Electrical current stimulated desorption of carbon dioxide adsorbed on graphene based structures

RSC Advances ◽  
2016 ◽  
Vol 6 (49) ◽  
pp. 43401-43407 ◽  
Author(s):  
Ritesh Sevanthi ◽  
Fahmida Irin ◽  
Dorsa Parviz ◽  
W. Andrew Jackson ◽  
Micah J. Green
Keyword(s):  
Carbon Dioxide ◽  
Graphene Oxide ◽  
Adsorption Capacity ◽  
Reduced Graphene Oxide ◽  
Joule Heating ◽  
Electrical Current ◽  
Pristine Graphene ◽  
Graphene Films ◽  
Reduced Graphene

The objective of this study was to investigate Joule heating/electric swing adsorption (ESA) as a mode of regeneration and to compare the carbon dioxide (CO2) adsorption capacity of pristine graphene films and reduced graphene oxide (rGO) aerogels.

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.

Electrolyte-assisted hydrothermal synthesis of holey graphene films for all-solid-state supercapacitors

2018 ◽  
Vol 6 (24) ◽  
pp. 11471-11478 ◽  
Author(s):  
Daoqing Liu ◽  
Qianwei Li ◽  
Huazhang Zhao
Keyword(s):  
Graphene Oxide ◽  
Hydrothermal Synthesis ◽  
Solid State ◽  
Reduced Graphene Oxide ◽  
Oxide Films ◽  
Graphene Films ◽  
Reduced Graphene

Fabrication of holey reduced graphene oxide films with oxygen-containing groups and their application for all-solid-state supercapacitors.

scholarly journals Photocatalytic Reduction of Carbon Dioxide over Quinacridone Nanoparticles Supported on Reduced Graphene Oxide

2019 ◽  
Vol 58 (22) ◽  
pp. 9636-9643 ◽  
Author(s):  
Peng Yang ◽  
Shien Guo ◽  
Xiaoxiao Yu ◽  
Fengtao Zhang ◽  
Bo Yu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Photocatalytic Reduction ◽  
Reduced Graphene

A practical carbon dioxide gas sensor using room-temperature hydrogen plasma reduced graphene oxide

2014 ◽  
Vol 193 ◽  
pp. 692-700 ◽  
Author(s):  
Syed Muhammad Hafiz ◽  
Richard Ritikos ◽  
Thomas James Whitcher ◽  
Nadia Md. Razib ◽  
Daniel Chia Sheng Bien ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensor ◽  
Room Temperature ◽  
Hydrogen Plasma ◽  
Carbon Dioxide Gas ◽  
Reduced Graphene

A three-dimensional nickel-doped reduced graphene oxide composite for selective separation of hemoglobin with a high adsorption capacity

RSC Advances ◽  
2016 ◽  
Vol 6 (61) ◽  
pp. 56278-56286 ◽  
Author(s):  
Lei Chen ◽  
Zhang-Run Xu
Keyword(s):  
Graphene Oxide ◽  
Adsorption Capacity ◽  
Reduced Graphene Oxide ◽  
Self Assembly ◽  
Three Dimensional ◽  
High Adsorption ◽  
Reduced Graphene ◽  
One Step ◽  
Reduced Graphene Oxide Aerogel ◽  
High Adsorption Capacity

A 3D nickel-doped reduced graphene oxide aerogel was prepared by one-step reduction and self-assembly, which exhibited favorable selectivity and high adsorption capacity for isolating hemoglobin.

γ-Alumina Nanorod/Reduced Graphene Oxide as Support for Poly(ethylenimine) to Capture Carbon Dioxide from Flue Gas

2016 ◽  
Vol 4 (11) ◽  
pp. 1409-1419 ◽  
Author(s):  
Koushik Bhowmik ◽  
Amrita Chakravarty ◽  
Sandip Bysakh ◽  
Goutam De
Keyword(s):  
Carbon Dioxide ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Flue Gas ◽  
Reduced Graphene

scholarly journals Modulation of Conductivity of Alginate Hydrogels Containing Reduced Graphene Oxide through the Addition of Proteins

Pharmaceutics ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1473
Author(s):  
Ahmed Raslan ◽  
Jesús Ciriza ◽  
Ana María Ochoa de Retana ◽  
María Luisa Sanjuán ◽  
Muhammet S. Toprak ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Regenerative Medicine ◽  
Adsorption Capacity ◽  
Reduced Graphene Oxide ◽  
Exciting Field ◽  
Adsorption Models ◽  
Reduced Graphene ◽  
Alginate Hydrogels ◽  
Pseudo Second Order ◽  
Hydrophobic Nature

Modifying hydrogels in order to enhance their conductivity is an exciting field with applications in cardio and neuro-regenerative medicine. Therefore, we have designed hybrid alginate hydrogels containing uncoated and protein-coated reduced graphene oxide (rGO). We specifically studied the adsorption of three different proteins, BSA, elastin, and collagen, and the outcomes when these protein-coated rGO nanocomposites are embedded within the hydrogels. Our results demonstrate that BSA, elastin, and collagen are adsorbed onto the rGO surface, through a non-spontaneous phenomenon that fits Langmuir and pseudo-second-order adsorption models. Protein-coated rGOs are able to preclude further adsorption of erythropoietin, but not insulin. Collagen showed better adsorption capacity than BSA and elastin due to its hydrophobic nature, although requiring more energy. Moreover, collagen-coated rGO hybrid alginate hydrogels showed an enhancement in conductivity, showing that it could be a promising conductive scaffold for regenerative medicine.

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