ◽  
Dft Study ◽  
Oxide Reduction

scholarly journals Raman Spectroscopy Investigation of Graphene Oxide Reduction by Laser Scribing

2021 ◽  
Vol 7 (2) ◽  
pp. 48
Author(s):  
Vittorio Scardaci ◽  
Giuseppe Compagnini
Keyword(s):  
Raman Spectroscopy ◽  
Graphene Oxide ◽  
Reduce Graphene Oxide ◽  
Oxide Reduction ◽  
Material Parameters ◽  
Laser Scribing ◽  
Wide Range ◽  
Scan Speed ◽  
Laser Reduction

Laser scribing has been proposed as a fast and easy tool to reduce graphene oxide (GO) for a wide range of applications. Here, we investigate laser reduction of GO under a range of processing and material parameters, such as laser scan speed, number of laser passes, and material coverage. We use Raman spectroscopy for the characterization of the obtained materials. We demonstrate that laser scan speed is the most influential parameter, as a slower scan speed yields poor GO reduction. The number of laser passes is influential where the material coverage is higher, producing a significant improvement of GO reduction on a second pass. Material coverage is the least influential parameter, as it affects GO reduction only under restricted conditions.

scholarly journals Green Routes for Graphene Oxide Reduction and Self- Assembled Graphene Oxide Micro- and Nanostructures Production

10.5772/67403 ◽  
2017 ◽  
Author(s):  
Rebeca Ortega-Amaya ◽  
Yasuhiro Matsumoto ◽  
Esteban Díaz-Torres ◽  
Claudio Davet Gutierrez-Lazos ◽  
Manuel Alejandro Pérez-Guzmán ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxide Reduction ◽  
Self Assembled

Enhancing the Efficiency of Graphene Oxide Reduction in Low-Power Digital Video Disc Drives by a Simple Precursor Heat Treatment

2019 ◽  
Vol 11 (51) ◽  
pp. 48162-48171 ◽  
Author(s):  
Wendou Feng ◽  
Xin Li ◽  
Songyue Lin ◽  
Xiaofei Miao ◽  
Wei Wang ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Graphene Oxide ◽  
Low Power ◽  
Digital Video ◽  
Oxide Reduction ◽  
Digital Video Disc ◽  
Video Disc

Ion chromatographic determination of hydrazine in excess ammonia for monitoring graphene oxide reduction reaction

Talanta ◽  
2019 ◽  
Vol 205 ◽  
pp. 120081 ◽  
Author(s):  
Aleksandra N. Koreshkova ◽  
Vipul Gupta ◽  
Anton Peristyy ◽  
Pavel N. Nesterenko ◽  
Thomas Rodemann ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Chromatographic Determination ◽  
Reduction Reaction ◽  
Oxide Reduction

Revealing the Mechanism of Graphene Oxide Reduction by Supercritical Ethanol with First-Principles Calculations

2019 ◽  
Vol 123 (14) ◽  
pp. 8932-8942
Author(s):  
Jin-Song Kim ◽  
Chol-Jun Yu ◽  
Kum-Chol Ri ◽  
Song-Hyok Choe ◽  
Jin-Chon Ri
Keyword(s):  
Graphene Oxide ◽  
First Principles ◽  
First Principles Calculations ◽  
Oxide Reduction ◽  
Supercritical Ethanol

A comparative study of graphene oxide reduction in vapor and liquid phases

2017 ◽  
Vol 32 (1) ◽  
pp. 21-26 ◽  
Author(s):  
Yun-zhen Chang ◽  
Gao-yi Han ◽  
Yao-ming Xiao ◽  
Hai-han Zhou ◽  
Jian-hua Dong
Keyword(s):  
Graphene Oxide ◽  
Comparative Study ◽  
Oxide Reduction ◽  
Liquid Phases

Photolatent base catalyzed Michael-addition and concomitant in situ graphene oxide reduction to obtain electrically and thermally conductive UV-cured composite

Polymer ◽  
2017 ◽  
Vol 108 ◽  
pp. 251-256 ◽  
Author(s):  
Arnaud Gigot ◽  
Alessio Morra ◽  
Micaela Castellino ◽  
Candido F. Pirri ◽  
Vikas Mittal ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Michael Addition ◽  
Oxide Reduction ◽  
Thermally Conductive

Graphene Oxide Reduction Activity of Seaweed Polymer Derivative:Efficient Bio-Based Alternative

2017 ◽  
Vol 113 (07) ◽  
pp. 1361
Author(s):  
Nilesh Vadodariya ◽  
Jai Prakash Chaudhary ◽  
Faisal Kholiya ◽  
Mukesh Sharma ◽  
Ramavatar Meena
Keyword(s):  
Graphene Oxide ◽  
Oxide Reduction ◽  
Reduction Activity

Green Technology Enabled Graphene Oxide Reduction Using Justichia wynaadensis Extract and Assessment of In Vitro Antioxidant and Antibacterial Activity

2018 ◽  
Vol 24 (8) ◽  
pp. 5726-5730 ◽  
Author(s):  
P Shubha ◽  
K Namratha ◽  
K. C Mithali ◽  
V Divya ◽  
M. S Thakur ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Graphene Oxide ◽  
Aqueous Extract ◽  
Biological Activities ◽  
Radical Scavenging ◽  
Green Technology ◽  
Oxide Reduction ◽  
Efficient Removal ◽  
Sem Images

Graphene oxide (GO) was reduced using Justichia wynaadensis aqueous extract. GO was mixed with extract and refluxed at 100 °C for 10 h to obtain reduced GO. PXRD of rGO showed broad peak at 2 = 25° and disappearance of 2 = 9.75° after refluxing which indicates efficient removal of oxygen containing groups. SEM images of rGO showed flaky structures typical of retainment of GO structure with folded curtains like appearance of rGO. UV-vis spectra demonstrated absorption band ~300 nm and shoulder at 400 nm corresponding to π–π* transitions and C ═ O bonds respectively indicating that rGO is red shifted due to decrease in oxygen functional groups. rGO showed potent antibacterial activity against Staphylococcus aureus, upon testing against S. aureus and P. aeruginosa. It showed 67% radical scavenging against DPPH at 500 μg/mL concentration. In conclusion, J. wynaadensis aqueous extract efficiently removed oxygen functionalities from GO surface with significant biological activities.

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