Ultrafast H2-Selective Nanoporous Multilayer Graphene Membrane Prepared by Confined Thermal Annealing

2021 ◽  
Author(s):  
Jeong Pil Kim ◽  
Eunji Choi ◽  
Junhyeok Kang ◽  
Seung Eun Choi ◽  
Yunkyu Choi ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
High Pressure ◽  
Graphene Oxide ◽  
Functional Groups ◽  
Thermal Annealing ◽  
Multilayer Graphene ◽  
Graphene Membrane ◽  
Oxygen Functional Groups ◽  
Co2 Selectivity

H2 selective dense pores are generated in graphene oxide (GO) layer by thermal-decomposition of oxygen-functional groups under high pressure. The nanoporous GO membrane shows H2/CO2 selectivity of 12.1 and H2...

ChemInform Abstract: Graphene Oxide Catalyzed C-H Bond Activation: The Importance of Oxygen Functional Groups for Biaryl Construction.

ChemInform ◽  
2016 ◽  
Vol 47 (26) ◽  
Author(s):  
Yongjun Gao ◽  
Pei Tang ◽  
Hu Zhou ◽  
Wei Zhang ◽  
Hanjun Yang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Functional Groups ◽  
Bond Activation ◽  
Oxygen Functional Groups

scholarly journals Room temperature production of graphene oxide with thermally labile oxygen functional groups for improved lithium ion battery fabrication and performance

2019 ◽  
Vol 7 (16) ◽  
pp. 9646-9655 ◽  
Author(s):  
Jiadong Qin ◽  
Yubai Zhang ◽  
Sean E. Lowe ◽  
Lixue Jiang ◽  
Han Yeu Ling ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Battery ◽  
Functional Groups ◽  
Room Temperature ◽  
Synthesis Method ◽  
Lithium Ion ◽  
Temperature Synthesis ◽  
Room Temperature Synthesis ◽  
Oxygen Functional Groups ◽  
And Performance

We report a room-temperature synthesis method to produce graphene oxide with thermally-labile oxygen functional groups.

Modulation of oxygen functional groups and their influence on the supercapacitor performance of reduced graphene oxide

2020 ◽  
Vol 44 (44) ◽  
pp. 19022-19027
Author(s):  
Zegao Wang ◽  
Yuqing Wang ◽  
Xin Hao ◽  
Jingbo Liu ◽  
Yuanfu Chen ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Specific Capacitance ◽  
Reduced Graphene Oxide ◽  
Functional Groups ◽  
Oxygen Functional Groups ◽  
Reduced Graphene ◽  
Supercapacitor Performance

Through tuning the oxygen function groups, it was demonstrated that the specific capacitance of reduced graphene oxide can increase from 136 F g−1 to 182 F g−1.

The influence of oxygen functional groups on gas-sensing properties of reduced graphene oxide (rGO) at room temperature

RSC Advances ◽  
2016 ◽  
Vol 6 (57) ◽  
pp. 52339-52346 ◽  
Author(s):  
X. Wang ◽  
X. Li ◽  
Y. Zhao ◽  
Y. Chen ◽  
J. Yu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Functional Groups ◽  
Room Temperature ◽  
Gas Sensing ◽  
Sensing Properties ◽  
Oxygen Functional Groups ◽  
Reduced Graphene ◽  
Gas Sensing Properties

Three methods were used to prepare reduced graphene oxide (rGO) with various ratios of oxygen functional groups, such as –OOH, –OH and CO, to study their effects on the NO2 sensing properties at room temperature.

scholarly journals Isotherm and Kinetic Modeling of Strontium Adsorption on Graphene Oxide

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2780
Author(s):  
Abdulrahman Abu-Nada ◽  
Ahmed Abdala ◽  
Gordon McKay
Keyword(s):  
Graphene Oxide ◽  
Aqueous Solutions ◽  
Functional Groups ◽  
Photoelectron Spectroscopy ◽  
Active Sites ◽  
Nitrogen Adsorption ◽  
Order Kinetic ◽  
X Ray ◽  
Oxygen Functional Groups ◽  
Bet Analysis

In this study, graphene oxide (GO) was synthesized using Hummers method. The synthesized GO was characterized using field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), Fourier transformed infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and Brunauer–Emmett–Teller (BET) nitrogen adsorption. The analyses confirmed the presence of oxygen functional groups (C=O and C-O-C) on the GO surface. These oxygen functional groups act as active sites in the adsorption Sr (II). The BET analysis revealed the surface area of GO of 232 m2/g with a pore volume of 0.40 cm3/g. The synthesized GO was used as an adsorbent for removing Sr (II) from aqueous solutions. The adsorption equilibrium and kinetic results were consistent with the Langmuir isotherm model and the pseudo-second-order kinetic model. A maximum strontium adsorption capacity of 131.4 mg/g was achieved. The results show that the GO has an excellent adsorption capability for removing Sr (II) from aqueous solutions and potential use in wastewater treatment applications.

Role of oxygen vacancies in vanadium oxide and oxygen functional groups in graphene oxide for room temperature CO2 gas sensors

2019 ◽  
Vol 294 ◽  
pp. 17-24 ◽  
Author(s):  
Shrouk E. Zaki ◽  
Mohamed A. Basyooni ◽  
Mohamed Shaban ◽  
Mohamed Rabia ◽  
Yasin Ramazan Eker ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Vanadium Oxide ◽  
Functional Groups ◽  
Gas Sensors ◽  
Room Temperature ◽  
Oxygen Vacancies ◽  
Co2 Gas ◽  
Oxygen Functional Groups

The evolution of oxygen-functional groups of graphene oxide as a function of oxidation degree

2021 ◽  
pp. 125629
Author(s):  
Nuor Sariyan Suhaimin ◽  
Mohamad Fahrul Radzi Hanifah ◽  
Masaud Azhar ◽  
Juhana Jaafar ◽  
Madzlan Aziz ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Functional Groups ◽  
Oxidation Degree ◽  
Oxygen Functional Groups ◽  
Evolution Of Oxygen

Graphene Oxide Catalyzed C−H Bond Activation: The Importance of Oxygen Functional Groups for Biaryl Construction

2016 ◽  
Vol 128 (9) ◽  
pp. 3176-3180 ◽  
Author(s):  
Yongjun Gao ◽  
Pei Tang ◽  
Hu Zhou ◽  
Wei Zhang ◽  
Hanjun Yang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Functional Groups ◽  
Bond Activation ◽  
Oxygen Functional Groups
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