Conversion of Biomass Wastes into Activated Carbons by Chemical Activation for Hydrogen Storage

Peng, Zifang; Xu, Ying; Luo, Weimin; Wang, Chenguang; Ma, Longlong

doi:10.1002/slct.202000877

Cited by 24 publications

(5 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[12][13][14][15] The activation of biomass using chemical activators is termed chemical activation. 16 It features the advantages of high AC yield, large specific surface area, and controllable porous structure. 17 For example, Zhang et al activated wheat bran with NaOH and were able to produce AC with a specific surface area as high as 2543 m 2 g −1 .…”

Section: Introductionmentioning

confidence: 99%

Activation of biomass with volatilized KOH

Shao

et al. 2023

Green Chem.

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Activation of biomass with volatilized KOH

Shao

et al. 2023

Green Chem.

View full text Add to dashboard Cite

show abstract

“…Typically, the D band at 1350 cm −1 is associated with structural defects of sp 3 hybridized carbon atoms and reflects the disordered graphite structure, whereas the G band at 1580 cm −1 is related to sp 2 carbon atoms and the 2D band represents the interlayer stacking order of carbon atoms in the sample [35,42]. The intensity ratio, R (I D /I G ), between the D and G bands reveals the relative degree of disorderedness in the carbon materials, and the lower the R-value, the higher the degree of graphitization of the carbon material [43]. The Raman spectra of ACNF-1 have the minimum R-value, as was also confirmed by the XRD analysis discussed above.…”

Section: Resultsmentioning

confidence: 99%

In Situ Ni-Doped Hierarchically Porous Carbon Nanofibers Derived from Polyacrylonitrile/Pitch for Hydrogen Storage at Ambient Temperature

et al. 2023

View full text Add to dashboard Cite

Porous carbon nanofibers doped with nickel (Ni) were successfully fabricated through electrospinning, carbonization, and CO2 activation techniques using polyacrylonitrile (PAN) and petroleum pitch as carbon sources and nickel acetate as the dopant. During the activation process, Ni was reduced and dispersed in situ on the carbon matrix. The effects of Ni doping content on the morphology and structure of the carbon nanofibers were systematically investigated using SEM, TEM, XPS, XRD, Raman, and BET analyses. The experimental results revealed that the prepared materials had a hierarchically porous structure and that Ni nanoparticles played multiple roles in the preparation process, including catalyzing pore expansion and catalytic graphitization. However, particle agglomeration and fiber fracture occurred when the Ni content was high. In the adsorption/desorption experiments, the sample with 10 wt% Ni doping exhibited the highest specific surface area and micropore volume of 750.7 m2/g and 0.258 cm3/g, respectively, and had the maximum hydrogen storage capacity of 1.39 wt% at 298 K and 10 MPa. The analyses suggested that the hydrogen adsorption mechanism contributed to enhanced H2 adsorption by the spillover effect in addition to physisorption.

show abstract

“…[ 27 ] As for hydrogen storage capacity, the micropores provide the channels for the diffusion of H 2 . [ 28 ]…”

Section: Resultsmentioning

confidence: 99%

Transforming Cotton Gin Trash to Engineered Functional Carbon Structures

Deshan

Moghaddam

Siriwardena

et al. 2021

Advanced Sustainable Systems

View full text Add to dashboard Cite

This paper investigates the carbonization of cotton gin trash (CGT) into carbon structures shaped under the influence of different operating conditions including the impact of endogenous fatty acids impurities present in CGT. As expected, both KOH activation and high carbonization temperature increase the material surface area and porosity. Furan and arene groups are formed from 400 °C to 800 °C but the proportion of the furan groups are highest at 600 °C. This is due to the conversion of the fatty acids in CGT to furan units. XRD data reveals the presence of three aromatic layers at 400 °C, followed by structural rearrangement to the formation of five stacks aromatic layers at 800 °C consisting mainly of protonated and non‐protonated condensed arene groups. Interestingly, a reduction in the number of aromatic structures is observed if no acid pretreatment of CGT to remove inorganic impurities is conducted prior to pyrolysis to 600 °C. Two potential applications of the synthesised carbons are shown; one for the formation of 5‐hydroxymethylfurfural (80%) from fructose, which compares favorably to other porous carbon materials produced under harsher conditions, and another derived CGT carbon material which shows a good uptake of hydrogen for storage.

show abstract

Conversion of Biomass Wastes into Activated Carbons by Chemical Activation for Hydrogen Storage

Cited by 24 publications

References 49 publications

Activation of biomass with volatilized KOH

Activation of biomass with volatilized KOH

In Situ Ni-Doped Hierarchically Porous Carbon Nanofibers Derived from Polyacrylonitrile/Pitch for Hydrogen Storage at Ambient Temperature

Transforming Cotton Gin Trash to Engineered Functional Carbon Structures

Contact Info

Product

Resources

About