On the adsorption affinity of graphene and white graphene sheets by dioxin‐like pollutants

2020 ◽  
Author(s):  
Raúl Alvarado ◽  
Nicolás Ramos‐Berdullas ◽  
Marcos Mandado
Keyword(s):  
Graphene Sheets ◽  
Adsorption Affinity ◽  
White Graphene

Extended ADI‐FDTD for anisotropic magnetised graphene sheets

2019 ◽  
Vol 55 (15) ◽  
pp. 833-835
Author(s):  
Jian‐Yun Gao ◽  
Xiang‐Hua Wang ◽  
Fernando L. Teixeira
Keyword(s):  
Graphene Sheets

Solvothermal-assisted assembly of MoS2 nanocages on graphene sheets to enhance the electrochemical performance of lithium-ion battery

Nano Research ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 1029-1034
Author(s):  
Dafang He ◽  
Yi Yang ◽  
Zhenmin Liu ◽  
Jin Shao ◽  
Jian Wu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Graphene Sheets

scholarly journals Development of a simplified gas ultracleaning process: experiments in biomass residue-based fixed-bed gasification syngas

2021 ◽  
Author(s):  
Christian Frilund ◽  
Esa Kurkela ◽  
Ilkka Hiltunen
Keyword(s):  
Activated Carbons ◽  
Low Cost ◽  
Fixed Bed ◽  
Carbonyl Sulfide ◽  
Gas Analysis ◽  
Small Scale ◽  
Cleaning Process ◽  
Medium Temperature ◽  
Gas Cleaning ◽  
Adsorption Affinity

AbstractFor the realization of small-scale biomass-to-liquid (BTL) processes, low-cost syngas cleaning remains a major obstacle, and for this reason a simplified gas ultracleaning process is being developed. In this study, a low- to medium-temperature final gas cleaning process based on adsorption and organic solvent-free scrubbing methods was coupled to a pilot-scale staged fixed-bed gasification facility including hot filtration and catalytic reforming steps for extended duration gas cleaning tests for the generation of ultraclean syngas. The final gas cleaning process purified syngas from woody and agricultural biomass origin to a degree suitable for catalytic synthesis. The gas contained up to 3000 ppm of ammonia, 1300 ppm of benzene, 200 ppm of hydrogen sulfide, 10 ppm of carbonyl sulfide, and 5 ppm of hydrogen cyanide. Post-run characterization displayed that the accumulation of impurities on the Cu-based deoxygenation catalyst (TOS 105 h) did not occur, demonstrating that effective main impurity removal was achieved in the first two steps: acidic water scrubbing (AWC) and adsorption by activated carbons (AR). In the final test campaign, a comprehensive multipoint gas analysis confirmed that ammonia was fully removed by the scrubbing step, and benzene and H2S were fully removed by the subsequent activated carbon beds. The activated carbons achieved > 90% removal of up to 100 ppm of COS and 5 ppm of HCN in the syngas. These results provide insights into the adsorption affinity of activated carbons in a complex impurity matrix, which would be arduous to replicate in laboratory conditions.

Reduced drift of CMOS ISFET pH sensors using graphene sheets

2021 ◽  
pp. 1-1
Author(s):  
Christoforos Panteli ◽  
Pantelis Georgiou ◽  
Kristel Fobelets
Keyword(s):  
Graphene Sheets ◽  
Ph Sensors

scholarly journals Mass production of metal-doped graphene from the agriculture waste of Quercus ilex leaves for supercapacitors: inclusive DFT study

RSC Advances ◽  
2021 ◽  
Vol 11 (18) ◽  
pp. 10891-10901
Author(s):  
Gaurav Tatrari ◽  
Chetna Tewari ◽  
Manoj Karakoti ◽  
Mayank Pathak ◽  
Ritu Jangra ◽  
...  
Keyword(s):  
Effective Mass ◽  
Mass Production ◽  
Quercus Ilex ◽  
Cost Effective ◽  
Mass Scale ◽  
Graphene Sheets ◽  
Agriculture Waste ◽  
Doped Graphene ◽  
Metal Doped ◽  
Supercapacitor Applications

This work reports a facile, eco-friendly, and cost-effective mass-scale synthesis of metal-doped graphene sheets (MDGs) using agriculture waste of Quercus ilex leaves for supercapacitor applications.

scholarly journals Defect-less, vertically aligned graphene sheets expanded fanwise on their horizontal structure by direct CO2-laser patterning

Carbon ◽  
2021 ◽  
Author(s):  
Seungyoung Park ◽  
Seul Gi Ji ◽  
Yeoheung Yoon ◽  
Seong K. Kim ◽  
Wooseok Song ◽  
...  
Keyword(s):  
Co2 Laser ◽  
Graphene Sheets ◽  
Horizontal Structure ◽  
Laser Patterning ◽  
Vertically Aligned
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