Stable graphene oxide hydrophobic photonic liquids

2022 ◽  
Author(s):  
Yi-Tao Xu ◽  
Joyce Li ◽  
Mark J. MacLachlan
Keyword(s):  
Graphene Oxide ◽  
Room Temperature ◽  
Periodic Structures ◽  
Enhanced Stability ◽  
Hydrophobic Media

Graphene oxide photonic liquids in various hydrophobic media show highly tunable periodic structures with light reflections up to ∼1300 nm, and significantly enhanced stability at room temperature and during heating.

Graphene oxide as an efficient hole-transporting material for high-performance perovskite solar cells with enhanced stability

2017 ◽  
Vol 5 (20) ◽  
pp. 9852-9858 ◽  
Author(s):  
Qing-Dan Yang‡ ◽  
Jia Li ◽  
Yuanhang Cheng ◽  
Ho-Wa Li ◽  
Zhiqiang Guan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Solar Cells ◽  
High Performance ◽  
Room Temperature ◽  
Perovskite Solar Cells ◽  
Simple Solution ◽  
Hole Transporting ◽  
Hole Transporting Material ◽  
Hole Transporting Materials ◽  
Enhanced Stability

We demonstrated highly efficient and stable perovskite solar cells with a simple solution and room temperature-processed GO as hole-transporting materials.

Polyaniline-Reduced Graphene Oxide Nanosheets for Room Temperature NH3 Detection

2021 ◽  
Author(s):  
Junyu Chang ◽  
Xiaobo Zhang ◽  
Zhenming Wang ◽  
Chunsheng Li ◽  
Qi Hu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Room Temperature ◽  
Graphene Oxide Nanosheets ◽  
Reduced Graphene

scholarly journals Graphene oxide prepared by a room temperature oxidation using a green mechanochemical method.

2021 ◽  
Vol 27 (S1) ◽  
pp. 726-728
Author(s):  
G. Tarango-Rivero ◽  
G. Herrera-Perez ◽  
C. Carreño-Gallardo ◽  
C.G. Garay-Reyes ◽  
I. Estrada-Guel ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Room Temperature ◽  
Mechanochemical Method ◽  
Temperature Oxidation

scholarly journals Functionalized Reduced Graphene Oxide Thin Films for Ultrahigh CO2 Gas Sensing Performance at Room Temperature

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 623
Author(s):  
Monika Gupta ◽  
Huzein Fahmi Hawari ◽  
Pradeep Kumar ◽  
Zainal Arif Burhanudin ◽  
Nelson Tansu
Keyword(s):  
Thin Films ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensor ◽  
Functional Groups ◽  
Recovery Time ◽  
Room Temperature ◽  
Co2 Gas ◽  
Reduced Graphene ◽  
Response And Recovery

The demand for carbon dioxide (CO2) gas detection is increasing nowadays. However, its fast detection at room temperature (RT) is a major challenge. Graphene is found to be the most promising sensing material for RT detection, owing to its high surface area and electrical conductivity. In this work, we report a highly edge functionalized chemically synthesized reduced graphene oxide (rGO) thin films to achieve fast sensing response for CO2 gas at room temperature. The high amount of edge functional groups is prominent for the sorption of CO2 molecules. Initially, rGO is synthesized by reduction of GO using ascorbic acid (AA) as a reducing agent. Three different concentrations of rGO are prepared using three AA concentrations (25, 50, and 100 mg) to optimize the material properties such as functional groups and conductivity. Thin films of three different AA reduced rGO suspensions (AArGO25, AArGO50, AArGO100) are developed and later analyzed using standard FTIR, XRD, Raman, XPS, TEM, SEM, and four-point probe measurement techniques. We find that the highest edge functionality is achieved by the AArGO25 sample with a conductivity of ~1389 S/cm. The functionalized AArGO25 gas sensor shows recordable high sensing properties (response and recovery time) with good repeatability for CO2 at room temperature at 500 ppm and 50 ppm. Short response and recovery time of ~26 s and ~10 s, respectively, are achieved for 500 ppm CO2 gas with the sensitivity of ~50 Hz/µg. We believe that a highly functionalized AArGO CO2 gas sensor could be applicable for enhanced oil recovery, industrial and domestic safety applications.

Room-Temperature Synthesis of Soluble Carbon Nanotubes by the Sonication of Graphene Oxide Nanosheets

2009 ◽  
Vol 131 (46) ◽  
pp. 16832-16837 ◽  
Author(s):  
Shuai Wang ◽  
Lena Ai ling Tang ◽  
Qiaoliang Bao ◽  
Ming Lin ◽  
Suzi Deng ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Room Temperature ◽  
Graphene Oxide Nanosheets ◽  
Temperature Synthesis ◽  
Room Temperature Synthesis ◽  
Soluble Carbon
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