Scalable production of wrinkled and few-layered graphene sheets and their use for oil and organic solvent absorption

2015 ◽  
Vol 17 (10) ◽  
pp. 6913-6918 ◽  
Author(s):  
Dan Liu ◽  
Weiwei Lei ◽  
Ying Chen
Keyword(s):  
Organic Solvent ◽  
Mass Production ◽  
Low Cost ◽  
Graphene Sheets ◽  
High Quality ◽  
Solvent Absorption ◽  
Scalable Production

High-quality wrinkled and few-layered graphene sheets have been produced via a mechano-thermal exfoliation process for a simple, effective and low-cost mass production.

Rapid and scalable production of high-quality phosphorene by plasma–liquid technology

2020 ◽  
Vol 56 (2) ◽  
pp. 221-224 ◽  
Author(s):  
Hao Huang ◽  
Ming Gao ◽  
Yihong Kang ◽  
Jia Li ◽  
Jiahong Wang ◽  
...  
Keyword(s):  
Mass Production ◽  
High Quality ◽  
Scalable Production

A facile plasma–liquid technique is designed and demonstrated for rapid and mass production of few-layered phosphorene.

Ultralight and highly compressible coal oxide-modified graphene aerogels for organic solvent absorption and light-to-heat conversion

2020 ◽  
Vol 44 (6) ◽  
pp. 2228-2235 ◽  
Author(s):  
Shengchao Hou ◽  
Yan Lv ◽  
Xueyan Wu ◽  
Jixi Guo ◽  
Qingqing Sun ◽  
...  
Keyword(s):  
Organic Solvent ◽  
Conversion Efficiency ◽  
Low Cost ◽  
Thermal Conversion ◽  
Absorption Capacity ◽  
Solar Thermal ◽  
Graphene Aerogels ◽  
Solvent Absorption ◽  
Modified Graphene ◽  
High Absorption

Ultralight, hydrophobic, highly compressible and low-cost coal oxide-modified graphene aerogels exhibit high absorption capacity and high solar thermal conversion efficiency.

Facile and economical exfoliation of graphite for mass production of high-quality graphene sheets

2013 ◽  
Vol 1 (3) ◽  
pp. 500-504 ◽  
Author(s):  
Tianquan Lin ◽  
Jian Chen ◽  
Hui Bi ◽  
Dongyun Wan ◽  
Fuqiang Huang ◽  
...  
Keyword(s):  
Mass Production ◽  
Graphene Sheets ◽  
High Quality

Synthesis of High Quality Few Layer Graphene Sheets in Large Quantities by Radio Frequency Chemical Vapor Deposition

2009 ◽  
Vol 1204 ◽  
Author(s):  
Enkeleda Dervishi ◽  
Zhongrui Li ◽  
Fumiya Watanabe ◽  
Jimmy Shyaka ◽  
Abhijit Biswas ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Radio Frequency ◽  
Vapor Deposition ◽  
Low Cost ◽  
Chemical Vapor ◽  
Graphene Sheets ◽  
Scale Production ◽  
High Quality ◽  
Layer Graphene ◽  
Few Layer Graphene

AbstractThis work reports a low-cost method for large scale production of high quality graphene via radio-frequency chemical vapor deposition. High quantities of graphene were successfully synthesized on the Fe-Co/MgO (2.5:2.5:95 wt.%) catalytic system utilizing acetylene as a hydrocarbon source at 1000 °C. The as-produced graphene sheets were purified in a single step by washing with a diluted hydrochloric acid solution under sonication. Next, they were thoroughly characterized by microscopy, spectroscopy, and X-Ray diffraction. Advanced transmission electron microscopy and atomic force microscopy analyses have indicated the formation of 3-5 layered graphene nanosheets. Thorough analyses by Raman spectroscopy were also performed demonstrating the presence of high quality and few-layer graphene samples. This low cost and highly reproducible method may be applied in a straightforward way to produce large quantities of graphene for various advanced applications.

scholarly journals Urban Air Quality Modeling Using Low-Cost Sensor Network and Data Assimilation in the Aburrá Valley, Colombia

Atmosphere ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 91
Author(s):  
Santiago Lopez-Restrepo ◽  
Andres Yarce ◽  
Nicolás Pinel ◽  
O.L. Quintero ◽  
Arjo Segers ◽  
...  
Keyword(s):  
Air Quality ◽  
Data Assimilation ◽  
Transport Model ◽  
Cost Model ◽  
Low Cost ◽  
Model Performance ◽  
Monitoring Network ◽  
Correlation Factor ◽  
Chemical Transport Model ◽  
High Quality

The use of low air quality networks has been increasing in recent years to study urban pollution dynamics. Here we show the evaluation of the operational Aburrá Valley’s low-cost network against the official monitoring network. The results show that the PM2.5 low-cost measurements are very close to those observed by the official network. Additionally, the low-cost allows a higher spatial representation of the concentrations across the valley. We integrate low-cost observations with the chemical transport model Long Term Ozone Simulation-European Operational Smog (LOTOS-EUROS) using data assimilation. Two different configurations of the low-cost network were assimilated: using the whole low-cost network (255 sensors), and a high-quality selection using just the sensors with a correlation factor greater than 0.8 with respect to the official network (115 sensors). The official stations were also assimilated to compare the more dense low-cost network’s impact on the model performance. Both simulations assimilating the low-cost model outperform the model without assimilation and assimilating the official network. The capability to issue warnings for pollution events is also improved by assimilating the low-cost network with respect to the other simulations. Finally, the simulation using the high-quality configuration has lower error values than using the complete low-cost network, showing that it is essential to consider the quality and location and not just the total number of sensors. Our results suggest that with the current advance in low-cost sensors, it is possible to improve model performance with low-cost network data assimilation.

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